./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/float_double.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/float_double.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 9e3cc8be4574ed58f48fa7ae6ba17a4162234910 ..................................................................................................................................................................................................................................... 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/float_double.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 9e3cc8be4574ed58f48fa7ae6ba17a4162234910 ......................................................................................................................................................................................................................................................................................... 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 00:26:14,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 00:26:14,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 00:26:14,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 00:26:14,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 00:26:14,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 00:26:14,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 00:26:14,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 00:26:14,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 00:26:14,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 00:26:14,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 00:26:14,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 00:26:14,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 00:26:14,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 00:26:14,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 00:26:14,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 00:26:14,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 00:26:14,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 00:26:14,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 00:26:14,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 00:26:14,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 00:26:14,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 00:26:14,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 00:26:14,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 00:26:14,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 00:26:14,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 00:26:14,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 00:26:14,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 00:26:14,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 00:26:14,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 00:26:14,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 00:26:14,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 00:26:14,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 00:26:14,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 00:26:14,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 00:26:14,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 00:26:14,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 00:26:14,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 00:26:14,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 00:26:14,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 00:26:14,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 00:26:14,222 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 00:26:14,244 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 00:26:14,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 00:26:14,244 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 00:26:14,244 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 00:26:14,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 00:26:14,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 00:26:14,246 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 00:26:14,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 00:26:14,246 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 00:26:14,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 00:26:14,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 00:26:14,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 00:26:14,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 00:26:14,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 00:26:14,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 00:26:14,247 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 00:26:14,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 00:26:14,247 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 00:26:14,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 00:26:14,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 00:26:14,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 00:26:14,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 00:26:14,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:26:14,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 00:26:14,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 00:26:14,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 00:26:14,248 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 00:26:14,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 00:26:14,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 00:26:14,249 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 00:26:14,249 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e3cc8be4574ed58f48fa7ae6ba17a4162234910 [2021-08-26 00:26:14,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 00:26:14,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 00:26:14,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 00:26:14,511 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 00:26:14,512 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 00:26:14,513 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/float_double.c [2021-08-26 00:26:14,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4965bc8f0/9a3968269f39490bb41778b19ad9f98a/FLAGdf81014c1 [2021-08-26 00:26:14,902 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 00:26:14,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/float_double.c [2021-08-26 00:26:14,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4965bc8f0/9a3968269f39490bb41778b19ad9f98a/FLAGdf81014c1 [2021-08-26 00:26:14,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4965bc8f0/9a3968269f39490bb41778b19ad9f98a [2021-08-26 00:26:14,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 00:26:14,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 00:26:14,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 00:26:14,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 00:26:14,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 00:26:14,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:26:14" (1/1) ... [2021-08-26 00:26:14,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@753fb244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:14, skipping insertion in model container [2021-08-26 00:26:14,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:26:14" (1/1) ... [2021-08-26 00:26:14,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 00:26:14,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 00:26:15,068 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/float_double.c[357,370] [2021-08-26 00:26:15,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:26:15,084 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 00:26:15,093 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/float_double.c[357,370] [2021-08-26 00:26:15,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:26:15,103 INFO L208 MainTranslator]: Completed translation [2021-08-26 00:26:15,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:15 WrapperNode [2021-08-26 00:26:15,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 00:26:15,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 00:26:15,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 00:26:15,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 00:26:15,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:15" (1/1) ... [2021-08-26 00:26:15,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:15" (1/1) ... [2021-08-26 00:26:15,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 00:26:15,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 00:26:15,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 00:26:15,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 00:26:15,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:15" (1/1) ... [2021-08-26 00:26:15,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:15" (1/1) ... [2021-08-26 00:26:15,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:15" (1/1) ... [2021-08-26 00:26:15,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:15" (1/1) ... [2021-08-26 00:26:15,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:15" (1/1) ... [2021-08-26 00:26:15,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:15" (1/1) ... [2021-08-26 00:26:15,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:15" (1/1) ... [2021-08-26 00:26:15,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 00:26:15,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 00:26:15,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 00:26:15,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 00:26:15,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:15" (1/1) ... [2021-08-26 00:26:15,184 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:26:15,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 00:26:15,201 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 00:26:15,222 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 00:26:15,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 00:26:15,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 00:26:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 00:26:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 00:26:15,413 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 00:26:15,413 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-26 00:26:15,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:26:15 BoogieIcfgContainer [2021-08-26 00:26:15,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 00:26:15,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 00:26:15,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 00:26:15,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 00:26:15,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:26:14" (1/3) ... [2021-08-26 00:26:15,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650b8152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:26:15, skipping insertion in model container [2021-08-26 00:26:15,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:15" (2/3) ... [2021-08-26 00:26:15,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650b8152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:26:15, skipping insertion in model container [2021-08-26 00:26:15,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:26:15" (3/3) ... [2021-08-26 00:26:15,423 INFO L111 eAbstractionObserver]: Analyzing ICFG float_double.c [2021-08-26 00:26:15,427 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 00:26:15,428 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 00:26:15,469 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 00:26:15,476 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 00:26:15,476 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 00:26:15,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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 00:26:15,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-26 00:26:15,493 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 00:26:15,493 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-26 00:26:15,494 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 00:26:15,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 00:26:15,499 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-08-26 00:26:15,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 00:26:15,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87922740] [2021-08-26 00:26:15,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 00:26:15,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 00:26:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 00:26:15,607 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 00:26:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 00:26:15,649 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 00:26:15,651 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 00:26:15,652 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:26:15,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 00:26:15,658 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 00:26:15,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:26:15 BoogieIcfgContainer [2021-08-26 00:26:15,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 00:26:15,675 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 00:26:15,675 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 00:26:15,675 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 00:26:15,676 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:26:15" (3/4) ... [2021-08-26 00:26:15,678 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 00:26:15,678 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 00:26:15,681 INFO L168 Benchmark]: Toolchain (without parser) took 749.69 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 43.9 MB in the beginning and 54.0 MB in the end (delta: -10.1 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-08-26 00:26:15,681 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 62.9 MB. Free memory is still 45.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:26:15,682 INFO L168 Benchmark]: CACSL2BoogieTranslator took 177.23 ms. Allocated memory is still 62.9 MB. Free memory was 43.8 MB in the beginning and 34.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-26 00:26:15,682 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.12 ms. Allocated memory is still 62.9 MB. Free memory was 34.3 MB in the beginning and 46.8 MB in the end (delta: -12.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 00:26:15,683 INFO L168 Benchmark]: Boogie Preprocessor took 17.04 ms. Allocated memory is still 62.9 MB. Free memory was 46.8 MB in the beginning and 45.9 MB in the end (delta: 951.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 00:26:15,684 INFO L168 Benchmark]: RCFGBuilder took 236.99 ms. Allocated memory is still 62.9 MB. Free memory was 45.9 MB in the beginning and 35.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-26 00:26:15,688 INFO L168 Benchmark]: TraceAbstraction took 255.38 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 35.2 MB in the beginning and 54.3 MB in the end (delta: -19.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:26:15,689 INFO L168 Benchmark]: Witness Printer took 3.48 ms. Allocated memory is still 77.6 MB. Free memory was 54.3 MB in the beginning and 54.0 MB in the end (delta: 347.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:26:15,692 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 62.9 MB. Free memory is still 45.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 177.23 ms. Allocated memory is still 62.9 MB. Free memory was 43.8 MB in the beginning and 34.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.12 ms. Allocated memory is still 62.9 MB. Free memory was 34.3 MB in the beginning and 46.8 MB in the end (delta: -12.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.04 ms. Allocated memory is still 62.9 MB. Free memory was 46.8 MB in the beginning and 45.9 MB in the end (delta: 951.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 236.99 ms. Allocated memory is still 62.9 MB. Free memory was 45.9 MB in the beginning and 35.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 255.38 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 35.2 MB in the beginning and 54.3 MB in the end (delta: -19.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.48 ms. Allocated memory is still 77.6 MB. Free memory was 54.3 MB in the beginning and 54.0 MB in the end (delta: 347.1 kB). There was no memory consumed. 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: 6]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L10] double x = 1e20 + 1.; [L11] float y = x; [L6] COND TRUE !(cond) [L6] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 189.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 6.5ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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: 11.8ms SsaConstructionTime, 33.1ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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 00:26:15,725 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 00:26:17,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 00:26:17,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 00:26:17,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 00:26:17,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 00:26:17,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 00:26:17,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 00:26:17,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 00:26:17,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 00:26:17,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 00:26:17,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 00:26:17,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 00:26:17,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 00:26:17,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 00:26:17,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 00:26:17,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 00:26:17,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 00:26:17,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 00:26:17,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 00:26:17,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 00:26:17,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 00:26:17,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 00:26:17,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 00:26:17,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 00:26:17,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 00:26:17,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 00:26:17,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 00:26:17,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 00:26:17,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 00:26:17,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 00:26:17,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 00:26:17,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 00:26:17,341 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 00:26:17,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 00:26:17,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 00:26:17,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 00:26:17,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 00:26:17,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 00:26:17,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 00:26:17,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 00:26:17,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 00:26:17,347 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 00:26:17,374 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 00:26:17,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 00:26:17,375 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 00:26:17,375 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 00:26:17,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 00:26:17,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 00:26:17,376 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 00:26:17,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 00:26:17,376 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 00:26:17,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 00:26:17,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 00:26:17,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 00:26:17,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 00:26:17,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 00:26:17,377 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 00:26:17,377 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 00:26:17,377 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 00:26:17,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 00:26:17,378 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 00:26:17,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 00:26:17,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 00:26:17,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 00:26:17,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 00:26:17,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:26:17,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 00:26:17,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 00:26:17,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 00:26:17,379 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 00:26:17,379 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 00:26:17,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 00:26:17,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 00:26:17,380 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 00:26:17,380 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e3cc8be4574ed58f48fa7ae6ba17a4162234910 [2021-08-26 00:26:17,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 00:26:17,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 00:26:17,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 00:26:17,698 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 00:26:17,699 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 00:26:17,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/float_double.c [2021-08-26 00:26:17,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4d309ca8/10eda524a72f4f80a0462d163ba3271c/FLAG61e515f09 [2021-08-26 00:26:18,090 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 00:26:18,091 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/float_double.c [2021-08-26 00:26:18,094 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4d309ca8/10eda524a72f4f80a0462d163ba3271c/FLAG61e515f09 [2021-08-26 00:26:18,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4d309ca8/10eda524a72f4f80a0462d163ba3271c [2021-08-26 00:26:18,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 00:26:18,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 00:26:18,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 00:26:18,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 00:26:18,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 00:26:18,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:26:18" (1/1) ... [2021-08-26 00:26:18,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59f46f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18, skipping insertion in model container [2021-08-26 00:26:18,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:26:18" (1/1) ... [2021-08-26 00:26:18,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 00:26:18,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 00:26:18,644 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/float_double.c[357,370] [2021-08-26 00:26:18,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:26:18,658 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 00:26:18,668 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/float_double.c[357,370] [2021-08-26 00:26:18,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:26:18,682 INFO L208 MainTranslator]: Completed translation [2021-08-26 00:26:18,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18 WrapperNode [2021-08-26 00:26:18,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 00:26:18,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 00:26:18,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 00:26:18,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 00:26:18,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (1/1) ... [2021-08-26 00:26:18,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (1/1) ... [2021-08-26 00:26:18,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 00:26:18,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 00:26:18,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 00:26:18,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 00:26:18,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (1/1) ... [2021-08-26 00:26:18,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (1/1) ... [2021-08-26 00:26:18,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (1/1) ... [2021-08-26 00:26:18,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (1/1) ... [2021-08-26 00:26:18,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (1/1) ... [2021-08-26 00:26:18,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (1/1) ... [2021-08-26 00:26:18,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (1/1) ... [2021-08-26 00:26:18,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 00:26:18,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 00:26:18,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 00:26:18,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 00:26:18,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (1/1) ... [2021-08-26 00:26:18,768 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:26:18,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 00:26:18,781 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 00:26:18,804 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 00:26:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 00:26:18,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 00:26:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 00:26:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 00:26:19,082 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 00:26:19,083 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-26 00:26:19,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:26:19 BoogieIcfgContainer [2021-08-26 00:26:19,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 00:26:19,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 00:26:19,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 00:26:19,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 00:26:19,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:26:18" (1/3) ... [2021-08-26 00:26:19,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e966ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:26:19, skipping insertion in model container [2021-08-26 00:26:19,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (2/3) ... [2021-08-26 00:26:19,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e966ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:26:19, skipping insertion in model container [2021-08-26 00:26:19,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:26:19" (3/3) ... [2021-08-26 00:26:19,089 INFO L111 eAbstractionObserver]: Analyzing ICFG float_double.c [2021-08-26 00:26:19,092 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 00:26:19,092 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 00:26:19,120 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 00:26:19,124 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 00:26:19,125 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 00:26:19,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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 00:26:19,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-26 00:26:19,152 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 00:26:19,153 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-26 00:26:19,153 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 00:26:19,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 00:26:19,169 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-08-26 00:26:19,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 00:26:19,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717077] [2021-08-26 00:26:19,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 00:26:19,177 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 00:26:19,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 00:26:19,205 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 00:26:19,213 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 00:26:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 00:26:19,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-26 00:26:19,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 00:26:19,500 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 00:26:19,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 00:26:19,545 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 00:26:19,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 00:26:19,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717077] [2021-08-26 00:26:19,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717077] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 00:26:19,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 00:26:19,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-26 00:26:19,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364764259] [2021-08-26 00:26:19,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 00:26:19,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 00:26:19,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 00:26:19,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-26 00:26:19,560 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 00:26:19,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 00:26:19,573 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-08-26 00:26:19,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 00:26:19,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 4 [2021-08-26 00:26:19,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 00:26:19,578 INFO L225 Difference]: With dead ends: 13 [2021-08-26 00:26:19,578 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 00:26:19,579 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-26 00:26:19,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 00:26:19,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 00:26:19,592 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 00:26:19,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 00:26:19,593 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-08-26 00:26:19,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 00:26:19,593 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 00:26:19,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 00:26:19,594 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 00:26:19,594 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 00:26:19,595 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:26:19,606 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 00:26:19,801 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 00:26:19,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 00:26:19,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 00:26:19,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 00:26:19,834 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 00:26:19,834 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 00:26:19,834 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 00:26:19,834 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 00:26:19,835 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2021-08-26 00:26:19,835 INFO L853 garLoopResultBuilder]: At program point L13(lines 8 14) the Hoare annotation is: (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) [2021-08-26 00:26:19,835 INFO L857 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2021-08-26 00:26:19,835 INFO L857 garLoopResultBuilder]: For program point L6-1(line 6) no Hoare annotation was computed. [2021-08-26 00:26:19,835 INFO L853 garLoopResultBuilder]: At program point L6-3(line 6) the Hoare annotation is: (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) [2021-08-26 00:26:19,838 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 00:26:19,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:26:19 BoogieIcfgContainer [2021-08-26 00:26:19,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 00:26:19,845 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 00:26:19,846 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 00:26:19,846 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 00:26:19,846 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:26:19" (3/4) ... [2021-08-26 00:26:19,848 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 00:26:19,854 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-08-26 00:26:19,854 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 00:26:19,854 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-26 00:26:19,854 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 00:26:19,872 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 00:26:19,873 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 00:26:19,874 INFO L168 Benchmark]: Toolchain (without parser) took 1333.52 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 47.2 MB in the beginning and 58.8 MB in the end (delta: -11.5 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2021-08-26 00:26:19,874 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 67.1 MB. Free memory was 47.6 MB in the beginning and 47.6 MB in the end (delta: 36.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:26:19,874 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.78 ms. Allocated memory is still 67.1 MB. Free memory was 47.0 MB in the beginning and 37.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-26 00:26:19,875 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.94 ms. Allocated memory is still 67.1 MB. Free memory was 37.3 MB in the beginning and 50.6 MB in the end (delta: -13.3 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. [2021-08-26 00:26:19,875 INFO L168 Benchmark]: Boogie Preprocessor took 47.18 ms. Allocated memory is still 67.1 MB. Free memory was 50.6 MB in the beginning and 49.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 00:26:19,876 INFO L168 Benchmark]: RCFGBuilder took 321.17 ms. Allocated memory is still 67.1 MB. Free memory was 49.4 MB in the beginning and 38.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-26 00:26:19,876 INFO L168 Benchmark]: TraceAbstraction took 759.96 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 38.1 MB in the beginning and 60.9 MB in the end (delta: -22.8 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2021-08-26 00:26:19,876 INFO L168 Benchmark]: Witness Printer took 27.24 ms. Allocated memory is still 81.8 MB. Free memory was 60.9 MB in the beginning and 58.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 00:26:19,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 67.1 MB. Free memory was 47.6 MB in the beginning and 47.6 MB in the end (delta: 36.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 142.78 ms. Allocated memory is still 67.1 MB. Free memory was 47.0 MB in the beginning and 37.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.94 ms. Allocated memory is still 67.1 MB. Free memory was 37.3 MB in the beginning and 50.6 MB in the end (delta: -13.3 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.18 ms. Allocated memory is still 67.1 MB. Free memory was 50.6 MB in the beginning and 49.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 321.17 ms. Allocated memory is still 67.1 MB. Free memory was 49.4 MB in the beginning and 38.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 759.96 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 38.1 MB in the beginning and 60.9 MB in the end (delta: -22.8 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * Witness Printer took 27.24 ms. Allocated memory is still 81.8 MB. Free memory was 60.9 MB in the beginning and 58.8 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: 6]: 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, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 719.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 20.9ms, AutomataDifference: 27.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 30.4ms, InitialAbstractionConstructionTime: 6.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 8 SDslu, 1 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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: 5.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 22.6ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 3.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 6.7ms SsaConstructionTime, 34.7ms SatisfiabilityAnalysisTime, 252.2ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 5 NumberOfNonLiveVariables, 28 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: 6]: Loop Invariant Derived loop invariant: cond == 1bv32 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: cond == 1bv32 RESULT: Ultimate proved your program to be correct! [2021-08-26 00:26:19,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...