./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/nan_float_range.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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 ../sv-benchmarks/c/float-benchs/nan_float_range.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 188b463bddf1d83ecad723e2243b3ab1810c254e ....................................................................................................................................................................................................................................... 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 ../sv-benchmarks/c/float-benchs/nan_float_range.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 188b463bddf1d83ecad723e2243b3ab1810c254e .......................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 00:41:58,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 00:41:58,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 00:41:58,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 00:41:58,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 00:41:58,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 00:41:58,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 00:41:58,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 00:41:58,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 00:41:58,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 00:41:58,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 00:41:58,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 00:41:58,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 00:41:58,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 00:41:58,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 00:41:58,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 00:41:58,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 00:41:58,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 00:41:58,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 00:41:58,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 00:41:58,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 00:41:58,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 00:41:58,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 00:41:58,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 00:41:58,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 00:41:58,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 00:41:58,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 00:41:58,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 00:41:58,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 00:41:58,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 00:41:58,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 00:41:58,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 00:41:58,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 00:41:58,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 00:41:58,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 00:41:58,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 00:41:58,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 00:41:58,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 00:41:58,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 00:41:58,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 00:41:58,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 00:41:58,997 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 00:41:59,025 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 00:41:59,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 00:41:59,025 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 00:41:59,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 00:41:59,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 00:41:59,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 00:41:59,027 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 00:41:59,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 00:41:59,027 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 00:41:59,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 00:41:59,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 00:41:59,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 00:41:59,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 00:41:59,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 00:41:59,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 00:41:59,028 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 00:41:59,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 00:41:59,028 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 00:41:59,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 00:41:59,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 00:41:59,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 00:41:59,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 00:41:59,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:41:59,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 00:41:59,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 00:41:59,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 00:41:59,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 00:41:59,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 00:41:59,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 00:41:59,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 00:41:59,035 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 188b463bddf1d83ecad723e2243b3ab1810c254e [2021-08-26 00:41:59,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 00:41:59,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 00:41:59,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 00:41:59,348 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 00:41:59,348 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 00:41:59,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/nan_float_range.c [2021-08-26 00:41:59,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c05885d81/19ab89710f954a3595076cc5868e8a40/FLAGfaa60b38f [2021-08-26 00:41:59,807 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 00:41:59,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_float_range.c [2021-08-26 00:41:59,813 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c05885d81/19ab89710f954a3595076cc5868e8a40/FLAGfaa60b38f [2021-08-26 00:41:59,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c05885d81/19ab89710f954a3595076cc5868e8a40 [2021-08-26 00:41:59,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 00:41:59,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 00:41:59,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 00:41:59,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 00:41:59,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 00:41:59,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:41:59" (1/1) ... [2021-08-26 00:41:59,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f78abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:41:59, skipping insertion in model container [2021-08-26 00:41:59,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:41:59" (1/1) ... [2021-08-26 00:41:59,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 00:41:59,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 00:41:59,974 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_float_range.c[423,436] [2021-08-26 00:41:59,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:41:59,993 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 00:42:00,011 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_float_range.c[423,436] [2021-08-26 00:42:00,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:42:00,030 INFO L208 MainTranslator]: Completed translation [2021-08-26 00:42:00,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:00 WrapperNode [2021-08-26 00:42:00,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 00:42:00,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 00:42:00,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 00:42:00,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 00:42:00,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:00" (1/1) ... [2021-08-26 00:42:00,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:00" (1/1) ... [2021-08-26 00:42:00,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 00:42:00,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 00:42:00,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 00:42:00,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 00:42:00,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:00" (1/1) ... [2021-08-26 00:42:00,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:00" (1/1) ... [2021-08-26 00:42:00,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:00" (1/1) ... [2021-08-26 00:42:00,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:00" (1/1) ... [2021-08-26 00:42:00,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:00" (1/1) ... [2021-08-26 00:42:00,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:00" (1/1) ... [2021-08-26 00:42:00,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:00" (1/1) ... [2021-08-26 00:42:00,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 00:42:00,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 00:42:00,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 00:42:00,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 00:42:00,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:00" (1/1) ... [2021-08-26 00:42:00,107 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:42:00,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 00:42:00,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 00:42:00,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 00:42:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 00:42:00,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 00:42:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 00:42:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 00:42:00,402 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 00:42:00,403 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-26 00:42:00,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:42:00 BoogieIcfgContainer [2021-08-26 00:42:00,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 00:42:00,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 00:42:00,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 00:42:00,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 00:42:00,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:41:59" (1/3) ... [2021-08-26 00:42:00,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2690d711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:42:00, skipping insertion in model container [2021-08-26 00:42:00,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:00" (2/3) ... [2021-08-26 00:42:00,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2690d711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:42:00, skipping insertion in model container [2021-08-26 00:42:00,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:42:00" (3/3) ... [2021-08-26 00:42:00,420 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_float_range.c [2021-08-26 00:42:00,426 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 00:42:00,426 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 00:42:00,483 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 00:42:00,491 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 00:42:00,491 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 00:42:00,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:42:00,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-26 00:42:00,509 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 00:42:00,510 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-26 00:42:00,510 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 00:42:00,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 00:42:00,517 INFO L82 PathProgramCache]: Analyzing trace with hash 28693796, now seen corresponding path program 1 times [2021-08-26 00:42:00,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 00:42:00,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151208634] [2021-08-26 00:42:00,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 00:42:00,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 00:42:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 00:42:00,639 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 00:42:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 00:42:00,692 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 00:42:00,693 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 00:42:00,694 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:42:00,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 00:42:00,701 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 00:42:00,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:42:00 BoogieIcfgContainer [2021-08-26 00:42:00,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 00:42:00,722 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 00:42:00,723 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 00:42:00,723 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 00:42:00,723 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:42:00" (3/4) ... [2021-08-26 00:42:00,726 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 00:42:00,726 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 00:42:00,729 INFO L168 Benchmark]: Toolchain (without parser) took 898.16 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 29.5 MB in the beginning and 37.9 MB in the end (delta: -8.4 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-08-26 00:42:00,730 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 52.4 MB. Free memory was 34.6 MB in the beginning and 34.6 MB in the end (delta: 37.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:42:00,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.55 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 29.3 MB in the beginning and 49.3 MB in the end (delta: -20.0 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-08-26 00:42:00,732 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.53 ms. Allocated memory is still 65.0 MB. Free memory was 49.1 MB in the beginning and 47.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 00:42:00,733 INFO L168 Benchmark]: Boogie Preprocessor took 22.03 ms. Allocated memory is still 65.0 MB. Free memory was 47.7 MB in the beginning and 46.8 MB in the end (delta: 937.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:42:00,735 INFO L168 Benchmark]: RCFGBuilder took 305.54 ms. Allocated memory is still 65.0 MB. Free memory was 46.6 MB in the beginning and 36.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 00:42:00,740 INFO L168 Benchmark]: TraceAbstraction took 310.63 ms. Allocated memory is still 65.0 MB. Free memory was 35.5 MB in the beginning and 38.4 MB in the end (delta: -2.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:42:00,741 INFO L168 Benchmark]: Witness Printer took 3.75 ms. Allocated memory is still 65.0 MB. Free memory was 38.2 MB in the beginning and 37.9 MB in the end (delta: 248.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 00:42:00,748 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 52.4 MB. Free memory was 34.6 MB in the beginning and 34.6 MB in the end (delta: 37.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 202.55 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 29.3 MB in the beginning and 49.3 MB in the end (delta: -20.0 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.53 ms. Allocated memory is still 65.0 MB. Free memory was 49.1 MB in the beginning and 47.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.03 ms. Allocated memory is still 65.0 MB. Free memory was 47.7 MB in the beginning and 46.8 MB in the end (delta: 937.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 305.54 ms. Allocated memory is still 65.0 MB. Free memory was 46.6 MB in the beginning and 36.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 310.63 ms. Allocated memory is still 65.0 MB. Free memory was 35.5 MB in the beginning and 38.4 MB in the end (delta: -2.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.75 ms. Allocated memory is still 65.0 MB. Free memory was 38.2 MB in the beginning and 37.9 MB in the end (delta: 248.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 8]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 16, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L12] float x; [L13] x = __VERIFIER_nondet_float() [L15] COND TRUE x >= -1e10 && x <= 1e10 [L8] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 218.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 7.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.4ms SsaConstructionTime, 39.5ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-26 00:42:00,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 00:42:02,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 00:42:02,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 00:42:02,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 00:42:02,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 00:42:02,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 00:42:02,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 00:42:02,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 00:42:02,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 00:42:02,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 00:42:02,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 00:42:02,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 00:42:02,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 00:42:02,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 00:42:02,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 00:42:02,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 00:42:02,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 00:42:02,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 00:42:02,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 00:42:02,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 00:42:02,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 00:42:02,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 00:42:02,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 00:42:02,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 00:42:02,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 00:42:02,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 00:42:02,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 00:42:02,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 00:42:02,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 00:42:02,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 00:42:02,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 00:42:02,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 00:42:02,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 00:42:02,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 00:42:02,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 00:42:02,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 00:42:02,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 00:42:02,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 00:42:02,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 00:42:02,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 00:42:02,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 00:42:02,748 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 00:42:02,786 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 00:42:02,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 00:42:02,787 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 00:42:02,788 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 00:42:02,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 00:42:02,789 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 00:42:02,789 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 00:42:02,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 00:42:02,790 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 00:42:02,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 00:42:02,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 00:42:02,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 00:42:02,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 00:42:02,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 00:42:02,791 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 00:42:02,792 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 00:42:02,792 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 00:42:02,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 00:42:02,792 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 00:42:02,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 00:42:02,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 00:42:02,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 00:42:02,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 00:42:02,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:42:02,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 00:42:02,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 00:42:02,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 00:42:02,793 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 00:42:02,793 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 00:42:02,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 00:42:02,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 00:42:02,794 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 00:42:02,794 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 188b463bddf1d83ecad723e2243b3ab1810c254e [2021-08-26 00:42:03,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 00:42:03,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 00:42:03,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 00:42:03,145 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 00:42:03,146 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 00:42:03,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/nan_float_range.c [2021-08-26 00:42:03,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a38c913e/c0da08b6dbc840b5a33b068fbcaee93d/FLAG42c8aebba [2021-08-26 00:42:03,575 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 00:42:03,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_float_range.c [2021-08-26 00:42:03,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a38c913e/c0da08b6dbc840b5a33b068fbcaee93d/FLAG42c8aebba [2021-08-26 00:42:03,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a38c913e/c0da08b6dbc840b5a33b068fbcaee93d [2021-08-26 00:42:03,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 00:42:03,594 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 00:42:03,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 00:42:03,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 00:42:03,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 00:42:03,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:42:03" (1/1) ... [2021-08-26 00:42:03,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f81bf46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:03, skipping insertion in model container [2021-08-26 00:42:03,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:42:03" (1/1) ... [2021-08-26 00:42:03,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 00:42:03,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 00:42:03,712 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_float_range.c[423,436] [2021-08-26 00:42:03,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:42:03,737 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 00:42:03,747 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_float_range.c[423,436] [2021-08-26 00:42:03,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:42:03,776 INFO L208 MainTranslator]: Completed translation [2021-08-26 00:42:03,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:03 WrapperNode [2021-08-26 00:42:03,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 00:42:03,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 00:42:03,800 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 00:42:03,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 00:42:03,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:03" (1/1) ... [2021-08-26 00:42:03,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:03" (1/1) ... [2021-08-26 00:42:03,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 00:42:03,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 00:42:03,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 00:42:03,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 00:42:03,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:03" (1/1) ... [2021-08-26 00:42:03,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:03" (1/1) ... [2021-08-26 00:42:03,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:03" (1/1) ... [2021-08-26 00:42:03,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:03" (1/1) ... [2021-08-26 00:42:03,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:03" (1/1) ... [2021-08-26 00:42:03,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:03" (1/1) ... [2021-08-26 00:42:03,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:03" (1/1) ... [2021-08-26 00:42:03,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 00:42:03,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 00:42:03,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 00:42:03,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 00:42:03,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:03" (1/1) ... [2021-08-26 00:42:03,893 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:42:03,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 00:42:03,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 00:42:03,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 00:42:03,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 00:42:03,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 00:42:03,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 00:42:03,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 00:42:04,371 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 00:42:04,372 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-26 00:42:04,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:42:04 BoogieIcfgContainer [2021-08-26 00:42:04,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 00:42:04,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 00:42:04,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 00:42:04,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 00:42:04,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:42:03" (1/3) ... [2021-08-26 00:42:04,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa077b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:42:04, skipping insertion in model container [2021-08-26 00:42:04,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:42:03" (2/3) ... [2021-08-26 00:42:04,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa077b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:42:04, skipping insertion in model container [2021-08-26 00:42:04,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:42:04" (3/3) ... [2021-08-26 00:42:04,380 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_float_range.c [2021-08-26 00:42:04,384 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 00:42:04,384 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 00:42:04,431 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 00:42:04,436 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 00:42:04,437 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 00:42:04,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:42:04,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-26 00:42:04,456 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 00:42:04,456 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-26 00:42:04,457 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 00:42:04,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 00:42:04,467 INFO L82 PathProgramCache]: Analyzing trace with hash 28693796, now seen corresponding path program 1 times [2021-08-26 00:42:04,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 00:42:04,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218591603] [2021-08-26 00:42:04,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 00:42:04,488 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 00:42:04,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 00:42:04,494 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 00:42:04,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-26 00:42:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 00:42:04,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-26 00:42:04,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 00:42:04,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:42:04,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 00:42:05,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:42:05,042 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 00:42:05,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218591603] [2021-08-26 00:42:05,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218591603] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 00:42:05,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 00:42:05,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-26 00:42:05,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964398514] [2021-08-26 00:42:05,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 00:42:05,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 00:42:05,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 00:42:05,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-26 00:42:05,061 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:42:05,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 00:42:05,077 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2021-08-26 00:42:05,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 00:42:05,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-08-26 00:42:05,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 00:42:05,083 INFO L225 Difference]: With dead ends: 18 [2021-08-26 00:42:05,083 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 00:42:05,086 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-26 00:42:05,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 00:42:05,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 00:42:05,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:42:05,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 00:42:05,101 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-08-26 00:42:05,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 00:42:05,101 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 00:42:05,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:42:05,102 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 00:42:05,102 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 00:42:05,104 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:42:05,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-26 00:42:05,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 00:42:05,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 00:42:05,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 00:42:05,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 00:42:05,343 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 00:42:05,344 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 00:42:05,344 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 00:42:05,344 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 00:42:05,344 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2021-08-26 00:42:05,344 INFO L860 garLoopResultBuilder]: At program point L18(lines 10 19) the Hoare annotation is: true [2021-08-26 00:42:05,344 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-08-26 00:42:05,345 INFO L860 garLoopResultBuilder]: At program point L15-1(lines 15 17) the Hoare annotation is: true [2021-08-26 00:42:05,345 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-08-26 00:42:05,345 INFO L857 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2021-08-26 00:42:05,348 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 00:42:05,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:42:05 BoogieIcfgContainer [2021-08-26 00:42:05,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 00:42:05,353 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 00:42:05,353 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 00:42:05,353 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 00:42:05,354 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:42:04" (3/4) ... [2021-08-26 00:42:05,356 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 00:42:05,364 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-08-26 00:42:05,365 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 00:42:05,365 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-26 00:42:05,365 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 00:42:05,390 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 00:42:05,390 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 00:42:05,392 INFO L168 Benchmark]: Toolchain (without parser) took 1796.96 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 36.7 MB in the beginning and 37.1 MB in the end (delta: -433.5 kB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2021-08-26 00:42:05,392 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 58.7 MB. Free memory was 39.7 MB in the beginning and 39.7 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:42:05,392 INFO L168 Benchmark]: CACSL2BoogieTranslator took 204.41 ms. Allocated memory is still 58.7 MB. Free memory was 36.5 MB in the beginning and 41.9 MB in the end (delta: -5.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 00:42:05,393 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.61 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 40.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:42:05,393 INFO L168 Benchmark]: Boogie Preprocessor took 45.54 ms. Allocated memory is still 58.7 MB. Free memory was 40.2 MB in the beginning and 39.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:42:05,394 INFO L168 Benchmark]: RCFGBuilder took 489.15 ms. Allocated memory is still 58.7 MB. Free memory was 39.1 MB in the beginning and 27.8 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 00:42:05,394 INFO L168 Benchmark]: TraceAbstraction took 977.23 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 27.4 MB in the beginning and 39.6 MB in the end (delta: -12.2 MB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. [2021-08-26 00:42:05,394 INFO L168 Benchmark]: Witness Printer took 37.42 ms. Allocated memory is still 71.3 MB. Free memory was 39.2 MB in the beginning and 37.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 00:42:05,397 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 58.7 MB. Free memory was 39.7 MB in the beginning and 39.7 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 204.41 ms. Allocated memory is still 58.7 MB. Free memory was 36.5 MB in the beginning and 41.9 MB in the end (delta: -5.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.61 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 40.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.54 ms. Allocated memory is still 58.7 MB. Free memory was 40.2 MB in the beginning and 39.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 489.15 ms. Allocated memory is still 58.7 MB. Free memory was 39.1 MB in the beginning and 27.8 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 977.23 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 27.4 MB in the beginning and 39.6 MB in the end (delta: -12.2 MB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. * Witness Printer took 37.42 ms. Allocated memory is still 71.3 MB. Free memory was 39.2 MB in the beginning and 37.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 8]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 918.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 7.6ms, AutomataDifference: 36.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 30.0ms, InitialAbstractionConstructionTime: 11.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 10 SDtfs, 8 SDslu, 6 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 5.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 23.1ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 2.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 21.5ms SsaConstructionTime, 35.5ms SatisfiabilityAnalysisTime, 428.6ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 5 NumberOfNonLiveVariables, 29 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-26 00:42:05,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...