./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0920a.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_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0920a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/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 77b3a373bd5532f9284ea33fd7b532cf320a99fa ............................................................................................................................................................................................................................................................................................................................................................... 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_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0920a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/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 77b3a373bd5532f9284ea33fd7b532cf320a99fa .................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:11:16,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:11:16,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:11:16,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:11:16,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:11:16,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:11:16,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:11:16,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:11:16,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:11:16,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:11:16,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:11:16,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:11:16,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:11:16,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:11:16,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:11:16,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:11:16,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:11:16,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:11:16,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:11:16,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:11:16,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:11:16,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:11:16,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:11:16,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:11:16,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:11:16,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:11:16,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:11:16,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:11:16,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:11:16,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:11:16,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:11:16,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:11:16,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:11:16,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:11:16,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:11:16,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:11:16,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:11:16,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:11:16,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:11:16,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:11:16,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:11:16,799 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:11:16,828 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:11:16,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:11:16,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:11:16,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:11:16,831 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:11:16,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:11:16,831 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:11:16,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:11:16,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:11:16,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:11:16,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:11:16,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:11:16,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:11:16,833 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:11:16,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:11:16,834 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:11:16,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:11:16,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:11:16,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:11:16,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:11:16,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:11:16,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:11:16,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:11:16,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:11:16,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:11:16,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:11:16,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:11:16,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:11:16,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:11:16,838 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_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77b3a373bd5532f9284ea33fd7b532cf320a99fa [2020-11-30 00:11:17,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:11:17,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:11:17,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:11:17,257 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:11:17,260 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:11:17,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2020-11-30 00:11:17,369 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/data/34088649f/935c60b3de584394b780f973553d8ce1/FLAG441ee305e [2020-11-30 00:11:18,006 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:11:18,007 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2020-11-30 00:11:18,017 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/data/34088649f/935c60b3de584394b780f973553d8ce1/FLAG441ee305e [2020-11-30 00:11:18,346 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/data/34088649f/935c60b3de584394b780f973553d8ce1 [2020-11-30 00:11:18,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:11:18,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:11:18,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:11:18,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:11:18,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:11:18,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9bc715e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18, skipping insertion in model container [2020-11-30 00:11:18,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:11:18,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:11:18,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:11:18,775 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:11:18,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:11:18,858 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:11:18,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18 WrapperNode [2020-11-30 00:11:18,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:11:18,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:11:18,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:11:18,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:11:18,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:11:18,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:11:18,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:11:18,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:11:18,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:11:19,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:11:19,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:11:19,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:11:19,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/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 00:11:19,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:11:19,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:11:19,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-30 00:11:19,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:11:19,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 00:11:19,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:11:19,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:11:19,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:11:19,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:11:19,726 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:11:19,727 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 00:11:19,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:19 BoogieIcfgContainer [2020-11-30 00:11:19,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:11:19,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:11:19,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:11:19,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:11:19,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:11:18" (1/3) ... [2020-11-30 00:11:19,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b564689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:11:19, skipping insertion in model container [2020-11-30 00:11:19,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (2/3) ... [2020-11-30 00:11:19,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b564689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:11:19, skipping insertion in model container [2020-11-30 00:11:19,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:19" (3/3) ... [2020-11-30 00:11:19,758 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0920a.c [2020-11-30 00:11:19,772 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:11:19,778 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:11:19,792 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:11:19,824 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:11:19,825 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:11:19,825 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:11:19,825 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:11:19,826 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:11:19,826 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:11:19,826 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:11:19,826 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:11:19,845 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-11-30 00:11:19,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:11:19,853 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:19,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:19,855 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:19,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:19,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1394505008, now seen corresponding path program 1 times [2020-11-30 00:11:19,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:19,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167318136] [2020-11-30 00:11:19,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:20,191 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 00:11:20,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167318136] [2020-11-30 00:11:20,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:11:20,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:11:20,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261177601] [2020-11-30 00:11:20,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:11:20,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:20,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:11:20,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:11:20,231 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-11-30 00:11:20,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:20,258 INFO L93 Difference]: Finished difference Result 70 states and 111 transitions. [2020-11-30 00:11:20,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:11:20,261 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-30 00:11:20,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:20,271 INFO L225 Difference]: With dead ends: 70 [2020-11-30 00:11:20,272 INFO L226 Difference]: Without dead ends: 32 [2020-11-30 00:11:20,276 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 00:11:20,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-30 00:11:20,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-30 00:11:20,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-30 00:11:20,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2020-11-30 00:11:20,339 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 12 [2020-11-30 00:11:20,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:20,340 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2020-11-30 00:11:20,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:11:20,340 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2020-11-30 00:11:20,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:11:20,341 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:20,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:20,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:11:20,344 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:20,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:20,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1007782307, now seen corresponding path program 1 times [2020-11-30 00:11:20,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:20,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775007013] [2020-11-30 00:11:20,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:20,463 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 00:11:20,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775007013] [2020-11-30 00:11:20,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:11:20,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:11:20,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835410741] [2020-11-30 00:11:20,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:11:20,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:20,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:11:20,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:11:20,468 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand 3 states. [2020-11-30 00:11:20,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:20,515 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2020-11-30 00:11:20,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:11:20,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-30 00:11:20,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:20,522 INFO L225 Difference]: With dead ends: 57 [2020-11-30 00:11:20,522 INFO L226 Difference]: Without dead ends: 32 [2020-11-30 00:11:20,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:11:20,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-30 00:11:20,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-30 00:11:20,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-30 00:11:20,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2020-11-30 00:11:20,541 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 13 [2020-11-30 00:11:20,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:20,542 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2020-11-30 00:11:20,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:11:20,544 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2020-11-30 00:11:20,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:11:20,545 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:20,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:20,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:11:20,547 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:20,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:20,551 INFO L82 PathProgramCache]: Analyzing trace with hash 32951480, now seen corresponding path program 1 times [2020-11-30 00:11:20,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:20,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271262869] [2020-11-30 00:11:20,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:20,705 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:20,815 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:20,889 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:20,891 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:11:20,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:11:20,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:11:20 BoogieIcfgContainer [2020-11-30 00:11:20,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:11:20,957 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:11:20,957 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:11:20,958 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:11:20,958 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:19" (3/4) ... [2020-11-30 00:11:20,962 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:11:20,962 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:11:20,965 INFO L168 Benchmark]: Toolchain (without parser) took 2612.58 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 74.2 MB in the beginning and 78.3 MB in the end (delta: -4.1 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:20,966 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 104.9 MB. Free memory was 62.7 MB in the beginning and 62.6 MB in the end (delta: 69.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:20,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 507.39 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 73.9 MB in the beginning and 101.8 MB in the end (delta: -27.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:20,968 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.32 ms. Allocated memory is still 127.9 MB. Free memory was 101.8 MB in the beginning and 99.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:20,969 INFO L168 Benchmark]: Boogie Preprocessor took 52.55 ms. Allocated memory is still 127.9 MB. Free memory was 99.8 MB in the beginning and 98.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:20,970 INFO L168 Benchmark]: RCFGBuilder took 725.49 ms. Allocated memory is still 127.9 MB. Free memory was 98.0 MB in the beginning and 74.5 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:20,971 INFO L168 Benchmark]: TraceAbstraction took 1224.55 ms. Allocated memory is still 127.9 MB. Free memory was 74.1 MB in the beginning and 78.9 MB in the end (delta: -4.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:20,972 INFO L168 Benchmark]: Witness Printer took 5.61 ms. Allocated memory is still 127.9 MB. Free memory was 78.9 MB in the beginning and 78.3 MB in the end (delta: 644.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:20,978 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 104.9 MB. Free memory was 62.7 MB in the beginning and 62.6 MB in the end (delta: 69.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 507.39 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 73.9 MB in the beginning and 101.8 MB in the end (delta: -27.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.32 ms. Allocated memory is still 127.9 MB. Free memory was 101.8 MB in the beginning and 99.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.55 ms. Allocated memory is still 127.9 MB. Free memory was 99.8 MB in the beginning and 98.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 725.49 ms. Allocated memory is still 127.9 MB. Free memory was 98.0 MB in the beginning and 74.5 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1224.55 ms. Allocated memory is still 127.9 MB. Free memory was 74.1 MB in the beginning and 78.9 MB in the end (delta: -4.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.61 ms. Allocated memory is still 127.9 MB. Free memory was 78.9 MB in the beginning and 78.3 MB in the end (delta: 644.5 kB). 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 someBinaryDOUBLEComparisonOperation at line 139, overapproximation of bitwiseAnd at line 135, overapproximation of someBinaryArithmeticDOUBLEoperation at line 74. Possible FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L148] double x = __VERIFIER_nondet_double(); [L150] EXPR x < 0 && isfinite_double(x) [L129] __int32_t hx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L131] ieee_double_shape_type gh_u; [L132] gh_u.value = (x) [L133] EXPR gh_u.parts.msw [L133] (hx) = gh_u.parts.msw [L135] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L150] EXPR x < 0 && isfinite_double(x) VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L150] COND TRUE (x < 0 && isfinite_double(x)) [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L60] COND FALSE !(hx < 0x00100000) VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L73] COND TRUE hx >= 0x7ff00000 [L74] return x + x; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L152] double res = __ieee754_log(x); [L139] return x != x; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L155] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_0920a.c", 3, "reach_error") VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 91 SDtfs, 0 SDslu, 38 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 277 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 00:11:24,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:11:24,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:11:24,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:11:24,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:11:24,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:11:24,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:11:24,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:11:24,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:11:24,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:11:24,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:11:24,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:11:24,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:11:24,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:11:24,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:11:24,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:11:24,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:11:24,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:11:24,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:11:24,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:11:24,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:11:24,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:11:24,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:11:24,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:11:24,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:11:24,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:11:24,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:11:24,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:11:24,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:11:24,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:11:24,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:11:24,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:11:24,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:11:24,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:11:24,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:11:24,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:11:24,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:11:24,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:11:24,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:11:24,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:11:24,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:11:24,414 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:11:24,475 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:11:24,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:11:24,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:11:24,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:11:24,478 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:11:24,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:11:24,478 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:11:24,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:11:24,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:11:24,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:11:24,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:11:24,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:11:24,480 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:11:24,483 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:11:24,483 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:11:24,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:11:24,484 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:11:24,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:11:24,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:11:24,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:11:24,485 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:11:24,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:11:24,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:11:24,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:11:24,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:11:24,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:11:24,487 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:11:24,487 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:11:24,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:11:24,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:11:24,488 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:11:24,488 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_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77b3a373bd5532f9284ea33fd7b532cf320a99fa [2020-11-30 00:11:24,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:11:25,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:11:25,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:11:25,031 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:11:25,032 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:11:25,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2020-11-30 00:11:25,140 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/data/4559a1474/f3598063d3884a59bbbb20bfde637ccb/FLAG99a2fc5fe [2020-11-30 00:11:25,916 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:11:25,917 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2020-11-30 00:11:25,933 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/data/4559a1474/f3598063d3884a59bbbb20bfde637ccb/FLAG99a2fc5fe [2020-11-30 00:11:26,197 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/data/4559a1474/f3598063d3884a59bbbb20bfde637ccb [2020-11-30 00:11:26,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:11:26,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:11:26,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:11:26,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:11:26,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:11:26,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:11:26" (1/1) ... [2020-11-30 00:11:26,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f5d7668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:26, skipping insertion in model container [2020-11-30 00:11:26,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:11:26" (1/1) ... [2020-11-30 00:11:26,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:11:26,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:11:26,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:11:26,571 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:11:26,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:11:26,739 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:11:26,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:26 WrapperNode [2020-11-30 00:11:26,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:11:26,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:11:26,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:11:26,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:11:26,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:26" (1/1) ... [2020-11-30 00:11:26,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:26" (1/1) ... [2020-11-30 00:11:26,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:11:26,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:11:26,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:11:26,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:11:26,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:26" (1/1) ... [2020-11-30 00:11:26,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:26" (1/1) ... [2020-11-30 00:11:26,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:26" (1/1) ... [2020-11-30 00:11:26,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:26" (1/1) ... [2020-11-30 00:11:26,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:26" (1/1) ... [2020-11-30 00:11:26,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:26" (1/1) ... [2020-11-30 00:11:26,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:26" (1/1) ... [2020-11-30 00:11:26,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:11:26,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:11:26,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:11:26,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:11:26,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/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 00:11:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-30 00:11:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-30 00:11:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:11:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:11:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 00:11:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:11:27,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:11:27,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 00:11:27,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:11:52,377 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:11:52,377 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 00:11:52,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:52 BoogieIcfgContainer [2020-11-30 00:11:52,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:11:52,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:11:52,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:11:52,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:11:52,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:11:26" (1/3) ... [2020-11-30 00:11:52,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da5cee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:11:52, skipping insertion in model container [2020-11-30 00:11:52,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:26" (2/3) ... [2020-11-30 00:11:52,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da5cee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:11:52, skipping insertion in model container [2020-11-30 00:11:52,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:52" (3/3) ... [2020-11-30 00:11:52,391 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0920a.c [2020-11-30 00:11:52,405 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:11:52,412 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:11:52,427 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:11:52,460 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:11:52,460 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:11:52,460 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:11:52,461 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:11:52,461 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:11:52,461 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:11:52,461 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:11:52,462 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:11:52,478 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-11-30 00:11:52,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:11:52,484 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:52,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:52,486 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:52,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:52,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1394505008, now seen corresponding path program 1 times [2020-11-30 00:11:52,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:11:52,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107481291] [2020-11-30 00:11:52,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/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 00:11:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:52,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 00:11:52,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:52,874 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 00:11:52,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:11:52,885 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 00:11:52,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107481291] [2020-11-30 00:11:52,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:11:52,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:11:52,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927667796] [2020-11-30 00:11:52,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:11:52,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:11:52,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:11:52,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:11:52,934 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-11-30 00:11:52,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:52,968 INFO L93 Difference]: Finished difference Result 70 states and 111 transitions. [2020-11-30 00:11:52,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:11:52,970 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-30 00:11:52,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:52,986 INFO L225 Difference]: With dead ends: 70 [2020-11-30 00:11:52,986 INFO L226 Difference]: Without dead ends: 32 [2020-11-30 00:11:52,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 00:11:53,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-30 00:11:53,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-30 00:11:53,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-30 00:11:53,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2020-11-30 00:11:53,045 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 12 [2020-11-30 00:11:53,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:53,045 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2020-11-30 00:11:53,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:11:53,046 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2020-11-30 00:11:53,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:11:53,047 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:53,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:53,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:11:53,263 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:53,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:53,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1007782307, now seen corresponding path program 1 times [2020-11-30 00:11:53,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:11:53,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947807932] [2020-11-30 00:11:53,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/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 00:11:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:53,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:53,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:53,546 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 00:11:53,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:11:53,550 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 00:11:53,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947807932] [2020-11-30 00:11:53,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:11:53,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 00:11:53,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653847975] [2020-11-30 00:11:53,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:11:53,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:11:53,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:11:53,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:11:53,561 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand 3 states. [2020-11-30 00:11:53,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:53,623 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2020-11-30 00:11:53,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:11:53,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-30 00:11:53,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:53,627 INFO L225 Difference]: With dead ends: 57 [2020-11-30 00:11:53,628 INFO L226 Difference]: Without dead ends: 32 [2020-11-30 00:11:53,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:11:53,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-30 00:11:53,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-30 00:11:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-30 00:11:53,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2020-11-30 00:11:53,644 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 13 [2020-11-30 00:11:53,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:53,644 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2020-11-30 00:11:53,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:11:53,646 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2020-11-30 00:11:53,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:11:53,650 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:53,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:53,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:11:53,861 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:53,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:53,861 INFO L82 PathProgramCache]: Analyzing trace with hash 32951480, now seen corresponding path program 1 times [2020-11-30 00:11:53,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:11:53,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656157043] [2020-11-30 00:11:53,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/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 00:11:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:54,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:11:54,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:54,306 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-11-30 00:11:54,540 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 00:11:54,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:11:54,851 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 00:11:54,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656157043] [2020-11-30 00:11:54,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:11:54,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-30 00:11:54,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281876262] [2020-11-30 00:11:54,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 00:11:54,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:11:54,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 00:11:54,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:11:54,861 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand 10 states. [2020-11-30 00:11:55,149 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 8 [2020-11-30 00:12:02,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:02,030 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2020-11-30 00:12:02,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:12:02,069 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-11-30 00:12:02,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:02,070 INFO L225 Difference]: With dead ends: 37 [2020-11-30 00:12:02,071 INFO L226 Difference]: Without dead ends: 19 [2020-11-30 00:12:02,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:12:02,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-30 00:12:02,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-30 00:12:02,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-30 00:12:02,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-11-30 00:12:02,076 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2020-11-30 00:12:02,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:02,076 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-11-30 00:12:02,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 00:12:02,077 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-11-30 00:12:02,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:12:02,077 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:02,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:02,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 00:12:02,293 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:02,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:02,294 INFO L82 PathProgramCache]: Analyzing trace with hash -677236169, now seen corresponding path program 1 times [2020-11-30 00:12:02,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:12:02,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236496025] [2020-11-30 00:12:02,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 00:12:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:04,094 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:05,803 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:05,997 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 00:12:05,997 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:12:06,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 00:12:06,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:12:06 BoogieIcfgContainer [2020-11-30 00:12:06,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:12:06,305 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:12:06,305 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:12:06,305 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:12:06,306 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:52" (3/4) ... [2020-11-30 00:12:06,309 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:12:06,449 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_90ea2d71-c5e3-48a6-b300-d9e7d2ffdf69/bin/uautomizer/witness.graphml [2020-11-30 00:12:06,450 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:12:06,451 INFO L168 Benchmark]: Toolchain (without parser) took 40248.40 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 43.1 MB in the beginning and 60.2 MB in the end (delta: -17.1 MB). Peak memory consumption was 33.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:06,452 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 62.9 MB. Free memory was 45.4 MB in the beginning and 45.3 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:06,454 INFO L168 Benchmark]: CACSL2BoogieTranslator took 536.12 ms. Allocated memory is still 62.9 MB. Free memory was 42.9 MB in the beginning and 45.3 MB in the end (delta: -2.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:06,454 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.06 ms. Allocated memory is still 62.9 MB. Free memory was 45.3 MB in the beginning and 43.2 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:06,455 INFO L168 Benchmark]: Boogie Preprocessor took 103.71 ms. Allocated memory is still 62.9 MB. Free memory was 43.0 MB in the beginning and 40.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:06,455 INFO L168 Benchmark]: RCFGBuilder took 25426.50 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 40.9 MB in the beginning and 50.8 MB in the end (delta: -9.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:06,456 INFO L168 Benchmark]: TraceAbstraction took 13922.25 ms. Allocated memory is still 81.8 MB. Free memory was 50.5 MB in the beginning and 30.1 MB in the end (delta: 20.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:06,456 INFO L168 Benchmark]: Witness Printer took 144.73 ms. Allocated memory is still 81.8 MB. Free memory was 30.1 MB in the beginning and 60.2 MB in the end (delta: -30.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:06,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 62.9 MB. Free memory was 45.4 MB in the beginning and 45.3 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 536.12 ms. Allocated memory is still 62.9 MB. Free memory was 42.9 MB in the beginning and 45.3 MB in the end (delta: -2.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 105.06 ms. Allocated memory is still 62.9 MB. Free memory was 45.3 MB in the beginning and 43.2 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 103.71 ms. Allocated memory is still 62.9 MB. Free memory was 43.0 MB in the beginning and 40.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 25426.50 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 40.9 MB in the beginning and 50.8 MB in the end (delta: -9.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13922.25 ms. Allocated memory is still 81.8 MB. Free memory was 50.5 MB in the beginning and 30.1 MB in the end (delta: 20.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. * Witness Printer took 144.73 ms. Allocated memory is still 81.8 MB. Free memory was 30.1 MB in the beginning and 60.2 MB in the end (delta: -30.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L148] double x = __VERIFIER_nondet_double(); [L150] EXPR x < 0 && isfinite_double(x) [L129] __int32_t hx; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L131] ieee_double_shape_type gh_u; [L132] gh_u.value = (x) [L133] EXPR gh_u.parts.msw [L133] (hx) = gh_u.parts.msw [L135] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L150] EXPR x < 0 && isfinite_double(x) VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L150] COND TRUE (x < 0 && isfinite_double(x)) [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L60] COND TRUE hx < 0x00100000 VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L61] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L62] return -two54_log / zero; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L152] double res = __ieee754_log(x); [L139] return x != x; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L155] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_0920a.c", 3, "reach_error") VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 38 SDslu, 75 SDs, 0 SdLazy, 20 SolverSat, 2 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 78 ConstructedInterpolants, 17 QuantifiedInterpolants, 4426 SizeOfPredicates, 8 NumberOfNonLiveVariables, 195 ConjunctsInSsa, 11 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 incorrect! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...