./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e1a00cf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 4d4c43a5e99017d570432216c5fcf66eb1ad9ac2 ........................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 4d4c43a5e99017d570432216c5fcf66eb1ad9ac2 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-0e1a00c [2020-11-29 15:47:22,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 15:47:22,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 15:47:22,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 15:47:22,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 15:47:22,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 15:47:22,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 15:47:22,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 15:47:22,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 15:47:22,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 15:47:22,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 15:47:22,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 15:47:22,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 15:47:22,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 15:47:22,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 15:47:22,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 15:47:22,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 15:47:22,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 15:47:22,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 15:47:22,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 15:47:22,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 15:47:22,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 15:47:22,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 15:47:22,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 15:47:22,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 15:47:22,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 15:47:22,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 15:47:22,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 15:47:22,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 15:47:22,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 15:47:22,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 15:47:22,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 15:47:22,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 15:47:22,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 15:47:22,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 15:47:22,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 15:47:22,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 15:47:22,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 15:47:22,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 15:47:22,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 15:47:22,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 15:47:22,107 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 15:47:22,149 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 15:47:22,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 15:47:22,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 15:47:22,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 15:47:22,156 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 15:47:22,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 15:47:22,156 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 15:47:22,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 15:47:22,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 15:47:22,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 15:47:22,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 15:47:22,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 15:47:22,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 15:47:22,159 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 15:47:22,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 15:47:22,159 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 15:47:22,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 15:47:22,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 15:47:22,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 15:47:22,160 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 15:47:22,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 15:47:22,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 15:47:22,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 15:47:22,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 15:47:22,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 15:47:22,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 15:47:22,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 15:47:22,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 15:47:22,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 15:47:22,163 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d4c43a5e99017d570432216c5fcf66eb1ad9ac2 [2020-11-29 15:47:22,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 15:47:22,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 15:47:22,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 15:47:22,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 15:47:22,677 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 15:47:22,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c [2020-11-29 15:47:22,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db374559c/7066f985d4454c27815b61688fc8677f/FLAG922c86a1f [2020-11-29 15:47:23,522 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 15:47:23,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c [2020-11-29 15:47:23,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db374559c/7066f985d4454c27815b61688fc8677f/FLAG922c86a1f [2020-11-29 15:47:23,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db374559c/7066f985d4454c27815b61688fc8677f [2020-11-29 15:47:23,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 15:47:23,868 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 15:47:23,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 15:47:23,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 15:47:23,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 15:47:23,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:47:23" (1/1) ... [2020-11-29 15:47:23,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@df04587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:23, skipping insertion in model container [2020-11-29 15:47:23,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:47:23" (1/1) ... [2020-11-29 15:47:23,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 15:47:23,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 15:47:24,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:47:24,163 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 15:47:24,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:47:24,243 INFO L208 MainTranslator]: Completed translation [2020-11-29 15:47:24,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:24 WrapperNode [2020-11-29 15:47:24,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 15:47:24,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 15:47:24,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 15:47:24,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 15:47:24,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:24" (1/1) ... [2020-11-29 15:47:24,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:24" (1/1) ... [2020-11-29 15:47:24,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 15:47:24,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 15:47:24,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 15:47:24,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 15:47:24,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:24" (1/1) ... [2020-11-29 15:47:24,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:24" (1/1) ... [2020-11-29 15:47:24,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:24" (1/1) ... [2020-11-29 15:47:24,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:24" (1/1) ... [2020-11-29 15:47:24,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:24" (1/1) ... [2020-11-29 15:47:24,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:24" (1/1) ... [2020-11-29 15:47:24,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:24" (1/1) ... [2020-11-29 15:47:24,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 15:47:24,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 15:47:24,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 15:47:24,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 15:47:24,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 15:47:24,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 15:47:24,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 15:47:24,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 15:47:24,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 15:47:24,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 15:47:24,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 15:47:24,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 15:47:24,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 15:47:24,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-29 15:47:24,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 15:47:24,926 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 15:47:24,928 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-11-29 15:47:24,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:47:24 BoogieIcfgContainer [2020-11-29 15:47:24,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 15:47:24,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 15:47:24,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 15:47:24,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 15:47:24,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:47:23" (1/3) ... [2020-11-29 15:47:24,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2898f06d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:47:24, skipping insertion in model container [2020-11-29 15:47:24,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:24" (2/3) ... [2020-11-29 15:47:24,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2898f06d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:47:24, skipping insertion in model container [2020-11-29 15:47:24,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:47:24" (3/3) ... [2020-11-29 15:47:24,953 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121a.c [2020-11-29 15:47:24,991 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 15:47:24,999 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 15:47:25,031 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 15:47:25,064 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 15:47:25,065 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 15:47:25,065 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 15:47:25,065 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 15:47:25,065 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 15:47:25,065 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 15:47:25,066 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 15:47:25,066 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 15:47:25,093 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-11-29 15:47:25,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 15:47:25,099 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:47:25,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:47:25,100 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:47:25,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:47:25,107 INFO L82 PathProgramCache]: Analyzing trace with hash 666555284, now seen corresponding path program 1 times [2020-11-29 15:47:25,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 15:47:25,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372192706] [2020-11-29 15:47:25,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 15:47:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:47:25,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:47:25,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372192706] [2020-11-29 15:47:25,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:47:25,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 15:47:25,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292765503] [2020-11-29 15:47:25,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 15:47:25,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 15:47:25,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 15:47:25,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 15:47:25,322 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-11-29 15:47:25,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:47:25,350 INFO L93 Difference]: Finished difference Result 83 states and 139 transitions. [2020-11-29 15:47:25,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 15:47:25,352 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 15:47:25,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:47:25,364 INFO L225 Difference]: With dead ends: 83 [2020-11-29 15:47:25,364 INFO L226 Difference]: Without dead ends: 39 [2020-11-29 15:47:25,368 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 [2020-11-29 15:47:25,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-29 15:47:25,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-29 15:47:25,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 15:47:25,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2020-11-29 15:47:25,416 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 10 [2020-11-29 15:47:25,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:47:25,417 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2020-11-29 15:47:25,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 15:47:25,417 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2020-11-29 15:47:25,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 15:47:25,418 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:47:25,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:47:25,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 15:47:25,419 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:47:25,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:47:25,420 INFO L82 PathProgramCache]: Analyzing trace with hash 131116369, now seen corresponding path program 1 times [2020-11-29 15:47:25,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 15:47:25,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287291455] [2020-11-29 15:47:25,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 15:47:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 15:47:25,503 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 15:47:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 15:47:25,590 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 15:47:25,649 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 15:47:25,650 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 15:47:25,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 15:47:25,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:47:25 BoogieIcfgContainer [2020-11-29 15:47:25,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 15:47:25,715 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 15:47:25,715 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 15:47:25,715 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 15:47:25,716 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:47:24" (3/4) ... [2020-11-29 15:47:25,720 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 15:47:25,720 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 15:47:25,725 INFO L168 Benchmark]: Toolchain (without parser) took 1858.25 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.8 MB in the beginning and 27.8 MB in the end (delta: -5.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 15:47:25,726 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 35.7 MB. Free memory was 19.9 MB in the beginning and 19.8 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 15:47:25,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.48 ms. Allocated memory is still 46.1 MB. Free memory was 22.2 MB in the beginning and 29.4 MB in the end (delta: -7.3 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2020-11-29 15:47:25,728 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.15 ms. Allocated memory is still 46.1 MB. Free memory was 29.4 MB in the beginning and 27.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:47:25,729 INFO L168 Benchmark]: Boogie Preprocessor took 39.31 ms. Allocated memory is still 46.1 MB. Free memory was 27.4 MB in the beginning and 25.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:47:25,730 INFO L168 Benchmark]: RCFGBuilder took 597.42 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 25.6 MB in the beginning and 38.0 MB in the end (delta: -12.3 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2020-11-29 15:47:25,731 INFO L168 Benchmark]: TraceAbstraction took 774.73 ms. Allocated memory is still 56.6 MB. Free memory was 37.4 MB in the beginning and 28.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:47:25,735 INFO L168 Benchmark]: Witness Printer took 5.42 ms. Allocated memory is still 56.6 MB. Free memory was 28.1 MB in the beginning and 27.8 MB in the end (delta: 307.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 15:47:25,749 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 35.7 MB. Free memory was 19.9 MB in the beginning and 19.8 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 373.48 ms. Allocated memory is still 46.1 MB. Free memory was 22.2 MB in the beginning and 29.4 MB in the end (delta: -7.3 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.15 ms. Allocated memory is still 46.1 MB. Free memory was 29.4 MB in the beginning and 27.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.31 ms. Allocated memory is still 46.1 MB. Free memory was 27.4 MB in the beginning and 25.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 597.42 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 25.6 MB in the beginning and 38.0 MB in the end (delta: -12.3 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 774.73 ms. Allocated memory is still 56.6 MB. Free memory was 37.4 MB in the beginning and 28.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.42 ms. Allocated memory is still 56.6 MB. Free memory was 28.1 MB in the beginning and 27.8 MB in the end (delta: 307.2 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 someBinaryFLOATComparisonOperation at line 110, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L118] float x = __VERIFIER_nondet_float(); [L119] float y = 0.0f; [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [one_fmod=1, Zero_fmod={9:0}] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L121] float res = fmod_float(x, y); [L110] return x != x; VAL [one_fmod=1, Zero_fmod={9:0}] [L124] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1121a.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-0e1a00c [2020-11-29 15:47:28,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 15:47:28,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 15:47:28,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 15:47:28,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 15:47:28,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 15:47:28,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 15:47:28,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 15:47:28,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 15:47:28,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 15:47:28,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 15:47:28,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 15:47:28,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 15:47:28,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 15:47:28,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 15:47:28,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 15:47:28,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 15:47:28,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 15:47:28,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 15:47:28,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 15:47:28,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 15:47:28,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 15:47:28,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 15:47:28,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 15:47:28,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 15:47:28,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 15:47:28,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 15:47:28,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 15:47:28,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 15:47:28,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 15:47:28,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 15:47:28,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 15:47:28,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 15:47:28,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 15:47:28,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 15:47:28,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 15:47:28,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 15:47:28,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 15:47:28,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 15:47:28,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 15:47:28,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 15:47:28,231 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 15:47:28,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 15:47:28,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 15:47:28,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 15:47:28,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 15:47:28,262 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 15:47:28,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 15:47:28,262 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 15:47:28,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 15:47:28,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 15:47:28,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 15:47:28,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 15:47:28,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 15:47:28,264 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 15:47:28,264 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 15:47:28,264 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 15:47:28,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 15:47:28,265 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 15:47:28,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 15:47:28,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 15:47:28,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 15:47:28,266 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 15:47:28,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 15:47:28,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 15:47:28,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 15:47:28,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 15:47:28,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 15:47:28,268 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 15:47:28,268 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 15:47:28,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 15:47:28,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 15:47:28,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 15:47:28,269 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d4c43a5e99017d570432216c5fcf66eb1ad9ac2 [2020-11-29 15:47:28,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 15:47:28,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 15:47:28,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 15:47:28,685 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 15:47:28,686 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 15:47:28,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c [2020-11-29 15:47:28,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c36b147ba/9fccfdc73d1c408ba9c040fdc5eed562/FLAGc578102b2 [2020-11-29 15:47:29,454 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 15:47:29,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c [2020-11-29 15:47:29,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c36b147ba/9fccfdc73d1c408ba9c040fdc5eed562/FLAGc578102b2 [2020-11-29 15:47:29,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c36b147ba/9fccfdc73d1c408ba9c040fdc5eed562 [2020-11-29 15:47:29,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 15:47:29,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 15:47:29,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 15:47:29,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 15:47:29,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 15:47:29,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:47:29" (1/1) ... [2020-11-29 15:47:29,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19423677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:29, skipping insertion in model container [2020-11-29 15:47:29,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:47:29" (1/1) ... [2020-11-29 15:47:29,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 15:47:29,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 15:47:30,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:47:30,247 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 15:47:30,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:47:30,319 INFO L208 MainTranslator]: Completed translation [2020-11-29 15:47:30,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:30 WrapperNode [2020-11-29 15:47:30,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 15:47:30,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 15:47:30,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 15:47:30,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 15:47:30,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:30" (1/1) ... [2020-11-29 15:47:30,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:30" (1/1) ... [2020-11-29 15:47:30,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 15:47:30,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 15:47:30,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 15:47:30,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 15:47:30,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:30" (1/1) ... [2020-11-29 15:47:30,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:30" (1/1) ... [2020-11-29 15:47:30,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:30" (1/1) ... [2020-11-29 15:47:30,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:30" (1/1) ... [2020-11-29 15:47:30,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:30" (1/1) ... [2020-11-29 15:47:30,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:30" (1/1) ... [2020-11-29 15:47:30,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:30" (1/1) ... [2020-11-29 15:47:30,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 15:47:30,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 15:47:30,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 15:47:30,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 15:47:30,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 15:47:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2020-11-29 15:47:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 15:47:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 15:47:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-29 15:47:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 15:47:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 15:47:30,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 15:47:30,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-29 15:47:30,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 15:47:30,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 15:47:33,291 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 15:47:33,291 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-11-29 15:47:33,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:47:33 BoogieIcfgContainer [2020-11-29 15:47:33,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 15:47:33,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 15:47:33,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 15:47:33,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 15:47:33,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:47:29" (1/3) ... [2020-11-29 15:47:33,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3761ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:47:33, skipping insertion in model container [2020-11-29 15:47:33,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:47:30" (2/3) ... [2020-11-29 15:47:33,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3761ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:47:33, skipping insertion in model container [2020-11-29 15:47:33,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:47:33" (3/3) ... [2020-11-29 15:47:33,303 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121a.c [2020-11-29 15:47:33,318 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 15:47:33,324 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 15:47:33,337 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 15:47:33,379 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 15:47:33,380 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 15:47:33,380 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 15:47:33,380 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 15:47:33,380 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 15:47:33,381 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 15:47:33,381 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 15:47:33,381 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 15:47:33,395 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-11-29 15:47:33,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 15:47:33,401 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:47:33,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:47:33,402 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:47:33,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:47:33,410 INFO L82 PathProgramCache]: Analyzing trace with hash 666555284, now seen corresponding path program 1 times [2020-11-29 15:47:33,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:47:33,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680166456] [2020-11-29 15:47:33,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 15:47:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:47:33,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 15:47:33,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:47:33,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:47:33,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:47:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:47:33,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680166456] [2020-11-29 15:47:33,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:47:33,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 15:47:33,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702345304] [2020-11-29 15:47:33,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 15:47:33,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:47:33,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 15:47:33,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 15:47:33,866 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-11-29 15:47:33,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:47:33,892 INFO L93 Difference]: Finished difference Result 83 states and 139 transitions. [2020-11-29 15:47:33,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 15:47:33,893 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 15:47:33,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:47:33,902 INFO L225 Difference]: With dead ends: 83 [2020-11-29 15:47:33,902 INFO L226 Difference]: Without dead ends: 39 [2020-11-29 15:47:33,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 15:47:33,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-29 15:47:33,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-29 15:47:33,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 15:47:33,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2020-11-29 15:47:33,942 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 10 [2020-11-29 15:47:33,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:47:33,942 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2020-11-29 15:47:33,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 15:47:33,943 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2020-11-29 15:47:33,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 15:47:33,944 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:47:33,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:47:34,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 15:47:34,159 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:47:34,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:47:34,162 INFO L82 PathProgramCache]: Analyzing trace with hash 131116369, now seen corresponding path program 1 times [2020-11-29 15:47:34,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:47:34,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459372564] [2020-11-29 15:47:34,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 15:47:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:47:34,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 15:47:34,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:47:35,831 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-11-29 15:47:37,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:47:37,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:47:41,692 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_float_~x (_ FloatingPoint 8 24))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_float_~x c_ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2020-11-29 15:47:42,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:47:42,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459372564] [2020-11-29 15:47:42,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:47:42,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-11-29 15:47:42,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205980071] [2020-11-29 15:47:42,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 15:47:42,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:47:42,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 15:47:42,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2020-11-29 15:47:42,078 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand 11 states. [2020-11-29 15:47:44,379 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_fmod_float_~y (_ +zero 8 24)) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((ULTIMATE.start_fmod_float_~x (_ FloatingPoint 8 24))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_float_~x c_ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0))))) is different from true [2020-11-29 15:47:47,585 WARN L197 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-11-29 15:47:50,704 WARN L197 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-11-29 15:47:51,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:47:51,192 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2020-11-29 15:47:51,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 15:47:51,193 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-11-29 15:47:51,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:47:51,194 INFO L225 Difference]: With dead ends: 44 [2020-11-29 15:47:51,194 INFO L226 Difference]: Without dead ends: 39 [2020-11-29 15:47:51,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=41, Invalid=97, Unknown=2, NotChecked=42, Total=182 [2020-11-29 15:47:51,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-29 15:47:51,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-29 15:47:51,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 15:47:51,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2020-11-29 15:47:51,202 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 12 [2020-11-29 15:47:51,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:47:51,202 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-11-29 15:47:51,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 15:47:51,203 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2020-11-29 15:47:51,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 15:47:51,203 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:47:51,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:47:51,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 15:47:51,410 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:47:51,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:47:51,411 INFO L82 PathProgramCache]: Analyzing trace with hash -302456811, now seen corresponding path program 1 times [2020-11-29 15:47:51,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:47:51,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854573087] [2020-11-29 15:47:51,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 15:47:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:47:51,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 15:47:51,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:47:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:47:51,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:47:51,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:47:51,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854573087] [2020-11-29 15:47:51,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:47:51,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 6 [2020-11-29 15:47:51,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442128080] [2020-11-29 15:47:51,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 15:47:51,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:47:51,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 15:47:51,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 15:47:51,739 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand 6 states. [2020-11-29 15:47:51,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:47:51,800 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2020-11-29 15:47:51,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 15:47:51,801 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-29 15:47:51,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:47:51,801 INFO L225 Difference]: With dead ends: 39 [2020-11-29 15:47:51,801 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 15:47:51,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 15:47:51,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 15:47:51,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 15:47:51,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 15:47:51,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 15:47:51,804 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-29 15:47:51,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:47:51,804 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 15:47:51,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 15:47:51,805 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 15:47:51,805 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 15:47:52,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 15:47:52,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 15:47:53,232 WARN L197 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 12 [2020-11-29 15:47:58,323 WARN L197 SmtUtils]: Spent 5.09 s on a formula simplification. DAG size of input: 13 DAG size of output: 7 [2020-11-29 15:47:58,326 INFO L262 CegarLoopResult]: For program point L27(lines 27 31) no Hoare annotation was computed. [2020-11-29 15:47:58,326 INFO L262 CegarLoopResult]: For program point L60-1(lines 60 65) no Hoare annotation was computed. [2020-11-29 15:47:58,326 INFO L262 CegarLoopResult]: For program point L27-1(lines 19 107) no Hoare annotation was computed. [2020-11-29 15:47:58,326 INFO L262 CegarLoopResult]: For program point L27-2(lines 27 31) no Hoare annotation was computed. [2020-11-29 15:47:58,327 INFO L258 CegarLoopResult]: At program point L110(line 110) the Hoare annotation is: (and (exists ((ULTIMATE.start_fmod_float_~x (_ FloatingPoint 8 24))) (= |ULTIMATE.start_fmod_float_#res| (let ((.cse0 (fp.mul roundNearestTiesToEven ULTIMATE.start_fmod_float_~x (_ +zero 8 24)))) (fp.div roundNearestTiesToEven .cse0 .cse0)))) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) [2020-11-29 15:47:58,327 INFO L262 CegarLoopResult]: For program point L69(lines 69 75) no Hoare annotation was computed. [2020-11-29 15:47:58,327 INFO L262 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2020-11-29 15:47:58,327 INFO L258 CegarLoopResult]: At program point L69-2(lines 67 76) the Hoare annotation is: false [2020-11-29 15:47:58,327 INFO L262 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 15:47:58,327 INFO L262 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-29 15:47:58,327 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 15:47:58,327 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 15:47:58,327 INFO L262 CegarLoopResult]: For program point L78(lines 78 80) no Hoare annotation was computed. [2020-11-29 15:47:58,327 INFO L262 CegarLoopResult]: For program point L78-2(lines 19 107) no Hoare annotation was computed. [2020-11-29 15:47:58,328 INFO L262 CegarLoopResult]: For program point L54-1(lines 19 107) no Hoare annotation was computed. [2020-11-29 15:47:58,328 INFO L262 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2020-11-29 15:47:58,328 INFO L265 CegarLoopResult]: At program point L129(lines 112 130) the Hoare annotation is: true [2020-11-29 15:47:58,328 INFO L262 CegarLoopResult]: For program point L88(lines 88 105) no Hoare annotation was computed. [2020-11-29 15:47:58,328 INFO L262 CegarLoopResult]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2020-11-29 15:47:58,328 INFO L258 CegarLoopResult]: At program point L22-2(lines 22 26) the Hoare annotation is: (and (= ULTIMATE.start_fmod_float_~y (_ +zero 8 24)) (= currentRoundingMode roundNearestTiesToEven)) [2020-11-29 15:47:58,328 INFO L262 CegarLoopResult]: For program point L72(lines 72 73) no Hoare annotation was computed. [2020-11-29 15:47:58,328 INFO L262 CegarLoopResult]: For program point L48(lines 19 107) no Hoare annotation was computed. [2020-11-29 15:47:58,328 INFO L258 CegarLoopResult]: At program point L106(lines 19 107) the Hoare annotation is: (not (fp.eq |ULTIMATE.start_fmod_float_#res| |ULTIMATE.start_fmod_float_#res|)) [2020-11-29 15:47:58,329 INFO L262 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2020-11-29 15:47:58,329 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 15:47:58,329 INFO L262 CegarLoopResult]: For program point L90-1(lines 90 94) no Hoare annotation was computed. [2020-11-29 15:47:58,329 INFO L258 CegarLoopResult]: At program point L90-2(lines 90 94) the Hoare annotation is: false [2020-11-29 15:47:58,329 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 15:47:58,329 INFO L262 CegarLoopResult]: For program point L49-2(lines 49 50) no Hoare annotation was computed. [2020-11-29 15:47:58,329 INFO L258 CegarLoopResult]: At program point L49-3(lines 49 50) the Hoare annotation is: false [2020-11-29 15:47:58,329 INFO L262 CegarLoopResult]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2020-11-29 15:47:58,330 INFO L258 CegarLoopResult]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2020-11-29 15:47:58,330 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 15:47:58,330 INFO L262 CegarLoopResult]: For program point L99-3(lines 99 103) no Hoare annotation was computed. [2020-11-29 15:47:58,330 INFO L262 CegarLoopResult]: For program point L124(lines 124 127) no Hoare annotation was computed. [2020-11-29 15:47:58,330 INFO L262 CegarLoopResult]: For program point L42(lines 42 46) no Hoare annotation was computed. [2020-11-29 15:47:58,330 INFO L262 CegarLoopResult]: For program point L42-1(lines 19 107) no Hoare annotation was computed. [2020-11-29 15:47:58,330 INFO L262 CegarLoopResult]: For program point L67-1(lines 67 76) no Hoare annotation was computed. [2020-11-29 15:47:58,330 INFO L262 CegarLoopResult]: For program point L67-3(lines 67 76) no Hoare annotation was computed. [2020-11-29 15:47:58,330 INFO L258 CegarLoopResult]: At program point L84-2(lines 84 87) the Hoare annotation is: false [2020-11-29 15:47:58,330 INFO L262 CegarLoopResult]: For program point L84-3(lines 19 107) no Hoare annotation was computed. [2020-11-29 15:47:58,331 INFO L262 CegarLoopResult]: For program point L43-2(lines 43 44) no Hoare annotation was computed. [2020-11-29 15:47:58,331 INFO L258 CegarLoopResult]: At program point L43-3(lines 43 44) the Hoare annotation is: false [2020-11-29 15:47:58,356 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:47:58,357 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:47:58,357 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-11-29 15:47:58,357 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:47:58,358 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-11-29 15:47:58,360 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:47:58,360 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:47:58,361 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-11-29 15:47:58,361 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:47:58,361 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-11-29 15:47:58,365 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:47:58,366 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:47:58,367 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:47:58,367 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:47:58,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:47:58 BoogieIcfgContainer [2020-11-29 15:47:58,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 15:47:58,370 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 15:47:58,370 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 15:47:58,371 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 15:47:58,371 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:47:33" (3/4) ... [2020-11-29 15:47:58,376 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 15:47:58,394 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-29 15:47:58,394 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-29 15:47:58,395 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 15:47:58,395 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 15:47:58,464 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-11-29 15:47:58,464 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 15:47:58,467 INFO L168 Benchmark]: Toolchain (without parser) took 28631.42 ms. Allocated memory was 46.1 MB in the beginning and 62.9 MB in the end (delta: 16.8 MB). Free memory was 23.2 MB in the beginning and 34.9 MB in the end (delta: -11.7 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-11-29 15:47:58,469 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 46.1 MB. Free memory was 24.2 MB in the beginning and 24.2 MB in the end (delta: 32.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 15:47:58,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 474.82 ms. Allocated memory was 46.1 MB in the beginning and 62.9 MB in the end (delta: 16.8 MB). Free memory was 22.6 MB in the beginning and 37.9 MB in the end (delta: -15.4 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-11-29 15:47:58,473 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.78 ms. Allocated memory is still 62.9 MB. Free memory was 37.9 MB in the beginning and 36.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:47:58,476 INFO L168 Benchmark]: Boogie Preprocessor took 48.46 ms. Allocated memory is still 62.9 MB. Free memory was 36.0 MB in the beginning and 33.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:47:58,477 INFO L168 Benchmark]: RCFGBuilder took 2859.08 ms. Allocated memory is still 62.9 MB. Free memory was 33.9 MB in the beginning and 44.0 MB in the end (delta: -10.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2020-11-29 15:47:58,478 INFO L168 Benchmark]: TraceAbstraction took 25074.42 ms. Allocated memory is still 62.9 MB. Free memory was 43.6 MB in the beginning and 38.0 MB in the end (delta: 5.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2020-11-29 15:47:58,479 INFO L168 Benchmark]: Witness Printer took 95.14 ms. Allocated memory is still 62.9 MB. Free memory was 37.6 MB in the beginning and 34.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:47:58,488 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 46.1 MB. Free memory was 24.2 MB in the beginning and 24.2 MB in the end (delta: 32.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 474.82 ms. Allocated memory was 46.1 MB in the beginning and 62.9 MB in the end (delta: 16.8 MB). Free memory was 22.6 MB in the beginning and 37.9 MB in the end (delta: -15.4 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.78 ms. Allocated memory is still 62.9 MB. Free memory was 37.9 MB in the beginning and 36.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.46 ms. Allocated memory is still 62.9 MB. Free memory was 36.0 MB in the beginning and 33.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2859.08 ms. Allocated memory is still 62.9 MB. Free memory was 33.9 MB in the beginning and 44.0 MB in the end (delta: -10.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 25074.42 ms. Allocated memory is still 62.9 MB. Free memory was 43.6 MB in the beginning and 38.0 MB in the end (delta: 5.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. * Witness Printer took 95.14 ms. Allocated memory is still 62.9 MB. Free memory was 37.6 MB in the beginning and 34.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 112]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 110]: Loop Invariant [2020-11-29 15:47:58,510 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:47:58,510 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:47:58,510 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-11-29 15:47:58,510 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:47:58,511 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-11-29 15:47:58,511 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:47:58,512 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:47:58,512 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-11-29 15:47:58,512 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:47:58,512 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] Derived loop invariant: (\exists ULTIMATE.start_fmod_float_~x : C_FLOAT :: \result == ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.mul~FLOAT(~roundNearestTiesToEven, ULTIMATE.start_fmod_float_~x, ~Pluszero~LONGDOUBLE()), ~fp.mul~FLOAT(~roundNearestTiesToEven, ULTIMATE.start_fmod_float_~x, ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant [2020-11-29 15:47:58,513 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:47:58,514 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:47:58,514 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:47:58,514 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: y == ~Pluszero~LONGDOUBLE() && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 112 SDtfs, 6 SDslu, 263 SDs, 0 SdLazy, 28 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 14.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 35 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 23 FormulaSimplificationTreeSizeReductionInter, 6.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 10 QuantifiedInterpolants, 4565 SizeOfPredicates, 16 NumberOfNonLiveVariables, 196 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...