./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD --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 aa004690edfde808b1aefac96308d2a9e2df62056aeddc89c51bd2015ab29125 ......................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD --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 aa004690edfde808b1aefac96308d2a9e2df62056aeddc89c51bd2015ab29125 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:05:12,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:05:12,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:05:12,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:05:12,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:05:12,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:05:12,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:05:12,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:05:12,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:05:12,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:05:12,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:05:12,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:05:12,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:05:12,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:05:12,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:05:12,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:05:12,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:05:12,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:05:12,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:05:12,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:05:12,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:05:12,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:05:12,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:05:12,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:05:12,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:05:12,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:05:12,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:05:12,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:05:12,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:05:12,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:05:12,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:05:12,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:05:12,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:05:12,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:05:12,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:05:12,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:05:12,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:05:12,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:05:12,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:05:12,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:05:12,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:05:12,328 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:05:12,390 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:05:12,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:05:12,392 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:05:12,392 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:05:12,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:05:12,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:05:12,403 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:05:12,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:05:12,404 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:05:12,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:05:12,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:05:12,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:05:12,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:05:12,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:05:12,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:05:12,408 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:05:12,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:05:12,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:05:12,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:05:12,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:05:12,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:05:12,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:05:12,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:05:12,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:05:12,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:05:12,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:05:12,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:05:12,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:05:12,413 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:05:12,413 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:05:12,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:05:12,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:05:12,414 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_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa004690edfde808b1aefac96308d2a9e2df62056aeddc89c51bd2015ab29125 [2021-10-28 23:05:12,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:05:12,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:05:12,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:05:12,766 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:05:12,767 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:05:12,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2021-10-28 23:05:12,868 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/data/4632efdbe/99b68b13e3a1425198565fe1128e6903/FLAGa0e4f0da6 [2021-10-28 23:05:13,395 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:05:13,396 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2021-10-28 23:05:13,404 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/data/4632efdbe/99b68b13e3a1425198565fe1128e6903/FLAGa0e4f0da6 [2021-10-28 23:05:13,764 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/data/4632efdbe/99b68b13e3a1425198565fe1128e6903 [2021-10-28 23:05:13,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:05:13,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:05:13,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:05:13,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:05:13,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:05:13,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:05:13" (1/1) ... [2021-10-28 23:05:13,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ac496e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:13, skipping insertion in model container [2021-10-28 23:05:13,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:05:13" (1/1) ... [2021-10-28 23:05:13,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:05:13,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:05:14,026 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i[808,821] [2021-10-28 23:05:14,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:05:14,061 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:05:14,076 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i[808,821] [2021-10-28 23:05:14,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:05:14,096 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:05:14,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14 WrapperNode [2021-10-28 23:05:14,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:05:14,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:05:14,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:05:14,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:05:14,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:05:14,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:05:14,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:05:14,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:05:14,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:05:14,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:05:14,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:05:14,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:05:14,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,181 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:05:14,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:14,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:14,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:05:14,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:05:14,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:05:14,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:05:14,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:05:14,527 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:05:14,527 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 23:05:14,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:05:14 BoogieIcfgContainer [2021-10-28 23:05:14,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:05:14,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:05:14,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:05:14,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:05:14,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:05:13" (1/3) ... [2021-10-28 23:05:14,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df93e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:05:14, skipping insertion in model container [2021-10-28 23:05:14,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (2/3) ... [2021-10-28 23:05:14,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df93e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:05:14, skipping insertion in model container [2021-10-28 23:05:14,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:05:14" (3/3) ... [2021-10-28 23:05:14,542 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i [2021-10-28 23:05:14,549 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:05:14,549 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:05:14,606 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:05:14,615 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:05:14,615 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:05:14,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:14,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 23:05:14,640 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:14,641 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:05:14,642 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:05:14,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:14,650 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-10-28 23:05:14,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:14,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694576609] [2021-10-28 23:05:14,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:14,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:14,802 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:14,850 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:14,853 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:05:14,855 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:05:14,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:05:14,863 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-28 23:05:14,867 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:05:14,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:05:14 BoogieIcfgContainer [2021-10-28 23:05:14,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:05:14,903 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:05:14,903 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:05:14,904 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:05:14,904 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:05:14" (3/4) ... [2021-10-28 23:05:14,909 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:05:14,910 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:05:14,914 INFO L168 Benchmark]: Toolchain (without parser) took 1142.32 ms. Allocated memory is still 98.6 MB. Free memory was 68.5 MB in the beginning and 51.6 MB in the end (delta: 16.9 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:05:14,916 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 98.6 MB. Free memory was 52.7 MB in the beginning and 52.7 MB in the end (delta: 42.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:05:14,918 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.63 ms. Allocated memory is still 98.6 MB. Free memory was 68.3 MB in the beginning and 75.9 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:05:14,919 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.55 ms. Allocated memory is still 98.6 MB. Free memory was 75.9 MB in the beginning and 74.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:05:14,921 INFO L168 Benchmark]: Boogie Preprocessor took 26.84 ms. Allocated memory is still 98.6 MB. Free memory was 74.6 MB in the beginning and 73.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:05:14,922 INFO L168 Benchmark]: RCFGBuilder took 361.04 ms. Allocated memory is still 98.6 MB. Free memory was 73.4 MB in the beginning and 65.1 MB in the end (delta: 8.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:05:14,924 INFO L168 Benchmark]: TraceAbstraction took 366.25 ms. Allocated memory is still 98.6 MB. Free memory was 64.6 MB in the beginning and 52.1 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:05:14,933 INFO L168 Benchmark]: Witness Printer took 6.74 ms. Allocated memory is still 98.6 MB. Free memory was 52.1 MB in the beginning and 51.6 MB in the end (delta: 472.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:05:14,941 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 98.6 MB. Free memory was 52.7 MB in the beginning and 52.7 MB in the end (delta: 42.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.63 ms. Allocated memory is still 98.6 MB. Free memory was 68.3 MB in the beginning and 75.9 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.55 ms. Allocated memory is still 98.6 MB. Free memory was 75.9 MB in the beginning and 74.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.84 ms. Allocated memory is still 98.6 MB. Free memory was 74.6 MB in the beginning and 73.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 361.04 ms. Allocated memory is still 98.6 MB. Free memory was 73.4 MB in the beginning and 65.1 MB in the end (delta: 8.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 366.25 ms. Allocated memory is still 98.6 MB. Free memory was 64.6 MB in the beginning and 52.1 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.74 ms. Allocated memory is still 98.6 MB. Free memory was 52.1 MB in the beginning and 51.6 MB in the end (delta: 472.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is 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) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 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, 6 NumberOfCodeBlocks, 6 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 [2021-10-28 23:05:15,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:05:18,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:05:18,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:05:18,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:05:18,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:05:18,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:05:18,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:05:18,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:05:18,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:05:18,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:05:18,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:05:18,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:05:18,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:05:18,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:05:18,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:05:18,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:05:18,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:05:18,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:05:18,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:05:18,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:05:18,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:05:18,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:05:18,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:05:18,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:05:18,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:05:18,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:05:18,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:05:18,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:05:18,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:05:18,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:05:18,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:05:18,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:05:18,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:05:18,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:05:18,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:05:18,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:05:18,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:05:18,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:05:18,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:05:18,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:05:18,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:05:18,314 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 23:05:18,376 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:05:18,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:05:18,378 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:05:18,379 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:05:18,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:05:18,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:05:18,382 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:05:18,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:05:18,383 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:05:18,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:05:18,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:05:18,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:05:18,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:05:18,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:05:18,386 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:05:18,386 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:05:18,387 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:05:18,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:05:18,387 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:05:18,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:05:18,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:05:18,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:05:18,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:05:18,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:05:18,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:05:18,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:05:18,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:05:18,390 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:05:18,390 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:05:18,391 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:05:18,391 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:05:18,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:05:18,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:05:18,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:05:18,392 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_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa004690edfde808b1aefac96308d2a9e2df62056aeddc89c51bd2015ab29125 [2021-10-28 23:05:18,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:05:18,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:05:18,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:05:18,970 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:05:18,971 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:05:18,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2021-10-28 23:05:19,055 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/data/b2977c811/3f1170ec88014b2ba7a89f2dd928fc65/FLAG58cc881f3 [2021-10-28 23:05:19,621 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:05:19,622 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2021-10-28 23:05:19,630 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/data/b2977c811/3f1170ec88014b2ba7a89f2dd928fc65/FLAG58cc881f3 [2021-10-28 23:05:20,000 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/data/b2977c811/3f1170ec88014b2ba7a89f2dd928fc65 [2021-10-28 23:05:20,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:05:20,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:05:20,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:05:20,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:05:20,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:05:20,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:05:20" (1/1) ... [2021-10-28 23:05:20,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62606d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:20, skipping insertion in model container [2021-10-28 23:05:20,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:05:20" (1/1) ... [2021-10-28 23:05:20,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:05:20,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:05:20,292 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i[808,821] [2021-10-28 23:05:20,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:05:20,323 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:05:20,340 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i[808,821] [2021-10-28 23:05:20,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:05:20,396 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:05:20,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:20 WrapperNode [2021-10-28 23:05:20,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:05:20,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:05:20,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:05:20,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:05:20,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:20" (1/1) ... [2021-10-28 23:05:20,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:20" (1/1) ... [2021-10-28 23:05:20,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:05:20,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:05:20,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:05:20,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:05:20,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:20" (1/1) ... [2021-10-28 23:05:20,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:20" (1/1) ... [2021-10-28 23:05:20,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:20" (1/1) ... [2021-10-28 23:05:20,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:20" (1/1) ... [2021-10-28 23:05:20,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:20" (1/1) ... [2021-10-28 23:05:20,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:20" (1/1) ... [2021-10-28 23:05:20,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:20" (1/1) ... [2021-10-28 23:05:20,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:05:20,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:05:20,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:05:20,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:05:20,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:20" (1/1) ... [2021-10-28 23:05:20,526 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:05:20,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:20,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:20,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:05:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:05:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:05:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:05:20,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:05:25,285 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:05:25,285 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 23:05:25,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:05:25 BoogieIcfgContainer [2021-10-28 23:05:25,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:05:25,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:05:25,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:05:25,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:05:25,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:05:20" (1/3) ... [2021-10-28 23:05:25,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24eb6c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:05:25, skipping insertion in model container [2021-10-28 23:05:25,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:20" (2/3) ... [2021-10-28 23:05:25,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24eb6c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:05:25, skipping insertion in model container [2021-10-28 23:05:25,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:05:25" (3/3) ... [2021-10-28 23:05:25,300 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i [2021-10-28 23:05:25,307 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:05:25,308 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:05:25,381 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:05:25,389 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:05:25,390 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:05:25,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:25,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 23:05:25,414 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:25,415 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:05:25,416 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:05:25,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:25,424 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-10-28 23:05:25,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:05:25,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200890944] [2021-10-28 23:05:25,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:25,442 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:05:25,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:05:25,450 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:05:25,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:05:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:26,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:05:26,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:32,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:05:41,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:41,646 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:05:41,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200890944] [2021-10-28 23:05:41,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200890944] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:41,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:41,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 23:05:41,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325581478] [2021-10-28 23:05:41,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:05:41,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:05:41,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:05:41,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:05:41,675 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:46,120 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) c_ULTIMATE.start_main_~x1~0) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-28 23:05:52,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:52,841 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2021-10-28 23:05:52,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:05:52,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-28 23:05:52,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:52,854 INFO L225 Difference]: With dead ends: 20 [2021-10-28 23:05:52,855 INFO L226 Difference]: Without dead ends: 8 [2021-10-28 23:05:52,858 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2021-10-28 23:05:52,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-28 23:05:52,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-28 23:05:52,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:52,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-28 23:05:52,893 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-10-28 23:05:52,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:52,894 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-28 23:05:52,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:52,895 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-28 23:05:52,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:05:52,896 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:52,896 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:52,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:53,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:05:53,106 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:05:53,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:53,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2021-10-28 23:05:53,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:05:53,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574278398] [2021-10-28 23:05:53,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:53,110 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:05:53,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:05:53,111 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:05:53,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:05:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:55,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:05:55,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:06:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:06:10,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:06:18,034 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 [2021-10-28 23:06:20,214 WARN L860 $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 true [2021-10-28 23:06:27,132 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 ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-10-28 23:06:29,450 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 ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-10-28 23:06:29,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-28 23:06:29,451 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:06:29,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574278398] [2021-10-28 23:06:29,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574278398] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 23:06:29,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:06:29,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-28 23:06:29,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433474681] [2021-10-28 23:06:29,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:06:29,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:06:29,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:06:29,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=18, Unknown=5, NotChecked=18, Total=56 [2021-10-28 23:06:29,456 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:06:31,792 WARN L860 $PredicateComparison]: unable to prove that (and (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-28 23:06:33,959 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_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-28 23:06:42,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:06:42,259 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-10-28 23:06:42,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:06:42,261 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-28 23:06:42,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:06:42,262 INFO L225 Difference]: With dead ends: 14 [2021-10-28 23:06:42,262 INFO L226 Difference]: Without dead ends: 10 [2021-10-28 23:06:42,263 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=19, Invalid=20, Unknown=7, NotChecked=44, Total=90 [2021-10-28 23:06:42,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-28 23:06:42,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-28 23:06:42,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:06:42,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-28 23:06:42,269 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2021-10-28 23:06:42,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:06:42,270 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-28 23:06:42,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:06:42,270 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-28 23:06:42,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 23:06:42,271 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:06:42,272 INFO L513 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2021-10-28 23:06:42,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-28 23:06:42,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:06:42,479 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:06:42,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:06:42,480 INFO L85 PathProgramCache]: Analyzing trace with hash 492108272, now seen corresponding path program 2 times [2021-10-28 23:06:42,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:06:42,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282686896] [2021-10-28 23:06:42,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:06:42,481 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:06:42,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:06:42,485 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:06:42,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:06:46,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:06:46,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:06:46,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 23:06:46,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:06:59,056 WARN L207 SmtUtils]: Spent 5.39 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-28 23:07:02,447 WARN L860 $PredicateComparison]: unable to prove that (and (= 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))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-28 23:07:08,790 WARN L207 SmtUtils]: Spent 6.33 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-28 23:07:11,184 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 ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) c_ULTIMATE.start_main_~x1~0)) is different from true [2021-10-28 23:07:21,292 WARN L207 SmtUtils]: Spent 6.82 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-28 23:07:24,548 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~x~0) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-28 23:07:28,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-10-28 23:07:28,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:07:39,217 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 [2021-10-28 23:07:41,374 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 [2021-10-28 23:07:46,411 WARN L207 SmtUtils]: Spent 5.03 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 23:07:51,688 WARN L207 SmtUtils]: Spent 5.28 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 23:07:53,975 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 (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 [2021-10-28 23:07:56,301 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 (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 [2021-10-28 23:08:01,948 WARN L207 SmtUtils]: Spent 5.64 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-28 23:08:08,043 WARN L207 SmtUtils]: Spent 6.09 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-28 23:08:10,517 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 [2021-10-28 23:08:12,978 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 [2021-10-28 23:08:19,673 WARN L207 SmtUtils]: Spent 6.68 s on a formula simplification that was a NOOP. DAG size: 11 [2021-10-28 23:08:25,912 WARN L207 SmtUtils]: Spent 6.24 s on a formula simplification that was a NOOP. DAG size: 11 [2021-10-28 23:08:28,546 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 ((_ to_fp 11 53) c_currentRoundingMode 1.0) .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 [2021-10-28 23:08:31,159 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 ((_ to_fp 11 53) c_currentRoundingMode 1.0) .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 [2021-10-28 23:08:31,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-10-28 23:08:31,159 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:08:31,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282686896] [2021-10-28 23:08:31,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282686896] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 23:08:31,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:08:31,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2021-10-28 23:08:31,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435441341] [2021-10-28 23:08:31,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 23:08:31,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:08:31,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:08:31,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=32, Unknown=11, NotChecked=112, Total=182 [2021-10-28 23:08:31,163 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:33,828 WARN L860 $PredicateComparison]: unable to prove that (and (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 ((_ to_fp 11 53) c_currentRoundingMode 1.0) .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_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-28 23:08:36,491 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_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-28 23:08:38,798 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 c_ULTIMATE.start_main_~x1~0 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-28 23:08:41,459 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (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)))) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~x1~0))) is different from false [2021-10-28 23:08:43,608 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (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)))) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~x1~0))) is different from true [2021-10-28 23:08:46,947 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~x~0) (or (not (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0)) (fp.eq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-28 23:08:53,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:53,249 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-10-28 23:08:53,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:08:53,250 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-28 23:08:53,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:53,251 INFO L225 Difference]: With dead ends: 15 [2021-10-28 23:08:53,251 INFO L226 Difference]: Without dead ends: 11 [2021-10-28 23:08:53,253 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 49.5s TimeCoverageRelationStatistics Valid=37, Invalid=36, Unknown=17, NotChecked=252, Total=342 [2021-10-28 23:08:53,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-28 23:08:53,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-28 23:08:53,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-28 23:08:53,256 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2021-10-28 23:08:53,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:53,257 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-28 23:08:53,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:08:53,257 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-28 23:08:53,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:08:53,258 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:53,259 INFO L513 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:53,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:08:53,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:08:53,461 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:08:53,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:53,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1922847381, now seen corresponding path program 3 times [2021-10-28 23:08:53,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:08:53,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220480395] [2021-10-28 23:08:53,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:08:53,462 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:08:53,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:08:53,475 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:08:53,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 23:08:58,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 23:08:58,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:08:58,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 23:08:58,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:09:08,841 WARN L207 SmtUtils]: Spent 5.57 s on a formula simplification that was a NOOP. DAG size: 11 [2021-10-28 23:09:14,345 WARN L207 SmtUtils]: Spent 5.45 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-28 23:09:17,080 WARN L860 $PredicateComparison]: unable to prove that (and (= 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))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-28 23:09:23,240 WARN L207 SmtUtils]: Spent 6.14 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-28 23:09:25,813 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 ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) c_ULTIMATE.start_main_~x1~0)) is different from true [2021-10-28 23:09:32,775 WARN L207 SmtUtils]: Spent 6.94 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-28 23:09:35,649 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 [2021-10-28 23:09:43,296 WARN L207 SmtUtils]: Spent 7.59 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-28 23:09:51,361 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x~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)))) is different from false [2021-10-28 23:09:51,501 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2021-10-28 23:09:51,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:10:01,475 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 [2021-10-28 23:10:03,628 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 [2021-10-28 23:10:14,035 WARN L207 SmtUtils]: Spent 5.42 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 23:10:16,350 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 (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 [2021-10-28 23:10:18,653 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 (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 [2021-10-28 23:10:24,355 WARN L207 SmtUtils]: Spent 5.70 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-28 23:10:30,457 WARN L207 SmtUtils]: Spent 6.10 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-28 23:10:33,001 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 [2021-10-28 23:10:35,445 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 [2021-10-28 23:10:41,705 WARN L207 SmtUtils]: Spent 6.24 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 23:10:43,725 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:10:43,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220480395] [2021-10-28 23:10:43,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: line 9373 column 7: push canceled [2021-10-28 23:10:43,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1100235725] [2021-10-28 23:10:43,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:10:43,729 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-28 23:10:43,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/cvc4 [2021-10-28 23:10:43,733 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-28 23:10:43,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-28 23:10:51,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 23:10:51,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:10:51,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 23:10:51,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:51,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Function currentRoundingMode is already defined. [2021-10-28 23:10:51,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092884631] [2021-10-28 23:10:51,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:10:51,793 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:51,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:51,806 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:51,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 23:14:35,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 23:14:35,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:14:36,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 23:14:36,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:14:36,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Function currentRoundingMode is already defined. [2021-10-28 23:14:36,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:14:36,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-28 23:14:36,212 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-28 23:14:36,213 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-28 23:14:36,220 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:14:36,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:36,635 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process [2021-10-28 23:14:36,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:36,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:36,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt [2021-10-28 23:14:36,880 INFO L731 BasicCegarLoop]: Path program histogram: [3, 1] [2021-10-28 23:14:36,882 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:14:36,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:14:36 BoogieIcfgContainer [2021-10-28 23:14:36,894 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:14:36,895 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:14:36,895 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:14:36,895 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:14:36,896 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:05:25" (3/4) ... [2021-10-28 23:14:36,899 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:14:36,900 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:14:36,901 INFO L168 Benchmark]: Toolchain (without parser) took 556893.03 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 36.5 MB in the beginning and 42.5 MB in the end (delta: -6.0 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:14:36,902 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 58.7 MB. Free memory is still 38.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:14:36,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.33 ms. Allocated memory is still 58.7 MB. Free memory was 36.2 MB in the beginning and 42.1 MB in the end (delta: -5.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:14:36,903 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.55 ms. Allocated memory is still 58.7 MB. Free memory was 42.1 MB in the beginning and 40.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:14:36,904 INFO L168 Benchmark]: Boogie Preprocessor took 45.24 ms. Allocated memory is still 58.7 MB. Free memory was 40.7 MB in the beginning and 39.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:14:36,905 INFO L168 Benchmark]: RCFGBuilder took 4773.45 ms. Allocated memory is still 58.7 MB. Free memory was 39.4 MB in the beginning and 30.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:14:36,906 INFO L168 Benchmark]: TraceAbstraction took 551603.54 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 30.1 MB in the beginning and 42.8 MB in the end (delta: -12.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:14:36,906 INFO L168 Benchmark]: Witness Printer took 4.98 ms. Allocated memory is still 71.3 MB. Free memory was 42.8 MB in the beginning and 42.5 MB in the end (delta: 384.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:14:36,910 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 58.7 MB. Free memory is still 38.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 385.33 ms. Allocated memory is still 58.7 MB. Free memory was 36.2 MB in the beginning and 42.1 MB in the end (delta: -5.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.55 ms. Allocated memory is still 58.7 MB. Free memory was 42.1 MB in the beginning and 40.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.24 ms. Allocated memory is still 58.7 MB. Free memory was 40.7 MB in the beginning and 39.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 4773.45 ms. Allocated memory is still 58.7 MB. Free memory was 39.4 MB in the beginning and 30.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 551603.54 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 30.1 MB in the beginning and 42.8 MB in the end (delta: -12.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.98 ms. Allocated memory is still 71.3 MB. Free memory was 42.8 MB in the beginning and 42.5 MB in the end (delta: 384.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is 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 FALSE !(x1 != x) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 551.5s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 46.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 1 SDslu, 33 SDs, 0 SdLazy, 26 SolverSat, 1 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 22.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 17 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 87.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 11.7s SatisfiabilityAnalysisTime, 259.5s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 506 SizeOfPredicates, 16 NumberOfNonLiveVariables, 124 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 0/24 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 [2021-10-28 23:14:37,142 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-28 23:14:37,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_561c3f94-636d-44bc-8675-fb1da7a5b6d1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...