./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c -s /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9192ebbb056e27a8831cb8246a8c32082898b28d ................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c -s /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9192ebbb056e27a8831cb8246a8c32082898b28d .................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:19:28,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:19:28,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:19:28,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:19:28,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:19:28,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:19:28,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:19:28,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:19:28,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:19:28,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:19:28,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:19:28,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:19:28,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:19:28,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:19:28,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:19:28,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:19:28,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:19:28,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:19:28,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:19:28,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:19:28,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:19:28,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:19:28,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:19:28,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:19:28,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:19:28,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:19:28,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:19:28,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:19:28,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:19:28,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:19:28,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:19:28,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:19:28,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:19:28,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:19:28,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:19:28,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:19:28,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:19:28,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:19:28,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:19:28,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:19:28,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:19:28,472 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:19:28,514 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:19:28,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:19:28,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:19:28,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:19:28,516 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:19:28,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:19:28,516 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:19:28,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:19:28,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:19:28,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:19:28,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:19:28,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:19:28,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:19:28,522 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:19:28,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:19:28,523 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:19:28,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:19:28,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:19:28,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:19:28,524 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:19:28,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:19:28,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:19:28,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:19:28,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:19:28,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:19:28,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:19:28,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:19:28,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:19:28,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:19:28,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9192ebbb056e27a8831cb8246a8c32082898b28d [2020-11-28 03:19:28,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:19:28,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:19:28,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:19:28,926 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:19:28,928 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:19:28,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2020-11-28 03:19:29,042 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/data/5ee7e1f2a/f8549edf65c945bbbbb5284e2a057773/FLAGf4cd0ae89 [2020-11-28 03:19:29,641 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:19:29,642 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2020-11-28 03:19:29,650 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/data/5ee7e1f2a/f8549edf65c945bbbbb5284e2a057773/FLAGf4cd0ae89 [2020-11-28 03:19:29,995 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/data/5ee7e1f2a/f8549edf65c945bbbbb5284e2a057773 [2020-11-28 03:19:30,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:19:30,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:19:30,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:19:30,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:19:30,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:19:30,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:19:29" (1/1) ... [2020-11-28 03:19:30,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d11617c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30, skipping insertion in model container [2020-11-28 03:19:30,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:19:29" (1/1) ... [2020-11-28 03:19:30,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:19:30,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:19:30,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:19:30,270 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:19:30,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:19:30,345 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:19:30,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30 WrapperNode [2020-11-28 03:19:30,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:19:30,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:19:30,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:19:30,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:19:30,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30" (1/1) ... [2020-11-28 03:19:30,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30" (1/1) ... [2020-11-28 03:19:30,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:19:30,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:19:30,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:19:30,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:19:30,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30" (1/1) ... [2020-11-28 03:19:30,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30" (1/1) ... [2020-11-28 03:19:30,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30" (1/1) ... [2020-11-28 03:19:30,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30" (1/1) ... [2020-11-28 03:19:30,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30" (1/1) ... [2020-11-28 03:19:30,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30" (1/1) ... [2020-11-28 03:19:30,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30" (1/1) ... [2020-11-28 03:19:30,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:19:30,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:19:30,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:19:30,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:19:30,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:19:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:19:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:19:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 03:19:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:19:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 03:19:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:19:30,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:19:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:19:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:19:31,043 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:19:31,044 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-28 03:19:31,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:31 BoogieIcfgContainer [2020-11-28 03:19:31,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:19:31,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:19:31,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:19:31,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:19:31,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:19:29" (1/3) ... [2020-11-28 03:19:31,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112dd583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:19:31, skipping insertion in model container [2020-11-28 03:19:31,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30" (2/3) ... [2020-11-28 03:19:31,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112dd583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:19:31, skipping insertion in model container [2020-11-28 03:19:31,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:31" (3/3) ... [2020-11-28 03:19:31,055 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2020-11-28 03:19:31,068 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:19:31,085 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:19:31,099 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:19:31,126 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:19:31,127 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:19:31,127 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:19:31,127 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:19:31,127 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:19:31,127 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:19:31,128 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:19:31,128 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:19:31,143 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-28 03:19:31,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:19:31,148 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:31,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:31,150 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:31,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:31,156 INFO L82 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2020-11-28 03:19:31,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:31,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530947883] [2020-11-28 03:19:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:31,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:31,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530947883] [2020-11-28 03:19:31,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:31,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:19:31,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567559237] [2020-11-28 03:19:31,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:19:31,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:31,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:19:31,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:19:31,365 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-11-28 03:19:31,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:31,388 INFO L93 Difference]: Finished difference Result 51 states and 77 transitions. [2020-11-28 03:19:31,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:19:31,389 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 03:19:31,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:31,405 INFO L225 Difference]: With dead ends: 51 [2020-11-28 03:19:31,405 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 03:19:31,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:19:31,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 03:19:31,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-28 03:19:31,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 03:19:31,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-11-28 03:19:31,456 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2020-11-28 03:19:31,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:31,457 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-11-28 03:19:31,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:19:31,457 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-11-28 03:19:31,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:19:31,458 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:31,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:31,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:19:31,459 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:31,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:31,461 INFO L82 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2020-11-28 03:19:31,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:31,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651565413] [2020-11-28 03:19:31,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:31,547 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:31,646 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:31,679 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:19:31,679 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:19:31,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:19:31,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:19:31 BoogieIcfgContainer [2020-11-28 03:19:31,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:19:31,717 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:19:31,718 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:19:31,718 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:19:31,718 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:31" (3/4) ... [2020-11-28 03:19:31,722 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:19:31,722 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:19:31,725 INFO L168 Benchmark]: Toolchain (without parser) took 1719.34 ms. Allocated memory is still 107.0 MB. Free memory was 79.2 MB in the beginning and 81.3 MB in the end (delta: -2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:19:31,727 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 81.8 MB. Free memory was 39.5 MB in the beginning and 39.4 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:19:31,728 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.48 ms. Allocated memory is still 107.0 MB. Free memory was 79.2 MB in the beginning and 83.7 MB in the end (delta: -4.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:31,729 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.18 ms. Allocated memory is still 107.0 MB. Free memory was 83.7 MB in the beginning and 82.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:31,731 INFO L168 Benchmark]: Boogie Preprocessor took 39.63 ms. Allocated memory is still 107.0 MB. Free memory was 82.1 MB in the beginning and 80.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:31,731 INFO L168 Benchmark]: RCFGBuilder took 613.80 ms. Allocated memory is still 107.0 MB. Free memory was 80.5 MB in the beginning and 63.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:31,733 INFO L168 Benchmark]: TraceAbstraction took 668.57 ms. Allocated memory is still 107.0 MB. Free memory was 63.2 MB in the beginning and 81.3 MB in the end (delta: -18.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:31,734 INFO L168 Benchmark]: Witness Printer took 4.84 ms. Allocated memory is still 107.0 MB. Free memory is still 81.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:19:31,740 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 81.8 MB. Free memory was 39.5 MB in the beginning and 39.4 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 338.48 ms. Allocated memory is still 107.0 MB. Free memory was 79.2 MB in the beginning and 83.7 MB in the end (delta: -4.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.18 ms. Allocated memory is still 107.0 MB. Free memory was 83.7 MB in the beginning and 82.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.63 ms. Allocated memory is still 107.0 MB. Free memory was 82.1 MB in the beginning and 80.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 613.80 ms. Allocated memory is still 107.0 MB. Free memory was 80.5 MB in the beginning and 63.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 668.57 ms. Allocated memory is still 107.0 MB. Free memory was 63.2 MB in the beginning and 81.3 MB in the end (delta: -18.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.84 ms. Allocated memory is still 107.0 MB. Free memory is still 81.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 60, overapproximation of someBinaryArithmeticFLOAToperation at line 68, overapproximation of bitwiseAnd at line 24. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; VAL [huge_floor=1000000000000000000000000000000] [L68] float x = 0.0f / 0.0f; [L17] __int32_t i0, j0; [L18] __uint32_t i, ix; VAL [huge_floor=1000000000000000000000000000000] [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (x) [L22] EXPR gf_u.word [L22] (i0) = gf_u.word [L24] ix = (i0 & 0x7fffffff) [L25] j0 = (ix >> 23) - 0x7f VAL [huge_floor=1000000000000000000000000000000] [L26] COND FALSE !(j0 < 23) VAL [huge_floor=1000000000000000000000000000000] [L46] COND FALSE !(!((ix) < 0x7f800000L)) [L49] return x; VAL [huge_floor=1000000000000000000000000000000] [L69] float res = floor_float(x); [L60] return x != x; VAL [huge_floor=1000000000000000000000000000000] [L72] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1051.c", 3, "reach_error") VAL [huge_floor=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:19:34,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:19:34,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:19:34,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:19:34,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:19:34,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:19:34,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:19:34,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:19:34,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:19:34,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:19:34,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:19:34,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:19:34,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:19:34,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:19:34,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:19:34,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:19:34,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:19:34,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:19:34,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:19:34,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:19:34,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:19:34,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:19:34,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:19:34,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:19:34,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:19:34,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:19:34,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:19:34,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:19:34,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:19:34,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:19:34,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:19:34,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:19:34,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:19:34,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:19:34,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:19:34,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:19:34,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:19:34,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:19:34,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:19:34,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:19:34,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:19:34,546 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 03:19:34,578 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:19:34,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:19:34,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:19:34,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:19:34,585 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:19:34,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:19:34,586 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:19:34,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:19:34,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:19:34,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:19:34,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:19:34,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:19:34,588 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:19:34,588 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:19:34,589 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:19:34,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:19:34,589 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:19:34,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:19:34,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:19:34,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:19:34,590 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:19:34,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:19:34,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:19:34,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:19:34,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:19:34,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:19:34,591 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:19:34,592 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:19:34,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:19:34,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:19:34,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:19:34,592 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9192ebbb056e27a8831cb8246a8c32082898b28d [2020-11-28 03:19:35,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:19:35,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:19:35,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:19:35,063 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:19:35,064 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:19:35,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2020-11-28 03:19:35,149 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/data/54f69a34c/62ec8507cf71475b892f47dce67d64d6/FLAGb7ed8da5d [2020-11-28 03:19:35,818 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:19:35,820 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2020-11-28 03:19:35,827 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/data/54f69a34c/62ec8507cf71475b892f47dce67d64d6/FLAGb7ed8da5d [2020-11-28 03:19:36,141 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/data/54f69a34c/62ec8507cf71475b892f47dce67d64d6 [2020-11-28 03:19:36,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:19:36,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:19:36,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:19:36,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:19:36,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:19:36,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:19:36" (1/1) ... [2020-11-28 03:19:36,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be891c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:36, skipping insertion in model container [2020-11-28 03:19:36,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:19:36" (1/1) ... [2020-11-28 03:19:36,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:19:36,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:19:36,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:19:36,434 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:19:36,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:19:36,482 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:19:36,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:36 WrapperNode [2020-11-28 03:19:36,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:19:36,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:19:36,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:19:36,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:19:36,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:36" (1/1) ... [2020-11-28 03:19:36,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:36" (1/1) ... [2020-11-28 03:19:36,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:19:36,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:19:36,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:19:36,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:19:36,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:36" (1/1) ... [2020-11-28 03:19:36,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:36" (1/1) ... [2020-11-28 03:19:36,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:36" (1/1) ... [2020-11-28 03:19:36,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:36" (1/1) ... [2020-11-28 03:19:36,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:36" (1/1) ... [2020-11-28 03:19:36,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:36" (1/1) ... [2020-11-28 03:19:36,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:36" (1/1) ... [2020-11-28 03:19:36,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:19:36,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:19:36,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:19:36,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:19:36,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:19:36,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:19:36,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:19:36,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-28 03:19:36,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 03:19:36,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:19:36,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:19:36,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-28 03:19:36,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 03:19:36,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:19:37,529 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:19:37,529 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-28 03:19:37,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:37 BoogieIcfgContainer [2020-11-28 03:19:37,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:19:37,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:19:37,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:19:37,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:19:37,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:19:36" (1/3) ... [2020-11-28 03:19:37,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aaedd8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:19:37, skipping insertion in model container [2020-11-28 03:19:37,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:36" (2/3) ... [2020-11-28 03:19:37,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aaedd8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:19:37, skipping insertion in model container [2020-11-28 03:19:37,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:37" (3/3) ... [2020-11-28 03:19:37,539 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2020-11-28 03:19:37,550 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:19:37,554 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:19:37,566 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:19:37,586 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:19:37,586 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:19:37,586 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:19:37,586 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:19:37,586 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:19:37,587 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:19:37,587 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:19:37,587 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:19:37,599 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-28 03:19:37,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:19:37,604 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:37,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:37,605 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:37,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:37,611 INFO L82 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2020-11-28 03:19:37,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:19:37,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54517194] [2020-11-28 03:19:37,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 03:19:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:37,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 03:19:37,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:37,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:19:37,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:37,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54517194] [2020-11-28 03:19:37,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:37,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:19:37,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716049462] [2020-11-28 03:19:37,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:19:37,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:19:37,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:19:37,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:19:37,803 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-11-28 03:19:37,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:37,820 INFO L93 Difference]: Finished difference Result 51 states and 77 transitions. [2020-11-28 03:19:37,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:19:37,822 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 03:19:37,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:37,831 INFO L225 Difference]: With dead ends: 51 [2020-11-28 03:19:37,832 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 03:19:37,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:19:37,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 03:19:37,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-28 03:19:37,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 03:19:37,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-11-28 03:19:37,869 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2020-11-28 03:19:37,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:37,869 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-11-28 03:19:37,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:19:37,869 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-11-28 03:19:37,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:19:37,870 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:37,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:38,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:19:38,092 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:38,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:38,093 INFO L82 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2020-11-28 03:19:38,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:19:38,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274558219] [2020-11-28 03:19:38,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 03:19:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:38,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:19:38,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:38,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:38,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:19:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:38,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274558219] [2020-11-28 03:19:38,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:38,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-28 03:19:38,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471680439] [2020-11-28 03:19:38,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:19:38,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:19:38,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:19:38,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:19:38,492 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 10 states. [2020-11-28 03:19:39,160 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2020-11-28 03:19:39,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:39,207 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-11-28 03:19:39,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:19:39,207 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-11-28 03:19:39,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:39,208 INFO L225 Difference]: With dead ends: 34 [2020-11-28 03:19:39,208 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 03:19:39,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:19:39,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 03:19:39,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-28 03:19:39,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 03:19:39,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-28 03:19:39,213 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2020-11-28 03:19:39,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:39,213 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-28 03:19:39,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:19:39,213 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-28 03:19:39,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:19:39,217 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:39,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:39,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:19:39,428 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:39,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:39,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1612289523, now seen corresponding path program 1 times [2020-11-28 03:19:39,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:19:39,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195220316] [2020-11-28 03:19:39,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-28 03:19:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:39,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:19:39,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:39,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:39,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:19:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:39,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195220316] [2020-11-28 03:19:39,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:39,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-28 03:19:39,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499426283] [2020-11-28 03:19:39,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:19:39,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:19:39,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:19:39,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:19:39,937 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 8 states. [2020-11-28 03:19:40,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:40,098 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-28 03:19:40,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:19:40,099 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-28 03:19:40,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:40,099 INFO L225 Difference]: With dead ends: 18 [2020-11-28 03:19:40,099 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:19:40,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:19:40,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:19:40,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:19:40,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:19:40,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:19:40,101 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-28 03:19:40,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:40,102 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:19:40,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:19:40,102 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:19:40,102 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:19:40,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 03:19:40,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:19:40,432 INFO L274 CegarLoopResult]: For program point L31(lines 31 33) no Hoare annotation was computed. [2020-11-28 03:19:40,432 INFO L270 CegarLoopResult]: At program point L60(line 60) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_floor_float_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_floor_float_~x))) [2020-11-28 03:19:40,432 INFO L274 CegarLoopResult]: For program point L27(lines 27 44) no Hoare annotation was computed. [2020-11-28 03:19:40,432 INFO L270 CegarLoopResult]: At program point L56(lines 16 57) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_floor_float_#res|)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_floor_float_~x))) [2020-11-28 03:19:40,432 INFO L274 CegarLoopResult]: For program point L19-1(lines 19 23) no Hoare annotation was computed. [2020-11-28 03:19:40,432 INFO L270 CegarLoopResult]: At program point L19-2(lines 19 23) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_floor_float_~x)) [2020-11-28 03:19:40,432 INFO L274 CegarLoopResult]: For program point L19-3(lines 19 23) no Hoare annotation was computed. [2020-11-28 03:19:40,432 INFO L277 CegarLoopResult]: At program point L77(lines 62 78) the Hoare annotation is: true [2020-11-28 03:19:40,433 INFO L274 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2020-11-28 03:19:40,433 INFO L274 CegarLoopResult]: For program point L40-2(lines 40 41) no Hoare annotation was computed. [2020-11-28 03:19:40,433 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 03:19:40,433 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-28 03:19:40,433 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:19:40,433 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:19:40,433 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:19:40,433 INFO L274 CegarLoopResult]: For program point L28(lines 28 34) no Hoare annotation was computed. [2020-11-28 03:19:40,433 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 03:19:40,433 INFO L274 CegarLoopResult]: For program point L37(lines 37 38) no Hoare annotation was computed. [2020-11-28 03:19:40,433 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:19:40,434 INFO L274 CegarLoopResult]: For program point L29(lines 29 33) no Hoare annotation was computed. [2020-11-28 03:19:40,434 INFO L274 CegarLoopResult]: For program point L46(lines 46 49) no Hoare annotation was computed. [2020-11-28 03:19:40,434 INFO L274 CegarLoopResult]: For program point L26(lines 26 50) no Hoare annotation was computed. [2020-11-28 03:19:40,434 INFO L274 CegarLoopResult]: For program point L51(lines 51 55) no Hoare annotation was computed. [2020-11-28 03:19:40,434 INFO L274 CegarLoopResult]: For program point L51-1(lines 16 57) no Hoare annotation was computed. [2020-11-28 03:19:40,434 INFO L274 CegarLoopResult]: For program point L51-2(lines 51 55) no Hoare annotation was computed. [2020-11-28 03:19:40,434 INFO L274 CegarLoopResult]: For program point L72(lines 72 75) no Hoare annotation was computed. [2020-11-28 03:19:40,434 INFO L274 CegarLoopResult]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-11-28 03:19:40,439 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:19:40,443 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:19:40,444 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:19:40,444 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:19:40,444 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:19:40,445 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:19:40,445 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:19:40,445 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:19:40,446 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:19:40,446 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:19:40,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:19:40 BoogieIcfgContainer [2020-11-28 03:19:40,448 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:19:40,449 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:19:40,449 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:19:40,449 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:19:40,449 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:37" (3/4) ... [2020-11-28 03:19:40,452 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:19:40,461 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 03:19:40,462 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 03:19:40,462 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:19:40,462 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:19:40,485 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-28 03:19:40,486 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-28 03:19:40,486 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-28 03:19:40,513 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_45d02564-58dc-458b-8502-c85e5ee81cef/bin/uautomizer/witness.graphml [2020-11-28 03:19:40,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:19:40,514 INFO L168 Benchmark]: Toolchain (without parser) took 4367.45 ms. Allocated memory was 71.3 MB in the beginning and 102.8 MB in the end (delta: 31.5 MB). Free memory was 55.3 MB in the beginning and 84.9 MB in the end (delta: -29.6 MB). Peak memory consumption was 49.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:40,515 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 71.3 MB. Free memory is still 54.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:19:40,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.81 ms. Allocated memory is still 71.3 MB. Free memory was 55.1 MB in the beginning and 44.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:40,516 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.85 ms. Allocated memory is still 71.3 MB. Free memory was 44.2 MB in the beginning and 42.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:40,516 INFO L168 Benchmark]: Boogie Preprocessor took 74.50 ms. Allocated memory is still 71.3 MB. Free memory was 42.5 MB in the beginning and 41.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:19:40,517 INFO L168 Benchmark]: RCFGBuilder took 923.37 ms. Allocated memory is still 71.3 MB. Free memory was 40.9 MB in the beginning and 43.1 MB in the end (delta: -2.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:40,517 INFO L168 Benchmark]: TraceAbstraction took 2915.49 ms. Allocated memory was 71.3 MB in the beginning and 102.8 MB in the end (delta: 31.5 MB). Free memory was 42.5 MB in the beginning and 42.4 MB in the end (delta: 137.0 kB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:40,518 INFO L168 Benchmark]: Witness Printer took 64.26 ms. Allocated memory is still 102.8 MB. Free memory was 41.8 MB in the beginning and 84.9 MB in the end (delta: -43.1 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:40,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 71.3 MB. Free memory is still 54.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 335.81 ms. Allocated memory is still 71.3 MB. Free memory was 55.1 MB in the beginning and 44.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.85 ms. Allocated memory is still 71.3 MB. Free memory was 44.2 MB in the beginning and 42.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.50 ms. Allocated memory is still 71.3 MB. Free memory was 42.5 MB in the beginning and 41.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 923.37 ms. Allocated memory is still 71.3 MB. Free memory was 40.9 MB in the beginning and 43.1 MB in the end (delta: -2.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2915.49 ms. Allocated memory was 71.3 MB in the beginning and 102.8 MB in the end (delta: 31.5 MB). Free memory was 42.5 MB in the beginning and 42.4 MB in the end (delta: 137.0 kB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. * Witness Printer took 64.26 ms. Allocated memory is still 102.8 MB. Free memory was 41.8 MB in the beginning and 84.9 MB in the end (delta: -43.1 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant [2020-11-28 03:19:40,527 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:19:40,527 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 60]: Loop Invariant [2020-11-28 03:19:40,527 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:19:40,527 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:19:40,528 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:19:40,528 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant [2020-11-28 03:19:40,529 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:19:40,529 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:19:40,529 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:19:40,529 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 18 SDslu, 65 SDs, 0 SdLazy, 48 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 41 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 11 QuantifiedInterpolants, 2710 SizeOfPredicates, 19 NumberOfNonLiveVariables, 146 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 proved your program to be correct! Received shutdown request...