./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0730b.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-newlib/float_req_bl_0730b.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 3c929687e1048988919d423afa09e6828bbc6230 ...................................................................................................................................................................................................................................................................................................... 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-newlib/float_req_bl_0730b.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 3c929687e1048988919d423afa09e6828bbc6230 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 01:48:37,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 01:48:38,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 01:48:38,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 01:48:38,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 01:48:38,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 01:48:38,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 01:48:38,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 01:48:38,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 01:48:38,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 01:48:38,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 01:48:38,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 01:48:38,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 01:48:38,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 01:48:38,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 01:48:38,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 01:48:38,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 01:48:38,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 01:48:38,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 01:48:38,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 01:48:38,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 01:48:38,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 01:48:38,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 01:48:38,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 01:48:38,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 01:48:38,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 01:48:38,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 01:48:38,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 01:48:38,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 01:48:38,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 01:48:38,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 01:48:38,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 01:48:38,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 01:48:38,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 01:48:38,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 01:48:38,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 01:48:38,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 01:48:38,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 01:48:38,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 01:48:38,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 01:48:38,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 01:48:38,179 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 01:48:38,235 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 01:48:38,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 01:48:38,237 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 01:48:38,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 01:48:38,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 01:48:38,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 01:48:38,239 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 01:48:38,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 01:48:38,240 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 01:48:38,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 01:48:38,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 01:48:38,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 01:48:38,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 01:48:38,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 01:48:38,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 01:48:38,242 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 01:48:38,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 01:48:38,242 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 01:48:38,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 01:48:38,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 01:48:38,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 01:48:38,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 01:48:38,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:48:38,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 01:48:38,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 01:48:38,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 01:48:38,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 01:48:38,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 01:48:38,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 01:48:38,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 01:48:38,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c929687e1048988919d423afa09e6828bbc6230 [2021-08-26 01:48:38,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 01:48:38,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 01:48:38,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 01:48:38,584 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 01:48:38,584 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 01:48:38,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0730b.c [2021-08-26 01:48:38,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2244ebc70/1d4eb7077640450bb64c11251dec6f62/FLAG2c28a0e81 [2021-08-26 01:48:39,115 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 01:48:39,119 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0730b.c [2021-08-26 01:48:39,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2244ebc70/1d4eb7077640450bb64c11251dec6f62/FLAG2c28a0e81 [2021-08-26 01:48:39,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2244ebc70/1d4eb7077640450bb64c11251dec6f62 [2021-08-26 01:48:39,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 01:48:39,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 01:48:39,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 01:48:39,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 01:48:39,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 01:48:39,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:48:39" (1/1) ... [2021-08-26 01:48:39,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@780c6d61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:39, skipping insertion in model container [2021-08-26 01:48:39,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:48:39" (1/1) ... [2021-08-26 01:48:39,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 01:48:39,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 01:48:39,365 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-newlib/float_req_bl_0730b.c[2069,2082] [2021-08-26 01:48:39,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:48:39,389 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 01:48:39,454 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-newlib/float_req_bl_0730b.c[2069,2082] [2021-08-26 01:48:39,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:48:39,476 INFO L208 MainTranslator]: Completed translation [2021-08-26 01:48:39,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:39 WrapperNode [2021-08-26 01:48:39,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 01:48:39,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 01:48:39,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 01:48:39,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 01:48:39,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:39" (1/1) ... [2021-08-26 01:48:39,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:39" (1/1) ... [2021-08-26 01:48:39,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 01:48:39,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 01:48:39,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 01:48:39,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 01:48:39,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:39" (1/1) ... [2021-08-26 01:48:39,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:39" (1/1) ... [2021-08-26 01:48:39,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:39" (1/1) ... [2021-08-26 01:48:39,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:39" (1/1) ... [2021-08-26 01:48:39,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:39" (1/1) ... [2021-08-26 01:48:39,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:39" (1/1) ... [2021-08-26 01:48:39,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:39" (1/1) ... [2021-08-26 01:48:39,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 01:48:39,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 01:48:39,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 01:48:39,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 01:48:39,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:39" (1/1) ... [2021-08-26 01:48:39,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:48:39,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:48:39,614 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 01:48:39,642 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 01:48:39,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 01:48:39,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 01:48:39,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-08-26 01:48:39,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 01:48:39,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-08-26 01:48:39,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 01:48:39,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 01:48:39,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 01:48:39,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 01:48:40,138 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 01:48:40,139 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-08-26 01:48:40,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:48:40 BoogieIcfgContainer [2021-08-26 01:48:40,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 01:48:40,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 01:48:40,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 01:48:40,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 01:48:40,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 01:48:39" (1/3) ... [2021-08-26 01:48:40,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8a64bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:48:40, skipping insertion in model container [2021-08-26 01:48:40,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:39" (2/3) ... [2021-08-26 01:48:40,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8a64bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:48:40, skipping insertion in model container [2021-08-26 01:48:40,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:48:40" (3/3) ... [2021-08-26 01:48:40,148 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730b.c [2021-08-26 01:48:40,153 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 01:48:40,153 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 01:48:40,201 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 01:48:40,209 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 01:48:40,210 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 01:48:40,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 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 01:48:40,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 01:48:40,226 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:48:40,226 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:48:40,227 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:48:40,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:48:40,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1903716510, now seen corresponding path program 1 times [2021-08-26 01:48:40,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:48:40,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691074732] [2021-08-26 01:48:40,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:48:40,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:48:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:48:40,380 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 01:48:40,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:48:40,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691074732] [2021-08-26 01:48:40,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691074732] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 01:48:40,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:48:40,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 01:48:40,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034659298] [2021-08-26 01:48:40,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 01:48:40,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:48:40,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 01:48:40,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:48:40,403 INFO L87 Difference]: Start difference. First operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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 01:48:40,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:48:40,421 INFO L93 Difference]: Finished difference Result 72 states and 112 transitions. [2021-08-26 01:48:40,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 01:48:40,422 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) Word has length 9 [2021-08-26 01:48:40,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:48:40,429 INFO L225 Difference]: With dead ends: 72 [2021-08-26 01:48:40,429 INFO L226 Difference]: Without dead ends: 34 [2021-08-26 01:48:40,432 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:48:40,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-26 01:48:40,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-08-26 01:48:40,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 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 01:48:40,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2021-08-26 01:48:40,465 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 9 [2021-08-26 01:48:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:48:40,466 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2021-08-26 01:48:40,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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 01:48:40,467 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2021-08-26 01:48:40,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 01:48:40,467 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:48:40,467 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:48:40,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 01:48:40,468 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:48:40,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:48:40,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1484634303, now seen corresponding path program 1 times [2021-08-26 01:48:40,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:48:40,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934830729] [2021-08-26 01:48:40,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:48:40,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:48:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 01:48:40,546 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 01:48:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 01:48:40,611 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 01:48:40,611 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 01:48:40,613 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:48:40,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 01:48:40,619 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 01:48:40,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 01:48:40 BoogieIcfgContainer [2021-08-26 01:48:40,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 01:48:40,654 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 01:48:40,654 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 01:48:40,654 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 01:48:40,655 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:48:40" (3/4) ... [2021-08-26 01:48:40,659 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 01:48:40,659 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 01:48:40,661 INFO L168 Benchmark]: Toolchain (without parser) took 1508.83 ms. Allocated memory was 73.4 MB in the beginning and 92.3 MB in the end (delta: 18.9 MB). Free memory was 54.6 MB in the beginning and 72.1 MB in the end (delta: -17.5 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. [2021-08-26 01:48:40,662 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 73.4 MB. Free memory was 53.9 MB in the beginning and 53.8 MB in the end (delta: 32.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:48:40,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.34 ms. Allocated memory is still 73.4 MB. Free memory was 54.5 MB in the beginning and 54.2 MB in the end (delta: 283.9 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 01:48:40,666 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.92 ms. Allocated memory is still 73.4 MB. Free memory was 54.2 MB in the beginning and 52.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:48:40,670 INFO L168 Benchmark]: Boogie Preprocessor took 52.07 ms. Allocated memory is still 73.4 MB. Free memory was 52.2 MB in the beginning and 50.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:48:40,671 INFO L168 Benchmark]: RCFGBuilder took 556.41 ms. Allocated memory is still 73.4 MB. Free memory was 50.7 MB in the beginning and 53.5 MB in the end (delta: -2.9 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. [2021-08-26 01:48:40,671 INFO L168 Benchmark]: TraceAbstraction took 509.77 ms. Allocated memory was 73.4 MB in the beginning and 92.3 MB in the end (delta: 18.9 MB). Free memory was 52.9 MB in the beginning and 72.1 MB in the end (delta: -19.3 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. [2021-08-26 01:48:40,672 INFO L168 Benchmark]: Witness Printer took 5.78 ms. Allocated memory is still 92.3 MB. Free memory is still 72.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:48:40,680 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 73.4 MB. Free memory was 53.9 MB in the beginning and 53.8 MB in the end (delta: 32.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 324.34 ms. Allocated memory is still 73.4 MB. Free memory was 54.5 MB in the beginning and 54.2 MB in the end (delta: 283.9 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.92 ms. Allocated memory is still 73.4 MB. Free memory was 54.2 MB in the beginning and 52.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.07 ms. Allocated memory is still 73.4 MB. Free memory was 52.2 MB in the beginning and 50.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 556.41 ms. Allocated memory is still 73.4 MB. Free memory was 50.7 MB in the beginning and 53.5 MB in the end (delta: -2.9 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 509.77 ms. Allocated memory was 73.4 MB in the beginning and 92.3 MB in the end (delta: 18.9 MB). Free memory was 52.9 MB in the beginning and 72.1 MB in the end (delta: -19.3 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.78 ms. Allocated memory is still 92.3 MB. Free memory is still 72.1 MB. 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: 108]: 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 107, overapproximation of bitwiseAnd at line 26, overapproximation of someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L103] float x = 0.0f; [L17] float z; [L18] __uint32_t r, hx; [L19] __int32_t ix, s, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L22] ieee_float_shape_type gf_u; [L23] gf_u.value = (x) [L24] EXPR gf_u.word [L24] (ix) = gf_u.word [L26] hx = ix & 0x7fffffff VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L28] COND TRUE !((hx) < 0x7f800000L) [L29] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L104] float res = __ieee754_sqrtf(x); [L107] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L107] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L108] reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 418.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 7.2ms, AutomataDifference: 41.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 48 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.9ms SsaConstructionTime, 89.7ms SatisfiabilityAnalysisTime, 52.4ms InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-26 01:48:40,716 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 01:48:42,611 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-08-26 01:48:42,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 01:48:42,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 01:48:42,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 01:48:42,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 01:48:42,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 01:48:42,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 01:48:42,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 01:48:42,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 01:48:42,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 01:48:42,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 01:48:42,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 01:48:42,719 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 01:48:42,759 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 01:48:42,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 01:48:42,760 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 01:48:42,760 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 01:48:42,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 01:48:42,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 01:48:42,762 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 01:48:42,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 01:48:42,763 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 01:48:42,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 01:48:42,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 01:48:42,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 01:48:42,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 01:48:42,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 01:48:42,764 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 01:48:42,765 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 01:48:42,765 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 01:48:42,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 01:48:42,765 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 01:48:42,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 01:48:42,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 01:48:42,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 01:48:42,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 01:48:42,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:48:42,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 01:48:42,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 01:48:42,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 01:48:42,775 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 01:48:42,775 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 01:48:42,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 01:48:42,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 01:48:42,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 01:48:42,775 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c929687e1048988919d423afa09e6828bbc6230 [2021-08-26 01:48:43,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 01:48:43,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 01:48:43,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 01:48:43,114 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 01:48:43,114 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 01:48:43,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0730b.c [2021-08-26 01:48:43,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/046ede083/c7bef652cf96436ba67574861cc89904/FLAG4a266948f [2021-08-26 01:48:43,631 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 01:48:43,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0730b.c [2021-08-26 01:48:43,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/046ede083/c7bef652cf96436ba67574861cc89904/FLAG4a266948f [2021-08-26 01:48:43,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/046ede083/c7bef652cf96436ba67574861cc89904 [2021-08-26 01:48:43,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 01:48:43,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 01:48:43,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 01:48:43,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 01:48:43,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 01:48:43,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:48:43" (1/1) ... [2021-08-26 01:48:43,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10209061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:43, skipping insertion in model container [2021-08-26 01:48:43,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:48:43" (1/1) ... [2021-08-26 01:48:43,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 01:48:43,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 01:48:43,860 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-newlib/float_req_bl_0730b.c[2069,2082] [2021-08-26 01:48:43,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:48:43,882 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 01:48:43,920 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-newlib/float_req_bl_0730b.c[2069,2082] [2021-08-26 01:48:43,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:48:43,974 INFO L208 MainTranslator]: Completed translation [2021-08-26 01:48:43,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:43 WrapperNode [2021-08-26 01:48:43,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 01:48:43,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 01:48:43,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 01:48:43,983 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 01:48:43,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:43" (1/1) ... [2021-08-26 01:48:44,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:43" (1/1) ... [2021-08-26 01:48:44,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 01:48:44,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 01:48:44,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 01:48:44,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 01:48:44,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:43" (1/1) ... [2021-08-26 01:48:44,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:43" (1/1) ... [2021-08-26 01:48:44,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:43" (1/1) ... [2021-08-26 01:48:44,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:43" (1/1) ... [2021-08-26 01:48:44,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:43" (1/1) ... [2021-08-26 01:48:44,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:43" (1/1) ... [2021-08-26 01:48:44,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:43" (1/1) ... [2021-08-26 01:48:44,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 01:48:44,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 01:48:44,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 01:48:44,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 01:48:44,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:43" (1/1) ... [2021-08-26 01:48:44,105 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:48:44,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:48:44,130 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 01:48:44,164 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 01:48:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 01:48:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 01:48:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-08-26 01:48:44,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-26 01:48:44,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 01:48:44,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 01:48:44,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-08-26 01:48:44,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-26 01:48:44,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 01:48:45,084 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 01:48:45,084 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-08-26 01:48:45,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:48:45 BoogieIcfgContainer [2021-08-26 01:48:45,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 01:48:45,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 01:48:45,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 01:48:45,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 01:48:45,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 01:48:43" (1/3) ... [2021-08-26 01:48:45,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a89a517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:48:45, skipping insertion in model container [2021-08-26 01:48:45,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:43" (2/3) ... [2021-08-26 01:48:45,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a89a517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:48:45, skipping insertion in model container [2021-08-26 01:48:45,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:48:45" (3/3) ... [2021-08-26 01:48:45,093 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730b.c [2021-08-26 01:48:45,098 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 01:48:45,099 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 01:48:45,146 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 01:48:45,155 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 01:48:45,156 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 01:48:45,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 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 01:48:45,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 01:48:45,177 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:48:45,178 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:48:45,178 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:48:45,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:48:45,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1903716510, now seen corresponding path program 1 times [2021-08-26 01:48:45,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:48:45,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500439920] [2021-08-26 01:48:45,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:48:45,199 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:48:45,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:48:45,202 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 01:48:45,247 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 01:48:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:48:45,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-26 01:48:45,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:48:45,481 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 01:48:45,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:48:45,527 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 01:48:45,528 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:48:45,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500439920] [2021-08-26 01:48:45,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500439920] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:48:45,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:48:45,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-26 01:48:45,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053806012] [2021-08-26 01:48:45,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 01:48:45,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:48:45,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 01:48:45,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:48:45,550 INFO L87 Difference]: Start difference. First operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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 01:48:45,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:48:45,569 INFO L93 Difference]: Finished difference Result 72 states and 112 transitions. [2021-08-26 01:48:45,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 01:48:45,571 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) Word has length 9 [2021-08-26 01:48:45,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:48:45,577 INFO L225 Difference]: With dead ends: 72 [2021-08-26 01:48:45,578 INFO L226 Difference]: Without dead ends: 34 [2021-08-26 01:48:45,581 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:48:45,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-26 01:48:45,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-08-26 01:48:45,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 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 01:48:45,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2021-08-26 01:48:45,614 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 9 [2021-08-26 01:48:45,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:48:45,614 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2021-08-26 01:48:45,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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 01:48:45,614 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2021-08-26 01:48:45,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 01:48:45,615 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:48:45,615 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:48:45,635 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 01:48:45,829 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 01:48:45,829 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:48:45,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:48:45,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1484634303, now seen corresponding path program 1 times [2021-08-26 01:48:45,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:48:45,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061836339] [2021-08-26 01:48:45,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:48:45,831 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:48:45,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:48:45,832 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 01:48:45,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-26 01:48:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:48:45,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-26 01:48:46,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:48:46,222 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 01:48:46,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:48:46,436 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 01:48:46,436 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:48:46,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061836339] [2021-08-26 01:48:46,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061836339] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:48:46,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:48:46,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-08-26 01:48:46,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878332209] [2021-08-26 01:48:46,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 01:48:46,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:48:46,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 01:48:46,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-26 01:48:46,440 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 01:48:46,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:48:46,549 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-08-26 01:48:46,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 01:48:46,561 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 10 [2021-08-26 01:48:46,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:48:46,562 INFO L225 Difference]: With dead ends: 43 [2021-08-26 01:48:46,562 INFO L226 Difference]: Without dead ends: 16 [2021-08-26 01:48:46,563 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 253.0ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-08-26 01:48:46,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-26 01:48:46,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-08-26 01:48:46,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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 01:48:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-08-26 01:48:46,566 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2021-08-26 01:48:46,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:48:46,567 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-08-26 01:48:46,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 01:48:46,567 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-08-26 01:48:46,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 01:48:46,568 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:48:46,568 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:48:46,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-26 01:48:46,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:48:46,780 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:48:46,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:48:46,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1245587968, now seen corresponding path program 1 times [2021-08-26 01:48:46,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:48:46,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219520832] [2021-08-26 01:48:46,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:48:46,781 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:48:46,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:48:46,783 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 01:48:46,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-26 01:48:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:48:46,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 01:48:46,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:48:47,061 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 01:48:47,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:48:47,189 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 01:48:47,190 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:48:47,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219520832] [2021-08-26 01:48:47,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219520832] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:48:47,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:48:47,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-08-26 01:48:47,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909002423] [2021-08-26 01:48:47,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 01:48:47,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:48:47,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 01:48:47,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-26 01:48:47,191 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 01:48:47,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:48:47,284 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-08-26 01:48:47,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 01:48:47,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 11 [2021-08-26 01:48:47,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:48:47,285 INFO L225 Difference]: With dead ends: 19 [2021-08-26 01:48:47,285 INFO L226 Difference]: Without dead ends: 16 [2021-08-26 01:48:47,285 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 128.3ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-26 01:48:47,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-26 01:48:47,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-08-26 01:48:47,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0) internal successors, (15), 15 states have internal predecessors, (15), 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 01:48:47,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2021-08-26 01:48:47,288 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 11 [2021-08-26 01:48:47,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:48:47,289 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2021-08-26 01:48:47,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 01:48:47,289 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2021-08-26 01:48:47,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 01:48:47,289 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:48:47,289 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:48:47,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-26 01:48:47,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:48:47,501 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:48:47,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:48:47,501 INFO L82 PathProgramCache]: Analyzing trace with hash 336653141, now seen corresponding path program 1 times [2021-08-26 01:48:47,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:48:47,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072727524] [2021-08-26 01:48:47,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:48:47,502 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:48:47,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:48:47,503 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 01:48:47,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-26 01:48:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:48:47,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-26 01:48:47,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:48:47,921 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 01:48:47,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:48:48,462 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 01:48:48,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:48:48,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072727524] [2021-08-26 01:48:48,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072727524] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:48:48,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:48:48,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2021-08-26 01:48:48,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613171833] [2021-08-26 01:48:48,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-26 01:48:48,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:48:48,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-26 01:48:48,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-08-26 01:48:48,464 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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 01:48:48,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:48:48,789 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-08-26 01:48:48,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 01:48:48,791 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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 15 [2021-08-26 01:48:48,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:48:48,791 INFO L225 Difference]: With dead ends: 16 [2021-08-26 01:48:48,791 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 01:48:48,792 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 617.5ms TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-08-26 01:48:48,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 01:48:48,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 01:48:48,792 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 01:48:48,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 01:48:48,792 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-08-26 01:48:48,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:48:48,793 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 01:48:48,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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 01:48:48,793 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 01:48:48,793 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 01:48:48,795 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:48:48,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-26 01:48:49,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:48:49,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 01:48:49,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:48:49,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:48:49,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:48:49,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:48:49,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:48:49,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:48:49,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:48:49,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:48:49,188 INFO L853 garLoopResultBuilder]: At program point L52-2(lines 52 61) the Hoare annotation is: false [2021-08-26 01:48:49,188 INFO L857 garLoopResultBuilder]: For program point L52-3(lines 16 81) no Hoare annotation was computed. [2021-08-26 01:48:49,188 INFO L857 garLoopResultBuilder]: For program point L44(lines 44 45) no Hoare annotation was computed. [2021-08-26 01:48:49,188 INFO L857 garLoopResultBuilder]: For program point L44-2(lines 44 45) no Hoare annotation was computed. [2021-08-26 01:48:49,189 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 01:48:49,189 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 01:48:49,189 INFO L857 garLoopResultBuilder]: For program point L28(lines 28 29) no Hoare annotation was computed. [2021-08-26 01:48:49,189 INFO L857 garLoopResultBuilder]: For program point L86-1(lines 86 90) no Hoare annotation was computed. [2021-08-26 01:48:49,189 INFO L853 garLoopResultBuilder]: At program point L86-2(lines 86 90) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short13| (= |ULTIMATE.start___ieee754_sqrtf_#res| (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= ULTIMATE.start___ieee754_sqrtf_~x (_ +zero 8 24)) (exists ((ULTIMATE.start___ieee754_sqrtf_~ix~0 (_ BitVec 32))) (and (= ULTIMATE.start___ieee754_sqrtf_~hx~0 (bvand (_ bv2147483647 32) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (_ +zero 8 24)))) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x)) [2021-08-26 01:48:49,189 INFO L857 garLoopResultBuilder]: For program point L86-3(lines 86 90) no Hoare annotation was computed. [2021-08-26 01:48:49,189 INFO L857 garLoopResultBuilder]: For program point L37(lines 37 41) no Hoare annotation was computed. [2021-08-26 01:48:49,189 INFO L857 garLoopResultBuilder]: For program point L37-2(lines 37 41) no Hoare annotation was computed. [2021-08-26 01:48:49,189 INFO L857 garLoopResultBuilder]: For program point L54(lines 54 58) no Hoare annotation was computed. [2021-08-26 01:48:49,190 INFO L857 garLoopResultBuilder]: For program point L21-1(lines 21 25) no Hoare annotation was computed. [2021-08-26 01:48:49,190 INFO L857 garLoopResultBuilder]: For program point L54-2(lines 54 58) no Hoare annotation was computed. [2021-08-26 01:48:49,190 INFO L853 garLoopResultBuilder]: At program point L21-2(lines 21 25) the Hoare annotation is: (= ULTIMATE.start___ieee754_sqrtf_~x (_ +zero 8 24)) [2021-08-26 01:48:49,190 INFO L857 garLoopResultBuilder]: For program point L21-3(lines 21 25) no Hoare annotation was computed. [2021-08-26 01:48:49,190 INFO L860 garLoopResultBuilder]: At program point L112(lines 95 113) the Hoare annotation is: true [2021-08-26 01:48:49,190 INFO L857 garLoopResultBuilder]: For program point L38-2(lines 38 39) no Hoare annotation was computed. [2021-08-26 01:48:49,190 INFO L853 garLoopResultBuilder]: At program point L38-3(lines 38 39) the Hoare annotation is: false [2021-08-26 01:48:49,190 INFO L857 garLoopResultBuilder]: For program point L38-4(lines 38 39) no Hoare annotation was computed. [2021-08-26 01:48:49,190 INFO L857 garLoopResultBuilder]: For program point L63(lines 63 72) no Hoare annotation was computed. [2021-08-26 01:48:49,190 INFO L853 garLoopResultBuilder]: At program point L80(lines 16 81) the Hoare annotation is: (and (= |ULTIMATE.start___ieee754_sqrtf_#res| (_ +zero 8 24)) (= ULTIMATE.start___ieee754_sqrtf_~x (_ +zero 8 24)) (exists ((ULTIMATE.start___ieee754_sqrtf_~ix~0 (_ BitVec 32))) (and (= ULTIMATE.start___ieee754_sqrtf_~hx~0 (bvand (_ bv2147483647 32) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (_ +zero 8 24)))) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (_ +zero 8 24))) [2021-08-26 01:48:49,191 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2021-08-26 01:48:49,191 INFO L857 garLoopResultBuilder]: For program point L65(lines 65 71) no Hoare annotation was computed. [2021-08-26 01:48:49,191 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 01:48:49,191 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 108) no Hoare annotation was computed. [2021-08-26 01:48:49,191 INFO L857 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2021-08-26 01:48:49,191 INFO L857 garLoopResultBuilder]: For program point L107-2(lines 107 110) no Hoare annotation was computed. [2021-08-26 01:48:49,191 INFO L857 garLoopResultBuilder]: For program point L33(lines 33 34) no Hoare annotation was computed. [2021-08-26 01:48:49,191 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 01:48:49,191 INFO L857 garLoopResultBuilder]: For program point L108(line 108) no Hoare annotation was computed. [2021-08-26 01:48:49,191 INFO L857 garLoopResultBuilder]: For program point L75-1(lines 75 79) no Hoare annotation was computed. [2021-08-26 01:48:49,192 INFO L853 garLoopResultBuilder]: At program point L75-2(lines 75 79) the Hoare annotation is: false [2021-08-26 01:48:49,192 INFO L857 garLoopResultBuilder]: For program point L75-3(lines 75 79) no Hoare annotation was computed. [2021-08-26 01:48:49,192 INFO L857 garLoopResultBuilder]: For program point L67(lines 67 70) no Hoare annotation was computed. [2021-08-26 01:48:49,192 INFO L853 garLoopResultBuilder]: At program point L92(lines 83 93) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short13| (= |ULTIMATE.start___ieee754_sqrtf_#res| (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~0) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~0) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~0))) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= ULTIMATE.start___ieee754_sqrtf_~x (_ +zero 8 24)) (exists ((ULTIMATE.start___ieee754_sqrtf_~ix~0 (_ BitVec 32))) (and (= ULTIMATE.start___ieee754_sqrtf_~hx~0 (bvand (_ bv2147483647 32) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (_ +zero 8 24)))) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32))) [2021-08-26 01:48:49,196 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 01:48:49,201 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,202 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,202 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,202 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,208 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,208 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,208 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,208 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,209 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,210 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,210 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,210 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,210 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,210 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,210 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,211 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,211 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,211 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,211 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,211 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,212 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,212 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,212 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,212 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 01:48:49 BoogieIcfgContainer [2021-08-26 01:48:49,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 01:48:49,213 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 01:48:49,213 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 01:48:49,213 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 01:48:49,214 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:48:45" (3/4) ... [2021-08-26 01:48:49,216 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 01:48:49,226 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-08-26 01:48:49,226 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-08-26 01:48:49,226 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 01:48:49,226 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 01:48:49,246 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\result == ~Pluszero~LONGDOUBLE() && x == ~Pluszero~LONGDOUBLE()) && (\exists ULTIMATE.start___ieee754_sqrtf_~ix~0 : bv32 :: hx == ~bvand32(2147483647bv32, ULTIMATE.start___ieee754_sqrtf_~ix~0) && ~fp~LONGDOUBLE(ULTIMATE.start___ieee754_sqrtf_~ix~0[31:31], ULTIMATE.start___ieee754_sqrtf_~ix~0[30:23], ULTIMATE.start___ieee754_sqrtf_~ix~0[22:0]) == ~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~Pluszero~LONGDOUBLE() [2021-08-26 01:48:49,247 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((aux-res == 0.0f && __signbit_float(res) == 0-aux && \result == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && (\exists ULTIMATE.start___ieee754_sqrtf_~ix~0 : bv32 :: hx == ~bvand32(2147483647bv32, ULTIMATE.start___ieee754_sqrtf_~ix~0) && ~fp~LONGDOUBLE(ULTIMATE.start___ieee754_sqrtf_~ix~0[31:31], ULTIMATE.start___ieee754_sqrtf_~ix~0[30:23], ULTIMATE.start___ieee754_sqrtf_~ix~0[22:0]) == ~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x [2021-08-26 01:48:49,247 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((aux-res == 0.0f && __signbit_float(res) == 0-aux && \result == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && (\exists ULTIMATE.start___ieee754_sqrtf_~ix~0 : bv32 :: hx == ~bvand32(2147483647bv32, ULTIMATE.start___ieee754_sqrtf_~ix~0) && ~fp~LONGDOUBLE(ULTIMATE.start___ieee754_sqrtf_~ix~0[31:31], ULTIMATE.start___ieee754_sqrtf_~ix~0[30:23], ULTIMATE.start___ieee754_sqrtf_~ix~0[22:0]) == ~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32 [2021-08-26 01:48:49,262 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 01:48:49,262 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 01:48:49,264 INFO L168 Benchmark]: Toolchain (without parser) took 5598.66 ms. Allocated memory was 56.6 MB in the beginning and 94.4 MB in the end (delta: 37.7 MB). Free memory was 35.5 MB in the beginning and 42.9 MB in the end (delta: -7.4 MB). Peak memory consumption was 29.0 MB. Max. memory is 16.1 GB. [2021-08-26 01:48:49,264 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 38.7 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:48:49,264 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.30 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 35.3 MB in the beginning and 61.0 MB in the end (delta: -25.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 01:48:49,264 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.00 ms. Allocated memory is still 77.6 MB. Free memory was 61.0 MB in the beginning and 59.0 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:48:49,265 INFO L168 Benchmark]: Boogie Preprocessor took 56.83 ms. Allocated memory is still 77.6 MB. Free memory was 59.0 MB in the beginning and 57.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:48:49,265 INFO L168 Benchmark]: RCFGBuilder took 989.12 ms. Allocated memory is still 77.6 MB. Free memory was 57.4 MB in the beginning and 55.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2021-08-26 01:48:49,265 INFO L168 Benchmark]: TraceAbstraction took 4124.72 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 54.8 MB in the beginning and 46.7 MB in the end (delta: 8.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. [2021-08-26 01:48:49,266 INFO L168 Benchmark]: Witness Printer took 49.13 ms. Allocated memory is still 94.4 MB. Free memory was 46.7 MB in the beginning and 42.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 01:48:49,267 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 38.7 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.30 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 35.3 MB in the beginning and 61.0 MB in the end (delta: -25.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.00 ms. Allocated memory is still 77.6 MB. Free memory was 61.0 MB in the beginning and 59.0 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.83 ms. Allocated memory is still 77.6 MB. Free memory was 59.0 MB in the beginning and 57.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 989.12 ms. Allocated memory is still 77.6 MB. Free memory was 57.4 MB in the beginning and 55.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4124.72 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 54.8 MB in the beginning and 46.7 MB in the end (delta: 8.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. * Witness Printer took 49.13 ms. Allocated memory is still 94.4 MB. Free memory was 46.7 MB in the beginning and 42.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] * 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: 108]: 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, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4051.4ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 11.0ms, AutomataDifference: 591.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 182.0ms, InitialAbstractionConstructionTime: 11.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 77 SDtfs, 101 SDslu, 61 SDs, 0 SdLazy, 56 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 158.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 999.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27.9ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 13 NumberOfFragments, 129 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 41.4ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 134.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 62.7ms SsaConstructionTime, 302.9ms SatisfiabilityAnalysisTime, 1751.4ms InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 82 ConstructedInterpolants, 10 QuantifiedInterpolants, 337 SizeOfPredicates, 22 NumberOfNonLiveVariables, 184 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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: 83]: Loop Invariant [2021-08-26 01:48:49,272 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,272 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,273 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,273 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,273 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,273 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,273 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,274 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] Derived loop invariant: (((((((aux-res == 0.0f && __signbit_float(res) == 0-aux && \result == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && (\exists ULTIMATE.start___ieee754_sqrtf_~ix~0 : bv32 :: hx == ~bvand32(2147483647bv32, ULTIMATE.start___ieee754_sqrtf_~ix~0) && ~fp~LONGDOUBLE(ULTIMATE.start___ieee754_sqrtf_~ix~0[31:31], ULTIMATE.start___ieee754_sqrtf_~ix~0[30:23], ULTIMATE.start___ieee754_sqrtf_~ix~0[22:0]) == ~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 95]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 86]: Loop Invariant [2021-08-26 01:48:49,274 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,274 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,275 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,275 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,275 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,275 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,275 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,275 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] Derived loop invariant: (((((aux-res == 0.0f && __signbit_float(res) == 0-aux && \result == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && (\exists ULTIMATE.start___ieee754_sqrtf_~ix~0 : bv32 :: hx == ~bvand32(2147483647bv32, ULTIMATE.start___ieee754_sqrtf_~ix~0) && ~fp~LONGDOUBLE(ULTIMATE.start___ieee754_sqrtf_~ix~0[31:31], ULTIMATE.start___ieee754_sqrtf_~ix~0[30:23], ULTIMATE.start___ieee754_sqrtf_~ix~0[22:0]) == ~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 75]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant [2021-08-26 01:48:49,276 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,276 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,276 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,276 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,276 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,276 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,276 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2021-08-26 01:48:49,277 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] Derived loop invariant: ((\result == ~Pluszero~LONGDOUBLE() && x == ~Pluszero~LONGDOUBLE()) && (\exists ULTIMATE.start___ieee754_sqrtf_~ix~0 : bv32 :: hx == ~bvand32(2147483647bv32, ULTIMATE.start___ieee754_sqrtf_~ix~0) && ~fp~LONGDOUBLE(ULTIMATE.start___ieee754_sqrtf_~ix~0[31:31], ULTIMATE.start___ieee754_sqrtf_~ix~0[30:23], ULTIMATE.start___ieee754_sqrtf_~ix~0[22:0]) == ~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~Pluszero~LONGDOUBLE() RESULT: Ultimate proved your program to be correct! [2021-08-26 01:48:49,325 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...