./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1031.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_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c -s /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/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 92378978a89ae01e3bc9e388811319081868cc5d ........................................................................................................................................................................................................................................................................................ 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_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c -s /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/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 92378978a89ae01e3bc9e388811319081868cc5d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:11:27,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:11:27,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:11:27,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:11:27,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:11:27,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:11:27,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:11:27,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:11:27,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:11:27,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:11:27,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:11:27,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:11:27,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:11:27,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:11:27,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:11:27,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:11:27,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:11:27,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:11:27,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:11:27,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:11:27,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:11:27,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:11:27,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:11:27,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:11:27,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:11:27,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:11:27,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:11:27,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:11:27,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:11:27,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:11:27,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:11:27,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:11:27,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:11:27,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:11:27,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:11:27,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:11:27,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:11:27,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:11:27,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:11:27,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:11:27,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:11:27,725 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:11:27,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:11:27,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:11:27,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:11:27,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:11:27,776 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:11:27,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:11:27,777 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:11:27,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:11:27,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:11:27,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:11:27,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:11:27,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:11:27,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:11:27,779 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:11:27,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:11:27,780 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:11:27,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:11:27,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:11:27,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:11:27,781 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:11:27,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:11:27,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:11:27,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:11:27,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:11:27,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:11:27,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:11:27,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:11:27,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:11:27,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:11:27,785 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_dc03d323-e0cb-4b51-b641-121bc0c397c6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92378978a89ae01e3bc9e388811319081868cc5d [2020-11-30 00:11:28,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:11:28,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:11:28,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:11:28,259 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:11:28,260 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:11:28,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c [2020-11-30 00:11:28,385 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer/data/7a5036440/0eaa92a02e4b44d39f402e2f02875e25/FLAG42bdead06 [2020-11-30 00:11:28,958 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:11:28,959 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/sv-benchmarks/c/float-newlib/float_req_bl_1031.c [2020-11-30 00:11:28,972 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer/data/7a5036440/0eaa92a02e4b44d39f402e2f02875e25/FLAG42bdead06 [2020-11-30 00:11:29,343 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer/data/7a5036440/0eaa92a02e4b44d39f402e2f02875e25 [2020-11-30 00:11:29,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:11:29,362 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:11:29,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:11:29,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:11:29,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:11:29,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:11:29" (1/1) ... [2020-11-30 00:11:29,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fe233a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:29, skipping insertion in model container [2020-11-30 00:11:29,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:11:29" (1/1) ... [2020-11-30 00:11:29,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:11:29,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:11:29,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:11:29,670 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:11:29,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:11:29,734 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:11:29,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:29 WrapperNode [2020-11-30 00:11:29,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:11:29,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:11:29,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:11:29,739 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:11:29,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:29" (1/1) ... [2020-11-30 00:11:29,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:29" (1/1) ... [2020-11-30 00:11:29,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:11:29,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:11:29,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:11:29,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:11:29,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:29" (1/1) ... [2020-11-30 00:11:29,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:29" (1/1) ... [2020-11-30 00:11:29,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:29" (1/1) ... [2020-11-30 00:11:29,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:29" (1/1) ... [2020-11-30 00:11:29,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:29" (1/1) ... [2020-11-30 00:11:29,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:29" (1/1) ... [2020-11-30 00:11:29,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:29" (1/1) ... [2020-11-30 00:11:29,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:11:29,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:11:29,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:11:29,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:11:29,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/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 [2020-11-30 00:11:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:11:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:11:29,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-30 00:11:29,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:11:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 00:11:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:11:29,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:11:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:11:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:11:30,475 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:11:30,475 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-30 00:11:30,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:30 BoogieIcfgContainer [2020-11-30 00:11:30,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:11:30,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:11:30,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:11:30,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:11:30,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:11:29" (1/3) ... [2020-11-30 00:11:30,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b61758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:11:30, skipping insertion in model container [2020-11-30 00:11:30,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:29" (2/3) ... [2020-11-30 00:11:30,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b61758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:11:30, skipping insertion in model container [2020-11-30 00:11:30,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:30" (3/3) ... [2020-11-30 00:11:30,491 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1031.c [2020-11-30 00:11:30,505 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:11:30,510 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:11:30,523 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:11:30,554 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:11:30,554 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:11:30,554 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:11:30,555 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:11:30,555 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:11:30,555 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:11:30,555 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:11:30,556 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:11:30,573 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-30 00:11:30,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:11:30,593 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:30,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:30,595 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:30,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:30,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1590434411, now seen corresponding path program 1 times [2020-11-30 00:11:30,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:30,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975334604] [2020-11-30 00:11:30,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:30,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:30,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975334604] [2020-11-30 00:11:30,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:11:30,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:11:30,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790625364] [2020-11-30 00:11:30,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:11:30,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:30,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:11:30,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:11:30,927 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-11-30 00:11:30,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:30,955 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-11-30 00:11:30,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:11:30,957 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 00:11:30,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:30,977 INFO L225 Difference]: With dead ends: 41 [2020-11-30 00:11:30,977 INFO L226 Difference]: Without dead ends: 18 [2020-11-30 00:11:30,983 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 [2020-11-30 00:11:31,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-30 00:11:31,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 00:11:31,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 00:11:31,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-11-30 00:11:31,035 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2020-11-30 00:11:31,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:31,036 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-11-30 00:11:31,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:11:31,037 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-11-30 00:11:31,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:11:31,038 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:31,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:31,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:11:31,040 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:31,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:31,043 INFO L82 PathProgramCache]: Analyzing trace with hash -744872786, now seen corresponding path program 1 times [2020-11-30 00:11:31,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:31,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660489938] [2020-11-30 00:11:31,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:31,180 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:31,269 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:31,315 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:31,316 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:11:31,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:11:31,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:11:31 BoogieIcfgContainer [2020-11-30 00:11:31,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:11:31,359 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:11:31,359 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:11:31,359 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:11:31,360 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:30" (3/4) ... [2020-11-30 00:11:31,365 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:11:31,365 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:11:31,368 INFO L168 Benchmark]: Toolchain (without parser) took 2004.58 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 52.9 MB in the beginning and 76.6 MB in the end (delta: -23.7 MB). Peak memory consumption was 1.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:31,369 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 83.9 MB. Free memory was 43.3 MB in the beginning and 43.3 MB in the end (delta: 34.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:31,370 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.92 ms. Allocated memory is still 83.9 MB. Free memory was 52.7 MB in the beginning and 61.5 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:31,371 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.72 ms. Allocated memory is still 83.9 MB. Free memory was 61.5 MB in the beginning and 59.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:31,372 INFO L168 Benchmark]: Boogie Preprocessor took 69.42 ms. Allocated memory is still 83.9 MB. Free memory was 59.8 MB in the beginning and 58.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:31,373 INFO L168 Benchmark]: RCFGBuilder took 595.72 ms. Allocated memory is still 83.9 MB. Free memory was 58.8 MB in the beginning and 43.3 MB in the end (delta: 15.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:31,374 INFO L168 Benchmark]: TraceAbstraction took 877.64 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 42.6 MB in the beginning and 77.1 MB in the end (delta: -34.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:31,375 INFO L168 Benchmark]: Witness Printer took 6.61 ms. Allocated memory is still 109.1 MB. Free memory is still 77.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:31,384 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 83.9 MB. Free memory was 43.3 MB in the beginning and 43.3 MB in the end (delta: 34.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 369.92 ms. Allocated memory is still 83.9 MB. Free memory was 52.7 MB in the beginning and 61.5 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.72 ms. Allocated memory is still 83.9 MB. Free memory was 61.5 MB in the beginning and 59.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.42 ms. Allocated memory is still 83.9 MB. Free memory was 59.8 MB in the beginning and 58.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 595.72 ms. Allocated memory is still 83.9 MB. Free memory was 58.8 MB in the beginning and 43.3 MB in the end (delta: 15.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 877.64 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 42.6 MB in the beginning and 77.1 MB in the end (delta: -34.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.61 ms. Allocated memory is still 109.1 MB. Free memory is still 77.1 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 57, overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 24. Possible FailurePath: [L67] float x = 0.0f / 0.0f; [L14] __uint32_t w; [L16] int exponent_less_127; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (w) = gf_u.word [L24] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 [L26] COND FALSE !(exponent_less_127 < 23) [L42] COND TRUE exponent_less_127 == 128 [L44] return x + x; [L68] float res = round_float(x); [L57] return x != x; [L71] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1031.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 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=22occurred 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, 0.1s 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 [2020-11-30 00:11:34,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:11:34,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:11:34,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:11:34,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:11:34,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:11:34,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:11:34,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:11:34,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:11:34,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:11:34,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:11:34,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:11:34,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:11:34,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:11:34,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:11:34,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:11:34,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:11:34,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:11:34,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:11:34,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:11:34,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:11:34,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:11:34,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:11:34,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:11:34,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:11:34,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:11:34,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:11:34,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:11:34,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:11:34,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:11:34,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:11:34,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:11:34,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:11:34,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:11:34,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:11:34,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:11:34,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:11:34,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:11:34,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:11:34,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:11:34,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:11:34,393 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:11:34,445 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:11:34,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:11:34,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:11:34,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:11:34,449 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:11:34,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:11:34,450 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:11:34,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:11:34,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:11:34,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:11:34,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:11:34,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:11:34,453 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:11:34,453 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:11:34,453 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:11:34,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:11:34,453 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:11:34,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:11:34,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:11:34,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:11:34,455 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:11:34,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:11:34,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:11:34,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:11:34,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:11:34,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:11:34,456 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:11:34,456 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:11:34,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:11:34,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:11:34,457 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:11:34,457 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_dc03d323-e0cb-4b51-b641-121bc0c397c6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92378978a89ae01e3bc9e388811319081868cc5d [2020-11-30 00:11:34,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:11:34,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:11:34,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:11:34,941 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:11:34,944 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:11:34,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c [2020-11-30 00:11:35,029 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer/data/d40b54f93/2b698d739df243c687d0ae734517c9c8/FLAG7f39c8508 [2020-11-30 00:11:35,527 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:11:35,528 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/sv-benchmarks/c/float-newlib/float_req_bl_1031.c [2020-11-30 00:11:35,534 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer/data/d40b54f93/2b698d739df243c687d0ae734517c9c8/FLAG7f39c8508 [2020-11-30 00:11:35,903 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer/data/d40b54f93/2b698d739df243c687d0ae734517c9c8 [2020-11-30 00:11:35,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:11:35,911 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:11:35,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:11:35,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:11:35,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:11:35,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:11:35" (1/1) ... [2020-11-30 00:11:35,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9dd412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:35, skipping insertion in model container [2020-11-30 00:11:35,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:11:35" (1/1) ... [2020-11-30 00:11:35,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:11:35,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:11:36,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:11:36,203 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:11:36,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:11:36,257 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:11:36,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:36 WrapperNode [2020-11-30 00:11:36,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:11:36,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:11:36,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:11:36,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:11:36,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:36" (1/1) ... [2020-11-30 00:11:36,302 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:36" (1/1) ... [2020-11-30 00:11:36,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:11:36,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:11:36,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:11:36,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:11:36,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:36" (1/1) ... [2020-11-30 00:11:36,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:36" (1/1) ... [2020-11-30 00:11:36,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:36" (1/1) ... [2020-11-30 00:11:36,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:36" (1/1) ... [2020-11-30 00:11:36,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:36" (1/1) ... [2020-11-30 00:11:36,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:36" (1/1) ... [2020-11-30 00:11:36,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:36" (1/1) ... [2020-11-30 00:11:36,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:11:36,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:11:36,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:11:36,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:11:36,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/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 [2020-11-30 00:11:36,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:11:36,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:11:36,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-30 00:11:36,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 00:11:36,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:11:36,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:11:36,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-30 00:11:36,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 00:11:36,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:11:37,064 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:11:37,064 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-30 00:11:37,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:37 BoogieIcfgContainer [2020-11-30 00:11:37,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:11:37,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:11:37,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:11:37,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:11:37,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:11:35" (1/3) ... [2020-11-30 00:11:37,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d34f26d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:11:37, skipping insertion in model container [2020-11-30 00:11:37,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:36" (2/3) ... [2020-11-30 00:11:37,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d34f26d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:11:37, skipping insertion in model container [2020-11-30 00:11:37,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:37" (3/3) ... [2020-11-30 00:11:37,087 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1031.c [2020-11-30 00:11:37,099 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:11:37,104 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:11:37,116 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:11:37,138 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:11:37,138 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:11:37,138 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:11:37,138 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:11:37,139 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:11:37,139 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:11:37,139 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:11:37,139 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:11:37,151 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-30 00:11:37,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:11:37,156 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:37,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:37,157 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:37,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:37,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1590434411, now seen corresponding path program 1 times [2020-11-30 00:11:37,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:11:37,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099367977] [2020-11-30 00:11:37,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/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 [2020-11-30 00:11:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:37,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 00:11:37,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:37,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:37,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:11:37,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:37,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099367977] [2020-11-30 00:11:37,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:11:37,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:11:37,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611008022] [2020-11-30 00:11:37,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:11:37,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:11:37,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:11:37,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:11:37,393 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-11-30 00:11:37,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:37,420 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-11-30 00:11:37,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:11:37,422 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 00:11:37,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:37,435 INFO L225 Difference]: With dead ends: 41 [2020-11-30 00:11:37,435 INFO L226 Difference]: Without dead ends: 18 [2020-11-30 00:11:37,438 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 [2020-11-30 00:11:37,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-30 00:11:37,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 00:11:37,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 00:11:37,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-11-30 00:11:37,482 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2020-11-30 00:11:37,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:37,482 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-11-30 00:11:37,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:11:37,483 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-11-30 00:11:37,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:11:37,484 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:37,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:37,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:11:37,709 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:37,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:37,710 INFO L82 PathProgramCache]: Analyzing trace with hash -744872786, now seen corresponding path program 1 times [2020-11-30 00:11:37,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:11:37,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176350124] [2020-11-30 00:11:37,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/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 [2020-11-30 00:11:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:37,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:11:37,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:37,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:11:38,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:38,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176350124] [2020-11-30 00:11:38,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:11:38,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-30 00:11:38,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514032753] [2020-11-30 00:11:38,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 00:11:38,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:11:38,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 00:11:38,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:11:38,438 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 10 states. [2020-11-30 00:11:38,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:38,892 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-11-30 00:11:38,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:11:38,904 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-11-30 00:11:38,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:38,905 INFO L225 Difference]: With dead ends: 23 [2020-11-30 00:11:38,905 INFO L226 Difference]: Without dead ends: 17 [2020-11-30 00:11:38,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:11:38,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-30 00:11:38,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-30 00:11:38,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-30 00:11:38,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-11-30 00:11:38,911 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 11 [2020-11-30 00:11:38,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:38,911 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-30 00:11:38,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 00:11:38,911 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-11-30 00:11:38,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:11:38,912 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:38,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:39,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:11:39,113 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:39,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:39,114 INFO L82 PathProgramCache]: Analyzing trace with hash 812423977, now seen corresponding path program 1 times [2020-11-30 00:11:39,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:11:39,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509944269] [2020-11-30 00:11:39,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/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 [2020-11-30 00:11:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:39,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:11:39,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:39,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:39,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:11:39,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:39,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509944269] [2020-11-30 00:11:39,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:11:39,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-30 00:11:39,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680862735] [2020-11-30 00:11:39,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:11:39,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:11:39,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:11:39,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:11:39,561 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 8 states. [2020-11-30 00:11:39,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:39,741 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-11-30 00:11:39,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:11:39,741 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-30 00:11:39,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:39,742 INFO L225 Difference]: With dead ends: 17 [2020-11-30 00:11:39,742 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:11:39,743 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 [2020-11-30 00:11:39,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:11:39,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:11:39,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:11:39,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:11:39,743 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-30 00:11:39,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:39,743 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:11:39,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:11:39,744 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:11:39,744 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:11:39,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 00:11:39,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:11:40,051 INFO L274 CegarLoopResult]: For program point L27(lines 27 40) no Hoare annotation was computed. [2020-11-30 00:11:40,051 INFO L274 CegarLoopResult]: For program point L48(lines 48 52) no Hoare annotation was computed. [2020-11-30 00:11:40,052 INFO L274 CegarLoopResult]: For program point L48-1(lines 13 54) no Hoare annotation was computed. [2020-11-30 00:11:40,052 INFO L274 CegarLoopResult]: For program point L48-2(lines 48 52) no Hoare annotation was computed. [2020-11-30 00:11:40,052 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 00:11:40,052 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-30 00:11:40,052 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:11:40,052 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:11:40,052 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:11:40,053 INFO L270 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: (and (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_round_float_~x) (= currentRoundingMode roundNearestTiesToEven) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start_round_float_#res|)) [2020-11-30 00:11:40,053 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 00:11:40,053 INFO L270 CegarLoopResult]: At program point L53(lines 13 54) the Hoare annotation is: (and (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_round_float_~x) (= currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start_round_float_#res|)) [2020-11-30 00:11:40,053 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:11:40,053 INFO L274 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-11-30 00:11:40,053 INFO L274 CegarLoopResult]: For program point L42(lines 42 46) no Hoare annotation was computed. [2020-11-30 00:11:40,053 INFO L274 CegarLoopResult]: For program point L71(lines 71 74) no Hoare annotation was computed. [2020-11-30 00:11:40,053 INFO L274 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-11-30 00:11:40,054 INFO L274 CegarLoopResult]: For program point L26(lines 26 47) no Hoare annotation was computed. [2020-11-30 00:11:40,054 INFO L274 CegarLoopResult]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2020-11-30 00:11:40,054 INFO L270 CegarLoopResult]: At program point L18-2(lines 18 22) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_round_float_~x))) [2020-11-30 00:11:40,054 INFO L274 CegarLoopResult]: For program point L18-3(lines 18 22) no Hoare annotation was computed. [2020-11-30 00:11:40,054 INFO L277 CegarLoopResult]: At program point L76(lines 59 77) the Hoare annotation is: true [2020-11-30 00:11:40,063 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,064 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,064 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,065 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,067 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:11:40,067 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:11:40,070 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,070 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,070 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,071 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,071 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:11:40,071 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:11:40,072 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,073 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 00:11:40,073 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:11:40,073 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,074 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 00:11:40,074 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:11:40,075 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,075 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,075 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,075 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,076 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:11:40,076 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:11:40,076 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,077 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,077 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,077 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,077 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:11:40,077 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:11:40,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:11:40 BoogieIcfgContainer [2020-11-30 00:11:40,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:11:40,080 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:11:40,080 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:11:40,081 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:11:40,081 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:37" (3/4) ... [2020-11-30 00:11:40,084 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:11:40,095 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-30 00:11:40,095 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-30 00:11:40,096 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 00:11:40,096 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:11:40,121 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-30 00:11:40,121 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result [2020-11-30 00:11:40,122 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result) && ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result [2020-11-30 00:11:40,142 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_dc03d323-e0cb-4b51-b641-121bc0c397c6/bin/uautomizer/witness.graphml [2020-11-30 00:11:40,143 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:11:40,145 INFO L168 Benchmark]: Toolchain (without parser) took 4233.18 ms. Allocated memory was 48.2 MB in the beginning and 71.3 MB in the end (delta: 23.1 MB). Free memory was 24.8 MB in the beginning and 46.9 MB in the end (delta: -22.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:40,145 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 48.2 MB. Free memory was 30.0 MB in the beginning and 30.0 MB in the end (delta: 25.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:40,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.55 ms. Allocated memory is still 48.2 MB. Free memory was 24.7 MB in the beginning and 27.6 MB in the end (delta: -2.9 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:40,147 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.18 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 27.6 MB in the beginning and 41.7 MB in the end (delta: -14.1 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:40,147 INFO L168 Benchmark]: Boogie Preprocessor took 86.45 ms. Allocated memory is still 58.7 MB. Free memory was 41.6 MB in the beginning and 40.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:40,148 INFO L168 Benchmark]: RCFGBuilder took 624.04 ms. Allocated memory is still 58.7 MB. Free memory was 40.1 MB in the beginning and 24.2 MB in the end (delta: 15.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:40,149 INFO L168 Benchmark]: TraceAbstraction took 3012.38 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 23.9 MB in the beginning and 49.4 MB in the end (delta: -25.6 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:40,149 INFO L168 Benchmark]: Witness Printer took 62.62 ms. Allocated memory is still 71.3 MB. Free memory was 49.4 MB in the beginning and 46.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:40,153 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 48.2 MB. Free memory was 30.0 MB in the beginning and 30.0 MB in the end (delta: 25.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 345.55 ms. Allocated memory is still 48.2 MB. Free memory was 24.7 MB in the beginning and 27.6 MB in the end (delta: -2.9 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.18 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 27.6 MB in the beginning and 41.7 MB in the end (delta: -14.1 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.45 ms. Allocated memory is still 58.7 MB. Free memory was 41.6 MB in the beginning and 40.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 624.04 ms. Allocated memory is still 58.7 MB. Free memory was 40.1 MB in the beginning and 24.2 MB in the end (delta: 15.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3012.38 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 23.9 MB in the beginning and 49.4 MB in the end (delta: -25.6 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. * Witness Printer took 62.62 ms. Allocated memory is still 71.3 MB. Free memory was 49.4 MB in the beginning and 46.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * 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: 13]: Loop Invariant [2020-11-30 00:11:40,166 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,166 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,167 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,167 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,167 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:11:40,167 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:11:40,168 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,168 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,168 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,168 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,169 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:11:40,169 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result - InvariantResult [Line: 18]: Loop Invariant [2020-11-30 00:11:40,169 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 00:11:40,170 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:11:40,170 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 00:11:40,171 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 57]: Loop Invariant [2020-11-30 00:11:40,179 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,179 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,179 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,179 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,180 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:11:40,180 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:11:40,180 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,180 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,181 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,181 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 00:11:40,181 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 00:11:40,181 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result) && ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 31 SDslu, 74 SDs, 0 SdLazy, 44 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 59 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 5 QuantifiedInterpolants, 3560 SizeOfPredicates, 17 NumberOfNonLiveVariables, 142 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...