./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 91279e250c876c25b5b998426afc8f34c58f709c .................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 91279e250c876c25b5b998426afc8f34c58f709c ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:57:30,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:57:30,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:57:30,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:57:30,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:57:30,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:57:30,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:57:30,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:57:30,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:57:30,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:57:30,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:57:30,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:57:30,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:57:30,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:57:30,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:57:30,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:57:30,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:57:30,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:57:30,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:57:30,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:57:30,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:57:30,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:57:30,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:57:30,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:57:30,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:57:30,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:57:30,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:57:30,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:57:30,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:57:30,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:57:30,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:57:30,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:57:30,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:57:30,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:57:30,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:57:30,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:57:30,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:57:30,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:57:30,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:57:30,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:57:30,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:57:30,809 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:57:30,852 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:57:30,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:57:30,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:57:30,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:57:30,855 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:57:30,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:57:30,855 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:57:30,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:57:30,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:57:30,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:57:30,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:57:30,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:57:30,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:57:30,857 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:57:30,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:57:30,858 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:57:30,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:57:30,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:57:30,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:57:30,858 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:57:30,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:57:30,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:57:30,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:57:30,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:57:30,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:57:30,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:57:30,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:57:30,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:57:30,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:57:30,860 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91279e250c876c25b5b998426afc8f34c58f709c [2020-11-29 23:57:31,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:57:31,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:57:31,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:57:31,166 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:57:31,167 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:57:31,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2020-11-29 23:57:31,254 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/data/41435f900/de0b72e53efb436880f5d28f2684180a/FLAG99c5b23ed [2020-11-29 23:57:31,665 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:57:31,665 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2020-11-29 23:57:31,671 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/data/41435f900/de0b72e53efb436880f5d28f2684180a/FLAG99c5b23ed [2020-11-29 23:57:32,077 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/data/41435f900/de0b72e53efb436880f5d28f2684180a [2020-11-29 23:57:32,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:57:32,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:57:32,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:57:32,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:57:32,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:57:32,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:57:32" (1/1) ... [2020-11-29 23:57:32,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@540234d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:32, skipping insertion in model container [2020-11-29 23:57:32,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:57:32" (1/1) ... [2020-11-29 23:57:32,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:57:32,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:57:32,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:57:32,304 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:57:32,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:57:32,331 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:57:32,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:32 WrapperNode [2020-11-29 23:57:32,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:57:32,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:57:32,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:57:32,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:57:32,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:32" (1/1) ... [2020-11-29 23:57:32,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:32" (1/1) ... [2020-11-29 23:57:32,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:57:32,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:57:32,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:57:32,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:57:32,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:32" (1/1) ... [2020-11-29 23:57:32,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:32" (1/1) ... [2020-11-29 23:57:32,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:32" (1/1) ... [2020-11-29 23:57:32,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:32" (1/1) ... [2020-11-29 23:57:32,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:32" (1/1) ... [2020-11-29 23:57:32,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:32" (1/1) ... [2020-11-29 23:57:32,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:32" (1/1) ... [2020-11-29 23:57:32,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:57:32,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:57:32,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:57:32,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:57:32,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/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 [2020-11-29 23:57:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:57:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:57:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:57:32,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:57:32,636 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:57:32,636 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 23:57:32,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:57:32 BoogieIcfgContainer [2020-11-29 23:57:32,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:57:32,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:57:32,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:57:32,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:57:32,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:57:32" (1/3) ... [2020-11-29 23:57:32,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e09529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:57:32, skipping insertion in model container [2020-11-29 23:57:32,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:32" (2/3) ... [2020-11-29 23:57:32,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e09529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:57:32, skipping insertion in model container [2020-11-29 23:57:32,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:57:32" (3/3) ... [2020-11-29 23:57:32,659 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i [2020-11-29 23:57:32,670 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:57:32,688 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:57:32,713 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 23:57:32,735 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:57:32,735 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:57:32,735 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:57:32,735 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:57:32,735 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:57:32,736 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:57:32,736 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:57:32,736 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:57:32,748 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-29 23:57:32,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 23:57:32,752 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:32,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:32,777 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:32,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:32,783 INFO L82 PathProgramCache]: Analyzing trace with hash 239624332, now seen corresponding path program 1 times [2020-11-29 23:57:32,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:32,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482341474] [2020-11-29 23:57:32,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:57:32,958 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:57:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:57:32,993 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:57:33,024 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:57:33,025 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:57:33,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:57:33,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:57:33 BoogieIcfgContainer [2020-11-29 23:57:33,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:57:33,057 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:57:33,057 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:57:33,058 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:57:33,058 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:57:32" (3/4) ... [2020-11-29 23:57:33,062 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:57:33,062 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:57:33,065 INFO L168 Benchmark]: Toolchain (without parser) took 981.89 ms. Allocated memory is still 107.0 MB. Free memory was 73.1 MB in the beginning and 59.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:33,067 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 107.0 MB. Free memory was 78.6 MB in the beginning and 78.5 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:57:33,069 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.29 ms. Allocated memory is still 107.0 MB. Free memory was 72.8 MB in the beginning and 84.2 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:33,070 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.53 ms. Allocated memory is still 107.0 MB. Free memory was 84.2 MB in the beginning and 82.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:33,072 INFO L168 Benchmark]: Boogie Preprocessor took 18.65 ms. Allocated memory is still 107.0 MB. Free memory was 82.7 MB in the beginning and 81.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:57:33,072 INFO L168 Benchmark]: RCFGBuilder took 255.04 ms. Allocated memory is still 107.0 MB. Free memory was 81.4 MB in the beginning and 71.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:33,074 INFO L168 Benchmark]: TraceAbstraction took 414.64 ms. Allocated memory is still 107.0 MB. Free memory was 70.7 MB in the beginning and 59.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:33,075 INFO L168 Benchmark]: Witness Printer took 4.50 ms. Allocated memory is still 107.0 MB. Free memory is still 59.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:57:33,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 107.0 MB. Free memory was 78.6 MB in the beginning and 78.5 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 241.29 ms. Allocated memory is still 107.0 MB. Free memory was 72.8 MB in the beginning and 84.2 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.53 ms. Allocated memory is still 107.0 MB. Free memory was 84.2 MB in the beginning and 82.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.65 ms. Allocated memory is still 107.0 MB. Free memory was 82.7 MB in the beginning and 81.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 255.04 ms. Allocated memory is still 107.0 MB. Free memory was 81.4 MB in the beginning and 71.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 414.64 ms. Allocated memory is still 107.0 MB. Free memory was 70.7 MB in the beginning and 59.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.50 ms. Allocated memory is still 107.0 MB. Free memory is still 59.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 29, overapproximation of someBinaryArithmeticDOUBLEoperation at line 21. Possible FailurePath: [L20] double x = 1.0; [L21] double x1 = x/1.6; [L23] COND FALSE !(x1 != x) [L13] COND TRUE !(cond) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "Double_div_bad.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: 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 0.2.0-a4ecdab [2020-11-29 23:57:35,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:57:35,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:57:35,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:57:35,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:57:35,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:57:35,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:57:35,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:57:35,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:57:35,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:57:35,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:57:35,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:57:35,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:57:35,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:57:35,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:57:35,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:57:35,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:57:35,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:57:35,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:57:35,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:57:35,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:57:35,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:57:35,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:57:35,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:57:35,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:57:35,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:57:35,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:57:35,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:57:35,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:57:35,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:57:35,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:57:35,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:57:35,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:57:35,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:57:35,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:57:35,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:57:35,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:57:35,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:57:35,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:57:35,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:57:35,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:57:35,596 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 23:57:35,644 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:57:35,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:57:35,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:57:35,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:57:35,646 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:57:35,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:57:35,646 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:57:35,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:57:35,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:57:35,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:57:35,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:57:35,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:57:35,647 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 23:57:35,648 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 23:57:35,648 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:57:35,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:57:35,648 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:57:35,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:57:35,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:57:35,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:57:35,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:57:35,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:57:35,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:57:35,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:57:35,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:57:35,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:57:35,650 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 23:57:35,650 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 23:57:35,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:57:35,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:57:35,651 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 23:57:35,651 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91279e250c876c25b5b998426afc8f34c58f709c [2020-11-29 23:57:35,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:57:36,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:57:36,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:57:36,015 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:57:36,018 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:57:36,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2020-11-29 23:57:36,076 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/data/7c429719b/bf6f3606dd5d40bcbffb6c842dd0c1d4/FLAG99f955796 [2020-11-29 23:57:36,647 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:57:36,647 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2020-11-29 23:57:36,653 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/data/7c429719b/bf6f3606dd5d40bcbffb6c842dd0c1d4/FLAG99f955796 [2020-11-29 23:57:36,982 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/data/7c429719b/bf6f3606dd5d40bcbffb6c842dd0c1d4 [2020-11-29 23:57:36,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:57:36,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:57:36,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:57:36,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:57:37,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:57:37,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:57:36" (1/1) ... [2020-11-29 23:57:37,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3819115c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:37, skipping insertion in model container [2020-11-29 23:57:37,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:57:36" (1/1) ... [2020-11-29 23:57:37,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:57:37,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:57:37,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:57:37,185 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:57:37,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:57:37,216 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:57:37,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:37 WrapperNode [2020-11-29 23:57:37,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:57:37,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:57:37,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:57:37,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:57:37,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:37" (1/1) ... [2020-11-29 23:57:37,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:37" (1/1) ... [2020-11-29 23:57:37,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:57:37,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:57:37,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:57:37,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:57:37,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:37" (1/1) ... [2020-11-29 23:57:37,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:37" (1/1) ... [2020-11-29 23:57:37,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:37" (1/1) ... [2020-11-29 23:57:37,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:37" (1/1) ... [2020-11-29 23:57:37,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:37" (1/1) ... [2020-11-29 23:57:37,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:37" (1/1) ... [2020-11-29 23:57:37,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:37" (1/1) ... [2020-11-29 23:57:37,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:57:37,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:57:37,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:57:37,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:57:37,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/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 [2020-11-29 23:57:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 23:57:37,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:57:37,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:57:37,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:57:42,281 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:57:42,281 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 23:57:42,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:57:42 BoogieIcfgContainer [2020-11-29 23:57:42,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:57:42,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:57:42,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:57:42,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:57:42,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:57:36" (1/3) ... [2020-11-29 23:57:42,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4569c03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:57:42, skipping insertion in model container [2020-11-29 23:57:42,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:37" (2/3) ... [2020-11-29 23:57:42,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4569c03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:57:42, skipping insertion in model container [2020-11-29 23:57:42,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:57:42" (3/3) ... [2020-11-29 23:57:42,291 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i [2020-11-29 23:57:42,301 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:57:42,305 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:57:42,317 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 23:57:42,340 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:57:42,340 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:57:42,341 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:57:42,341 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:57:42,341 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:57:42,341 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:57:42,342 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:57:42,342 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:57:42,353 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-29 23:57:42,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 23:57:42,358 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:42,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:42,359 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:42,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:42,365 INFO L82 PathProgramCache]: Analyzing trace with hash 239624332, now seen corresponding path program 1 times [2020-11-29 23:57:42,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:57:42,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943375064] [2020-11-29 23:57:42,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/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 [2020-11-29 23:57:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:43,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:57:43,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:57:47,942 WARN L193 SmtUtils]: Spent 3.98 s on a formula simplification that was a NOOP. DAG size: 11 [2020-11-29 23:57:47,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:57:47,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:57:51,998 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.eq (fp.div c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) .cse0))) is different from true [2020-11-29 23:57:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:57:52,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943375064] [2020-11-29 23:57:52,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:57:52,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-29 23:57:52,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966485805] [2020-11-29 23:57:52,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:57:52,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:57:52,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:57:52,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2020-11-29 23:57:52,021 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 6 states. [2020-11-29 23:57:59,797 WARN L193 SmtUtils]: Spent 4.93 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 23:58:06,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:06,450 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2020-11-29 23:58:06,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:58:06,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-11-29 23:58:06,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:06,460 INFO L225 Difference]: With dead ends: 26 [2020-11-29 23:58:06,460 INFO L226 Difference]: Without dead ends: 11 [2020-11-29 23:58:06,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=20, Invalid=24, Unknown=2, NotChecked=10, Total=56 [2020-11-29 23:58:06,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-29 23:58:06,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 23:58:06,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 23:58:06,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-29 23:58:06,493 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2020-11-29 23:58:06,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:06,494 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-29 23:58:06,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:58:06,494 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-29 23:58:06,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 23:58:06,495 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:06,495 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:06,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 23:58:06,697 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:06,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:06,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1976138452, now seen corresponding path program 1 times [2020-11-29 23:58:06,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:58:06,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116622695] [2020-11-29 23:58:06,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/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 [2020-11-29 23:58:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:09,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 23:58:09,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:14,100 WARN L193 SmtUtils]: Spent 3.87 s on a formula simplification that was a NOOP. DAG size: 11 [2020-11-29 23:58:16,954 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)))) is different from true [2020-11-29 23:58:21,100 WARN L193 SmtUtils]: Spent 2.89 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 23:58:21,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2020-11-29 23:58:21,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:58:25,803 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~x1~0)) is different from false [2020-11-29 23:58:29,178 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-11-29 23:58:31,701 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-11-29 23:58:34,438 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-11-29 23:58:37,212 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-11-29 23:58:37,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2020-11-29 23:58:37,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116622695] [2020-11-29 23:58:37,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:58:37,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-11-29 23:58:37,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638841037] [2020-11-29 23:58:37,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 23:58:37,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:58:37,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 23:58:37,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=20, Unknown=7, NotChecked=44, Total=90 [2020-11-29 23:58:37,217 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2020-11-29 23:58:40,032 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2020-11-29 23:58:42,826 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (not (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)))) is different from false [2020-11-29 23:58:45,390 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (not (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)))) is different from true [2020-11-29 23:58:48,176 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) c_ULTIMATE.start_main_~x1~0)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)))) is different from false [2020-11-29 23:58:50,436 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) c_ULTIMATE.start_main_~x1~0)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)))) is different from true [2020-11-29 23:59:02,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:59:02,524 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-11-29 23:59:02,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:59:02,525 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2020-11-29 23:59:02,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:59:02,526 INFO L225 Difference]: With dead ends: 19 [2020-11-29 23:59:02,526 INFO L226 Difference]: Without dead ends: 13 [2020-11-29 23:59:02,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 40.9s TimeCoverageRelationStatistics Valid=25, Invalid=21, Unknown=12, NotChecked=98, Total=156 [2020-11-29 23:59:02,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-29 23:59:02,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-29 23:59:02,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-29 23:59:02,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-29 23:59:02,530 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2020-11-29 23:59:02,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:59:02,531 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-29 23:59:02,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 23:59:02,531 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-29 23:59:02,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:59:02,531 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:59:02,532 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:59:02,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 23:59:02,732 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:59:02,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:02,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1020395060, now seen corresponding path program 2 times [2020-11-29 23:59:02,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:59:02,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968916320] [2020-11-29 23:59:02,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/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 [2020-11-29 23:59:06,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 23:59:06,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:59:06,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 23:59:06,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:59:09,445 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))))) is different from true [2020-11-29 23:59:12,252 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)))) is different from true [2020-11-29 23:59:14,500 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)))) is different from true [2020-11-29 23:59:17,510 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)) c_ULTIMATE.start_main_~x1~0)) is different from true [2020-11-29 23:59:20,410 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~x~0) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) c_ULTIMATE.start_main_~x1~0))) is different from true [2020-11-29 23:59:20,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2020-11-29 23:59:20,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:59:22,775 WARN L838 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from false [2020-11-29 23:59:25,030 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from true [2020-11-29 23:59:27,536 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2020-11-29 23:59:30,031 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2020-11-29 23:59:32,833 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2020-11-29 23:59:35,631 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-11-29 23:59:39,169 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2020-11-29 23:59:42,797 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2020-11-29 23:59:46,547 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2020-11-29 23:59:50,299 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-11-29 23:59:50,300 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2020-11-29 23:59:50,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968916320] [2020-11-29 23:59:50,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:59:50,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2020-11-29 23:59:50,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050391336] [2020-11-29 23:59:50,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 23:59:50,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:59:50,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 23:59:50,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=25, Unknown=15, NotChecked=170, Total=240 [2020-11-29 23:59:50,304 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 16 states. [2020-11-29 23:59:53,725 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) is different from true [2020-11-29 23:59:57,073 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)))) is different from true [2020-11-30 00:00:00,933 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1)))) is different from false [2020-11-30 00:00:03,837 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1)))) is different from true [2020-11-30 00:00:06,404 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1)))) is different from true [2020-11-30 00:00:10,552 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~x1~0) (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-11-30 00:00:41,221 WARN L193 SmtUtils]: Spent 29.02 s on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2020-11-30 00:00:44,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:44,016 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-11-30 00:00:44,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:00:44,017 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 12 [2020-11-30 00:00:44,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:44,018 INFO L225 Difference]: With dead ends: 20 [2020-11-30 00:00:44,018 INFO L226 Difference]: Without dead ends: 14 [2020-11-30 00:00:44,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 15 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 94.2s TimeCoverageRelationStatistics Valid=44, Invalid=37, Unknown=21, NotChecked=360, Total=462 [2020-11-30 00:00:44,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-30 00:00:44,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-30 00:00:44,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-30 00:00:44,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-11-30 00:00:44,024 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-11-30 00:00:44,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:44,024 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-11-30 00:00:44,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-30 00:00:44,024 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-11-30 00:00:44,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:00:44,025 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:44,025 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:00:44,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 00:00:44,236 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:44,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:44,237 INFO L82 PathProgramCache]: Analyzing trace with hash 32921713, now seen corresponding path program 3 times [2020-11-30 00:00:44,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:00:44,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472401100] [2020-11-30 00:00:44,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/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 [2020-11-30 00:00:52,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-30 00:00:52,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:00:52,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 00:00:52,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:00:56,365 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))))) is different from true [2020-11-30 00:00:59,415 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)))) is different from true [2020-11-30 00:01:02,183 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)))) is different from true [2020-11-30 00:01:05,380 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)) c_ULTIMATE.start_main_~x1~0)) is different from true [2020-11-30 00:01:07,844 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-30 00:01:07,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472401100] [2020-11-30 00:01:07,845 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2020-11-30 00:01:07,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1912167332] [2020-11-30 00:01:07,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 00:01:23,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-30 00:01:23,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:01:23,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 00:01:23,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:01:23,725 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@45ee847f [2020-11-30 00:01:23,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960477852] [2020-11-30 00:01:23,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2497168-32ee-4919-9c70-2dbbb5f1bd89/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:09:13,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-30 00:09:13,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:09:15,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-30 00:09:15,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:09:15,163 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@45ee847f [2020-11-30 00:09:15,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:09:15,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-11-30 00:09:15,164 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-11-30 00:09:15,164 INFO L523 BasicCegarLoop]: Counterexample might be feasible [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process [2020-11-30 00:09:15,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3,6 cvc4 --incremental --print-success --lang smt --rewrite-divk,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:09:15,836 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-30 00:09:15,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:09:15 BoogieIcfgContainer [2020-11-30 00:09:15,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:09:15,840 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:09:15,841 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:09:15,841 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:09:15,842 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:57:42" (3/4) ... [2020-11-30 00:09:15,845 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:09:15,846 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:09:15,850 INFO L168 Benchmark]: Toolchain (without parser) took 698861.26 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 53.2 MB in the beginning and 58.3 MB in the end (delta: -5.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:09:15,851 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 71.3 MB. Free memory is still 52.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:09:15,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.91 ms. Allocated memory is still 71.3 MB. Free memory was 53.0 MB in the beginning and 43.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:09:15,864 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.05 ms. Allocated memory is still 71.3 MB. Free memory was 43.1 MB in the beginning and 53.4 MB in the end (delta: -10.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:09:15,869 INFO L168 Benchmark]: Boogie Preprocessor took 51.55 ms. Allocated memory is still 71.3 MB. Free memory was 53.4 MB in the beginning and 52.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:09:15,870 INFO L168 Benchmark]: RCFGBuilder took 4926.80 ms. Allocated memory is still 71.3 MB. Free memory was 52.3 MB in the beginning and 41.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:09:15,871 INFO L168 Benchmark]: TraceAbstraction took 693553.58 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 40.9 MB in the beginning and 59.0 MB in the end (delta: -18.0 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:09:15,871 INFO L168 Benchmark]: Witness Printer took 6.11 ms. Allocated memory is still 90.2 MB. Free memory was 59.0 MB in the beginning and 58.3 MB in the end (delta: 645.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:09:15,881 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 71.3 MB. Free memory is still 52.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 229.91 ms. Allocated memory is still 71.3 MB. Free memory was 53.0 MB in the beginning and 43.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.05 ms. Allocated memory is still 71.3 MB. Free memory was 43.1 MB in the beginning and 53.4 MB in the end (delta: -10.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.55 ms. Allocated memory is still 71.3 MB. Free memory was 53.4 MB in the beginning and 52.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 4926.80 ms. Allocated memory is still 71.3 MB. Free memory was 52.3 MB in the beginning and 41.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 693553.58 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 40.9 MB in the beginning and 59.0 MB in the end (delta: -18.0 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * Witness Printer took 6.11 ms. Allocated memory is still 90.2 MB. Free memory was 59.0 MB in the beginning and 58.3 MB in the end (delta: 645.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] double x = 1.0; [L21] double x1 = x/1.6; [L23] COND TRUE x1 != x [L25] x = x1 [L26] x1 = x/1.6 [L23] COND TRUE x1 != x [L25] x = x1 [L26] x1 = x/1.6 [L23] COND TRUE x1 != x [L25] x = x1 [L26] x1 = x/1.6 [L23] COND TRUE x1 != x [L25] x = x1 [L26] x1 = x/1.6 [L23] COND TRUE x1 != x [L25] x = x1 [L26] x1 = x/1.6 [L23] COND FALSE !(x1 != x) [L13] COND TRUE !(cond) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "Double_div_bad.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 693.4s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 93.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 12 SDslu, 51 SDs, 0 SdLazy, 22 SolverSat, 4 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 15.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 23 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 154.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 7.2s SatisfiabilityAnalysisTime, 80.3s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 5747 SizeOfPredicates, 13 NumberOfNonLiveVariables, 99 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/26 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...