./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1071.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_1071.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 55d78fe353fd0931b2d447fd45670a80ea73f6385110d8a7ff7bce3171c541bd --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:57:10,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:57:10,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:57:10,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:57:10,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:57:10,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:57:10,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:57:10,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:57:10,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:57:10,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:57:10,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:57:10,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:57:10,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:57:10,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:57:10,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:57:10,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:57:10,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:57:10,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:57:10,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:57:10,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:57:10,451 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:57:10,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:57:10,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:57:10,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:57:10,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:57:10,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:57:10,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:57:10,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:57:10,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:57:10,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:57:10,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:57:10,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:57:10,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:57:10,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:57:10,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:57:10,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:57:10,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:57:10,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:57:10,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:57:10,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:57:10,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:57:10,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:57:10,469 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 01:57:10,493 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:57:10,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:57:10,495 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:57:10,495 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:57:10,496 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:57:10,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:57:10,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:57:10,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:57:10,497 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:57:10,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:57:10,498 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:57:10,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 01:57:10,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:57:10,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:57:10,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:57:10,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:57:10,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:57:10,499 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:57:10,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:57:10,500 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:57:10,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:57:10,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:57:10,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:57:10,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:57:10,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:57:10,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:57:10,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:57:10,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:57:10,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 01:57:10,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 01:57:10,502 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:57:10,502 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:57:10,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:57:10,503 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55d78fe353fd0931b2d447fd45670a80ea73f6385110d8a7ff7bce3171c541bd [2022-07-21 01:57:10,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:57:10,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:57:10,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:57:10,840 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:57:10,841 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:57:10,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2022-07-21 01:57:10,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d230413b/c36199e10ab84f09a5ed3260c6d4d04c/FLAG8216b2c32 [2022-07-21 01:57:11,367 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:57:11,368 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2022-07-21 01:57:11,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d230413b/c36199e10ab84f09a5ed3260c6d4d04c/FLAG8216b2c32 [2022-07-21 01:57:11,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d230413b/c36199e10ab84f09a5ed3260c6d4d04c [2022-07-21 01:57:11,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:57:11,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:57:11,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:57:11,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:57:11,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:57:11,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:57:11" (1/1) ... [2022-07-21 01:57:11,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20283e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:11, skipping insertion in model container [2022-07-21 01:57:11,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:57:11" (1/1) ... [2022-07-21 01:57:11,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:57:11,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:57:12,039 WARN L230 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_1071.c[1429,1442] [2022-07-21 01:57:12,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:57:12,048 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:57:12,104 WARN L230 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_1071.c[1429,1442] [2022-07-21 01:57:12,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:57:12,120 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:57:12,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:12 WrapperNode [2022-07-21 01:57:12,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:57:12,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:57:12,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:57:12,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:57:12,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:12" (1/1) ... [2022-07-21 01:57:12,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:12" (1/1) ... [2022-07-21 01:57:12,168 INFO L137 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 85 [2022-07-21 01:57:12,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:57:12,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:57:12,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:57:12,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:57:12,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:12" (1/1) ... [2022-07-21 01:57:12,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:12" (1/1) ... [2022-07-21 01:57:12,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:12" (1/1) ... [2022-07-21 01:57:12,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:12" (1/1) ... [2022-07-21 01:57:12,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:12" (1/1) ... [2022-07-21 01:57:12,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:12" (1/1) ... [2022-07-21 01:57:12,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:12" (1/1) ... [2022-07-21 01:57:12,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:57:12,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:57:12,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:57:12,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:57:12,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:12" (1/1) ... [2022-07-21 01:57:12,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:57:12,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:57:12,256 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) [2022-07-21 01:57:12,282 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 [2022-07-21 01:57:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:57:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 01:57:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 01:57:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-21 01:57:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 01:57:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-07-21 01:57:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:57:12,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:57:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 01:57:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 01:57:12,395 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:57:12,396 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:57:12,626 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:57:12,631 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:57:12,631 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-21 01:57:12,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:57:12 BoogieIcfgContainer [2022-07-21 01:57:12,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:57:12,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:57:12,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:57:12,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:57:12,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:57:11" (1/3) ... [2022-07-21 01:57:12,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f1fbce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:57:12, skipping insertion in model container [2022-07-21 01:57:12,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:12" (2/3) ... [2022-07-21 01:57:12,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f1fbce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:57:12, skipping insertion in model container [2022-07-21 01:57:12,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:57:12" (3/3) ... [2022-07-21 01:57:12,640 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2022-07-21 01:57:12,652 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:57:12,653 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:57:12,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:57:12,719 INFO L357 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, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1faae8df, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@542360ea [2022-07-21 01:57:12,720 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:57:12,730 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 24 states have internal predecessors, (38), 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) [2022-07-21 01:57:12,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-21 01:57:12,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:57:12,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:57:12,751 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:57:12,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:57:12,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1236241859, now seen corresponding path program 1 times [2022-07-21 01:57:12,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:57:12,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636505423] [2022-07-21 01:57:12,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:57:12,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:57:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:57:12,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:57:12,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:57:12,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636505423] [2022-07-21 01:57:12,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636505423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:57:12,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:57:12,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:57:12,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819772193] [2022-07-21 01:57:12,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:57:12,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:57:12,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:57:12,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:57:12,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:57:12,901 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 24 states have internal predecessors, (38), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:57:12,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:57:12,915 INFO L93 Difference]: Finished difference Result 48 states and 74 transitions. [2022-07-21 01:57:12,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:57:12,917 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-21 01:57:12,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:57:12,924 INFO L225 Difference]: With dead ends: 48 [2022-07-21 01:57:12,924 INFO L226 Difference]: Without dead ends: 22 [2022-07-21 01:57:12,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:57:12,929 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:57:12,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:57:12,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-21 01:57:12,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-21 01:57:12,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 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) [2022-07-21 01:57:12,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-07-21 01:57:12,957 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 11 [2022-07-21 01:57:12,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:57:12,958 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-07-21 01:57:12,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:57:12,958 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-07-21 01:57:12,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-21 01:57:12,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:57:12,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:57:12,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 01:57:12,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:57:12,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:57:12,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1856162784, now seen corresponding path program 1 times [2022-07-21 01:57:12,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:57:12,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084151660] [2022-07-21 01:57:12,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:57:12,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:57:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:57:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:57:13,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:57:13,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084151660] [2022-07-21 01:57:13,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084151660] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:57:13,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:57:13,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 01:57:13,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926612378] [2022-07-21 01:57:13,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:57:13,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 01:57:13,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:57:13,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 01:57:13,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:57:13,067 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-07-21 01:57:13,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:57:13,138 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2022-07-21 01:57:13,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 01:57:13,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2022-07-21 01:57:13,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:57:13,141 INFO L225 Difference]: With dead ends: 42 [2022-07-21 01:57:13,141 INFO L226 Difference]: Without dead ends: 33 [2022-07-21 01:57:13,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 01:57:13,150 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 19 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:57:13,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 58 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:57:13,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-07-21 01:57:13,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2022-07-21 01:57:13,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 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) [2022-07-21 01:57:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-07-21 01:57:13,160 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 12 [2022-07-21 01:57:13,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:57:13,162 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-07-21 01:57:13,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-07-21 01:57:13,163 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-07-21 01:57:13,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-21 01:57:13,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:57:13,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:57:13,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 01:57:13,165 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:57:13,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:57:13,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1128613167, now seen corresponding path program 1 times [2022-07-21 01:57:13,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:57:13,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394276451] [2022-07-21 01:57:13,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:57:13,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:57:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:57:13,221 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 01:57:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:57:13,289 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 01:57:13,290 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 01:57:13,291 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 01:57:13,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 01:57:13,296 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-21 01:57:13,301 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 01:57:13,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:57:13 BoogieIcfgContainer [2022-07-21 01:57:13,334 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 01:57:13,335 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 01:57:13,335 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 01:57:13,335 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 01:57:13,336 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:57:12" (3/4) ... [2022-07-21 01:57:13,338 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 01:57:13,339 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 01:57:13,339 INFO L158 Benchmark]: Toolchain (without parser) took 1465.08ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 39.8MB in the beginning and 34.3MB in the end (delta: 5.5MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2022-07-21 01:57:13,339 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 60.8MB. Free memory is still 43.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:57:13,340 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.99ms. Allocated memory is still 60.8MB. Free memory was 39.6MB in the beginning and 44.3MB in the end (delta: -4.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 01:57:13,342 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.83ms. Allocated memory is still 60.8MB. Free memory was 44.1MB in the beginning and 41.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:57:13,344 INFO L158 Benchmark]: Boogie Preprocessor took 47.03ms. Allocated memory is still 60.8MB. Free memory was 41.6MB in the beginning and 39.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:57:13,345 INFO L158 Benchmark]: RCFGBuilder took 411.79ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 39.7MB in the beginning and 50.6MB in the end (delta: -10.8MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2022-07-21 01:57:13,345 INFO L158 Benchmark]: TraceAbstraction took 699.63ms. Allocated memory is still 73.4MB. Free memory was 50.0MB in the beginning and 34.6MB in the end (delta: 15.4MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2022-07-21 01:57:13,350 INFO L158 Benchmark]: Witness Printer took 3.60ms. Allocated memory is still 73.4MB. Free memory was 34.6MB in the beginning and 34.3MB in the end (delta: 342.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:57:13,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 60.8MB. Free memory is still 43.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.99ms. Allocated memory is still 60.8MB. Free memory was 39.6MB in the beginning and 44.3MB in the end (delta: -4.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.83ms. Allocated memory is still 60.8MB. Free memory was 44.1MB in the beginning and 41.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.03ms. Allocated memory is still 60.8MB. Free memory was 41.6MB in the beginning and 39.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 411.79ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 39.7MB in the beginning and 50.6MB in the end (delta: -10.8MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * TraceAbstraction took 699.63ms. Allocated memory is still 73.4MB. Free memory was 50.0MB in the beginning and 34.6MB in the end (delta: 15.4MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. * Witness Printer took 3.60ms. Allocated memory is still 73.4MB. Free memory was 34.6MB in the beginning and 34.3MB in the end (delta: 342.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 59]: 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 46, overapproximation of someBinaryArithmeticFLOAToperation at line 54, overapproximation of bitwiseAnd at line 22. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] CALL, EXPR trunc_float(x) [L15] __int32_t signbit, w, exponent_less_127; VAL [\old(x)=49, x=49] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L21] signbit = w & 0x80000000 VAL [\old(x)=49, signbit=0, w=0, x=49] [L22] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=49, exponent_less_127=-127, signbit=0, w=0, x=49] [L23] COND TRUE exponent_less_127 < 23 VAL [\old(x)=49, exponent_less_127=-127, signbit=0, w=0, x=49] [L24] COND TRUE exponent_less_127 < 0 VAL [\old(x)=49, exponent_less_127=-127, signbit=0, w=0, x=49] [L27] ieee_float_shape_type sf_u; [L28] sf_u.word = (signbit) [L29] EXPR sf_u.value [L29] (x) = sf_u.value [L42] return x; VAL [\old(x)=49, \result=50, exponent_less_127=-127, signbit=0, w=0, x=50] [L55] RET, EXPR trunc_float(x) [L55] float res = trunc_float(x); [L58] CALL, EXPR isnan_float(res) [L46] return x != x; VAL [\old(x)=50, \result=0, x=50] [L58] RET, EXPR isnan_float(res) [L58] COND TRUE !isnan_float(res) [L59] reach_error() VAL [res=50, x=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 87 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 52 mSDtfsCounter, 19 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 31 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-21 01:57:13,398 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_1071.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 55d78fe353fd0931b2d447fd45670a80ea73f6385110d8a7ff7bce3171c541bd --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:57:15,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:57:15,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:57:15,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:57:15,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:57:15,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:57:15,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:57:15,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:57:15,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:57:15,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:57:15,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:57:15,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:57:15,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:57:15,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:57:15,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:57:15,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:57:15,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:57:15,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:57:15,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:57:15,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:57:15,342 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:57:15,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:57:15,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:57:15,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:57:15,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:57:15,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:57:15,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:57:15,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:57:15,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:57:15,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:57:15,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:57:15,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:57:15,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:57:15,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:57:15,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:57:15,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:57:15,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:57:15,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:57:15,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:57:15,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:57:15,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:57:15,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:57:15,369 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 01:57:15,406 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:57:15,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:57:15,407 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:57:15,407 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:57:15,408 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:57:15,408 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:57:15,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:57:15,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:57:15,409 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:57:15,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:57:15,411 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:57:15,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:57:15,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:57:15,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:57:15,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:57:15,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:57:15,412 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 01:57:15,412 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 01:57:15,412 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 01:57:15,413 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:57:15,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:57:15,413 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:57:15,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:57:15,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:57:15,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:57:15,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:57:15,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:57:15,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:57:15,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:57:15,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:57:15,415 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 01:57:15,415 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 01:57:15,415 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:57:15,416 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:57:15,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:57:15,416 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 01:57:15,416 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55d78fe353fd0931b2d447fd45670a80ea73f6385110d8a7ff7bce3171c541bd [2022-07-21 01:57:15,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:57:15,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:57:15,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:57:15,779 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:57:15,780 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:57:15,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2022-07-21 01:57:15,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cbdf1c36/ec9c7183f3d64ae3b3ec821afe1496b9/FLAG272ce6e16 [2022-07-21 01:57:16,215 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:57:16,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2022-07-21 01:57:16,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cbdf1c36/ec9c7183f3d64ae3b3ec821afe1496b9/FLAG272ce6e16 [2022-07-21 01:57:16,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cbdf1c36/ec9c7183f3d64ae3b3ec821afe1496b9 [2022-07-21 01:57:16,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:57:16,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:57:16,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:57:16,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:57:16,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:57:16,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:57:16" (1/1) ... [2022-07-21 01:57:16,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3be732b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:16, skipping insertion in model container [2022-07-21 01:57:16,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:57:16" (1/1) ... [2022-07-21 01:57:16,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:57:16,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:57:16,443 WARN L230 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_1071.c[1429,1442] [2022-07-21 01:57:16,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:57:16,464 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:57:16,490 WARN L230 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_1071.c[1429,1442] [2022-07-21 01:57:16,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:57:16,526 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:57:16,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:16 WrapperNode [2022-07-21 01:57:16,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:57:16,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:57:16,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:57:16,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:57:16,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:16" (1/1) ... [2022-07-21 01:57:16,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:16" (1/1) ... [2022-07-21 01:57:16,575 INFO L137 Inliner]: procedures = 19, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2022-07-21 01:57:16,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:57:16,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:57:16,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:57:16,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:57:16,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:16" (1/1) ... [2022-07-21 01:57:16,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:16" (1/1) ... [2022-07-21 01:57:16,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:16" (1/1) ... [2022-07-21 01:57:16,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:16" (1/1) ... [2022-07-21 01:57:16,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:16" (1/1) ... [2022-07-21 01:57:16,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:16" (1/1) ... [2022-07-21 01:57:16,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:16" (1/1) ... [2022-07-21 01:57:16,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:57:16,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:57:16,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:57:16,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:57:16,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:16" (1/1) ... [2022-07-21 01:57:16,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:57:16,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:57:16,643 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) [2022-07-21 01:57:16,647 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 [2022-07-21 01:57:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:57:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 01:57:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 01:57:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-07-21 01:57:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 01:57:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:57:16,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:57:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-07-21 01:57:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 01:57:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 01:57:16,750 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:57:16,751 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:57:16,968 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:57:16,973 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:57:16,974 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-21 01:57:16,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:57:16 BoogieIcfgContainer [2022-07-21 01:57:16,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:57:16,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:57:16,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:57:16,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:57:16,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:57:16" (1/3) ... [2022-07-21 01:57:16,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ccf8104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:57:16, skipping insertion in model container [2022-07-21 01:57:16,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:57:16" (2/3) ... [2022-07-21 01:57:16,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ccf8104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:57:16, skipping insertion in model container [2022-07-21 01:57:16,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:57:16" (3/3) ... [2022-07-21 01:57:16,996 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2022-07-21 01:57:17,009 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:57:17,023 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:57:17,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:57:17,094 INFO L357 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, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2489d86, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5ab78c3e [2022-07-21 01:57:17,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:57:17,098 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 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) [2022-07-21 01:57:17,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-21 01:57:17,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:57:17,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:57:17,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:57:17,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:57:17,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1945097259, now seen corresponding path program 1 times [2022-07-21 01:57:17,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:57:17,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770348983] [2022-07-21 01:57:17,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:57:17,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:57:17,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:57:17,131 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) [2022-07-21 01:57:17,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 01:57:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:57:17,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 01:57:17,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:57:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:57:17,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:57:17,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:57:17,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770348983] [2022-07-21 01:57:17,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770348983] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:57:17,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:57:17,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:57:17,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161786199] [2022-07-21 01:57:17,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:57:17,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:57:17,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:57:17,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:57:17,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:57:17,299 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-07-21 01:57:17,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:57:17,314 INFO L93 Difference]: Finished difference Result 40 states and 58 transitions. [2022-07-21 01:57:17,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:57:17,315 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 [2022-07-21 01:57:17,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:57:17,321 INFO L225 Difference]: With dead ends: 40 [2022-07-21 01:57:17,321 INFO L226 Difference]: Without dead ends: 18 [2022-07-21 01:57:17,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:57:17,328 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:57:17,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:57:17,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-21 01:57:17,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-07-21 01:57:17,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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) [2022-07-21 01:57:17,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-07-21 01:57:17,363 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2022-07-21 01:57:17,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:57:17,364 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-07-21 01:57:17,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-07-21 01:57:17,365 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-07-21 01:57:17,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-21 01:57:17,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:57:17,365 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:57:17,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 01:57:17,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:57:17,577 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:57:17,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:57:17,578 INFO L85 PathProgramCache]: Analyzing trace with hash -390209938, now seen corresponding path program 1 times [2022-07-21 01:57:17,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:57:17,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931118518] [2022-07-21 01:57:17,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:57:17,583 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:57:17,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:57:17,585 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) [2022-07-21 01:57:17,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 01:57:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:57:17,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 01:57:17,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:57:17,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:57:17,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:57:17,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:57:17,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931118518] [2022-07-21 01:57:17,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931118518] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:57:17,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:57:17,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 01:57:17,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818287369] [2022-07-21 01:57:17,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:57:17,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 01:57:17,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:57:17,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 01:57:17,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:57:17,769 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:57:17,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:57:17,777 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-07-21 01:57:17,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 01:57:17,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-21 01:57:17,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:57:17,778 INFO L225 Difference]: With dead ends: 23 [2022-07-21 01:57:17,778 INFO L226 Difference]: Without dead ends: 18 [2022-07-21 01:57:17,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:57:17,780 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:57:17,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 8 Unchecked, 0.0s Time] [2022-07-21 01:57:17,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-21 01:57:17,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-07-21 01:57:17,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 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) [2022-07-21 01:57:17,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-07-21 01:57:17,785 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 11 [2022-07-21 01:57:17,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:57:17,785 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-07-21 01:57:17,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:57:17,787 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-07-21 01:57:17,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-21 01:57:17,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:57:17,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:57:17,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 01:57:17,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:57:17,997 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:57:17,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:57:17,999 INFO L85 PathProgramCache]: Analyzing trace with hash 843742638, now seen corresponding path program 1 times [2022-07-21 01:57:17,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:57:17,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62594394] [2022-07-21 01:57:17,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:57:18,000 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:57:18,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:57:18,001 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) [2022-07-21 01:57:18,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 01:57:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:57:18,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 01:57:18,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:57:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:57:18,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:57:18,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:57:18,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62594394] [2022-07-21 01:57:18,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62594394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:57:18,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:57:18,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 01:57:18,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913224993] [2022-07-21 01:57:18,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:57:18,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 01:57:18,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:57:18,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 01:57:18,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 01:57:18,210 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-07-21 01:57:18,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:57:18,243 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-07-21 01:57:18,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 01:57:18,244 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 12 [2022-07-21 01:57:18,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:57:18,245 INFO L225 Difference]: With dead ends: 24 [2022-07-21 01:57:18,245 INFO L226 Difference]: Without dead ends: 17 [2022-07-21 01:57:18,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 01:57:18,246 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:57:18,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 64 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 8 Unchecked, 0.0s Time] [2022-07-21 01:57:18,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-07-21 01:57:18,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-07-21 01:57:18,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 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) [2022-07-21 01:57:18,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-07-21 01:57:18,250 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 12 [2022-07-21 01:57:18,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:57:18,250 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-07-21 01:57:18,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-07-21 01:57:18,251 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-07-21 01:57:18,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-21 01:57:18,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:57:18,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:57:18,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 01:57:18,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:57:18,463 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:57:18,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:57:18,463 INFO L85 PathProgramCache]: Analyzing trace with hash -2105231138, now seen corresponding path program 1 times [2022-07-21 01:57:18,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:57:18,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431356377] [2022-07-21 01:57:18,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:57:18,464 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:57:18,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:57:18,465 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) [2022-07-21 01:57:18,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 01:57:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:57:18,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 01:57:18,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:57:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:57:18,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:57:18,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:57:18,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431356377] [2022-07-21 01:57:18,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431356377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:57:18,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:57:18,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 01:57:18,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619165658] [2022-07-21 01:57:18,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:57:18,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 01:57:18,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:57:18,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 01:57:18,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 01:57:18,619 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2022-07-21 01:57:18,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:57:18,621 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-07-21 01:57:18,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 01:57:18,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2022-07-21 01:57:18,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:57:18,621 INFO L225 Difference]: With dead ends: 17 [2022-07-21 01:57:18,621 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 01:57:18,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 01:57:18,622 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:57:18,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 4 Unchecked, 0.0s Time] [2022-07-21 01:57:18,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 01:57:18,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 01:57:18,624 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) [2022-07-21 01:57:18,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 01:57:18,624 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-07-21 01:57:18,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:57:18,624 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 01:57:18,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2022-07-21 01:57:18,624 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 01:57:18,624 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 01:57:18,627 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 01:57:18,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 01:57:18,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:57:18,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-21 01:57:18,854 INFO L899 garLoopResultBuilder]: For program point L23(lines 23 41) no Hoare annotation was computed. [2022-07-21 01:57:18,855 INFO L899 garLoopResultBuilder]: For program point L23-1(lines 23 41) no Hoare annotation was computed. [2022-07-21 01:57:18,855 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-21 01:57:18,855 INFO L899 garLoopResultBuilder]: For program point L32-1(lines 32 36) no Hoare annotation was computed. [2022-07-21 01:57:18,855 INFO L895 garLoopResultBuilder]: At program point L32-2(lines 32 36) the Hoare annotation is: false [2022-07-21 01:57:18,855 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-21 01:57:18,855 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-21 01:57:18,855 INFO L899 garLoopResultBuilder]: For program point L24(lines 24 37) no Hoare annotation was computed. [2022-07-21 01:57:18,855 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 59) no Hoare annotation was computed. [2022-07-21 01:57:18,856 INFO L899 garLoopResultBuilder]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2022-07-21 01:57:18,856 INFO L895 garLoopResultBuilder]: At program point L16-2(lines 16 20) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_trunc_float_~x#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) [2022-07-21 01:57:18,857 INFO L899 garLoopResultBuilder]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2022-07-21 01:57:18,857 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-21 01:57:18,857 INFO L899 garLoopResultBuilder]: For program point L58(lines 58 61) no Hoare annotation was computed. [2022-07-21 01:57:18,857 INFO L895 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|) [2022-07-21 01:57:18,857 INFO L895 garLoopResultBuilder]: At program point L42(lines 14 43) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_trunc_float_#res#1|)) [2022-07-21 01:57:18,857 INFO L902 garLoopResultBuilder]: At program point L63(lines 48 64) the Hoare annotation is: true [2022-07-21 01:57:18,857 INFO L899 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2022-07-21 01:57:18,857 INFO L899 garLoopResultBuilder]: For program point L26-1(lines 26 30) no Hoare annotation was computed. [2022-07-21 01:57:18,858 INFO L895 garLoopResultBuilder]: At program point L26-2(lines 26 30) the Hoare annotation is: false [2022-07-21 01:57:18,858 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 40) no Hoare annotation was computed. [2022-07-21 01:57:18,860 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-07-21 01:57:18,864 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 01:57:18,876 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-07-21 01:57:18,877 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-07-21 01:57:18,878 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-07-21 01:57:18,879 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-07-21 01:57:18,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:57:18 BoogieIcfgContainer [2022-07-21 01:57:18,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 01:57:18,880 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 01:57:18,881 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 01:57:18,881 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 01:57:18,881 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:57:16" (3/4) ... [2022-07-21 01:57:18,884 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 01:57:18,894 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-07-21 01:57:18,895 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-07-21 01:57:18,895 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 01:57:18,895 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 01:57:18,913 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2022-07-21 01:57:18,914 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) [2022-07-21 01:57:18,914 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: 1bv32 == \result [2022-07-21 01:57:18,922 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 01:57:18,923 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 01:57:18,923 INFO L158 Benchmark]: Toolchain (without parser) took 2683.04ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 32.0MB in the beginning and 31.7MB in the end (delta: 296.2kB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2022-07-21 01:57:18,923 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 54.5MB. Free memory was 35.8MB in the beginning and 35.8MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:57:18,924 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.47ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.8MB in the beginning and 49.9MB in the end (delta: -18.2MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2022-07-21 01:57:18,924 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.59ms. Allocated memory is still 67.1MB. Free memory was 49.8MB in the beginning and 48.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:57:18,924 INFO L158 Benchmark]: Boogie Preprocessor took 37.42ms. Allocated memory is still 67.1MB. Free memory was 48.2MB in the beginning and 46.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:57:18,925 INFO L158 Benchmark]: RCFGBuilder took 361.46ms. Allocated memory is still 67.1MB. Free memory was 46.6MB in the beginning and 35.3MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 01:57:18,925 INFO L158 Benchmark]: TraceAbstraction took 1889.28ms. Allocated memory is still 67.1MB. Free memory was 49.6MB in the beginning and 34.5MB in the end (delta: 15.2MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2022-07-21 01:57:18,925 INFO L158 Benchmark]: Witness Printer took 42.20ms. Allocated memory is still 67.1MB. Free memory was 34.5MB in the beginning and 31.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:57:18,927 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 54.5MB. Free memory was 35.8MB in the beginning and 35.8MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.47ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.8MB in the beginning and 49.9MB in the end (delta: -18.2MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.59ms. Allocated memory is still 67.1MB. Free memory was 49.8MB in the beginning and 48.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.42ms. Allocated memory is still 67.1MB. Free memory was 48.2MB in the beginning and 46.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 361.46ms. Allocated memory is still 67.1MB. Free memory was 46.6MB in the beginning and 35.3MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1889.28ms. Allocated memory is still 67.1MB. Free memory was 49.6MB in the beginning and 34.5MB in the end (delta: 15.2MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * Witness Printer took 42.20ms. Allocated memory is still 67.1MB. Free memory was 34.5MB in the beginning and 31.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 59]: 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, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 122 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 20 IncrementalHoareTripleChecker+Unchecked, 65 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 57 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 20 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 43 ConstructedInterpolants, 13 QuantifiedInterpolants, 165 SizeOfPredicates, 18 NumberOfNonLiveVariables, 172 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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: 32]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 1bv32 == \result - InvariantResult [Line: 16]: Loop Invariant [2022-07-21 01:57:18,935 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-07-21 01:57:18,935 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 14]: Loop Invariant [2022-07-21 01:57:18,936 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-07-21 01:57:18,936 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) RESULT: Ultimate proved your program to be correct! [2022-07-21 01:57:18,961 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE