./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0720.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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_0720.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 2d431936a29cc36080ed8e682b8710bc84852895ee04dfb24fab46f24aa96450 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 10:21:18,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 10:21:18,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 10:21:18,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 10:21:18,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 10:21:18,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 10:21:18,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 10:21:18,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 10:21:18,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 10:21:18,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 10:21:18,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 10:21:18,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 10:21:18,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 10:21:18,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 10:21:18,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 10:21:18,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 10:21:18,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 10:21:18,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 10:21:18,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 10:21:18,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 10:21:18,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 10:21:18,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 10:21:18,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 10:21:18,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 10:21:18,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 10:21:18,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 10:21:18,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 10:21:18,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 10:21:18,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 10:21:18,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 10:21:18,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 10:21:18,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 10:21:18,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 10:21:18,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 10:21:18,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 10:21:18,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 10:21:18,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 10:21:18,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 10:21:18,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 10:21:18,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 10:21:18,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 10:21:18,406 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 10:21:18,420 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 10:21:18,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 10:21:18,423 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 10:21:18,423 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 10:21:18,423 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 10:21:18,424 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 10:21:18,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 10:21:18,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 10:21:18,424 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 10:21:18,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 10:21:18,425 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 10:21:18,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 10:21:18,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 10:21:18,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 10:21:18,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 10:21:18,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 10:21:18,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 10:21:18,426 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 10:21:18,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 10:21:18,426 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 10:21:18,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 10:21:18,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 10:21:18,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 10:21:18,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 10:21:18,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:21:18,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 10:21:18,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 10:21:18,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 10:21:18,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 10:21:18,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 10:21:18,428 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 10:21:18,428 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 10:21:18,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 10:21:18,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 10:21:18,429 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d431936a29cc36080ed8e682b8710bc84852895ee04dfb24fab46f24aa96450 [2021-12-22 10:21:18,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 10:21:18,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 10:21:18,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 10:21:18,612 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 10:21:18,622 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 10:21:18,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0720.c [2021-12-22 10:21:18,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be2fb65ea/4d2f546c74d6402d90f65a8d3ea9e64c/FLAGb64ae96ef [2021-12-22 10:21:18,986 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 10:21:18,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0720.c [2021-12-22 10:21:18,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be2fb65ea/4d2f546c74d6402d90f65a8d3ea9e64c/FLAGb64ae96ef [2021-12-22 10:21:18,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be2fb65ea/4d2f546c74d6402d90f65a8d3ea9e64c [2021-12-22 10:21:18,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 10:21:19,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 10:21:19,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 10:21:19,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 10:21:19,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 10:21:19,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:21:18" (1/1) ... [2021-12-22 10:21:19,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4491b1d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:19, skipping insertion in model container [2021-12-22 10:21:19,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:21:18" (1/1) ... [2021-12-22 10:21:19,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 10:21:19,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 10:21:19,191 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_0720.c[1929,1942] [2021-12-22 10:21:19,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:21:19,201 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 10:21:19,230 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_0720.c[1929,1942] [2021-12-22 10:21:19,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:21:19,241 INFO L208 MainTranslator]: Completed translation [2021-12-22 10:21:19,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:19 WrapperNode [2021-12-22 10:21:19,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 10:21:19,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 10:21:19,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 10:21:19,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 10:21:19,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:19" (1/1) ... [2021-12-22 10:21:19,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:19" (1/1) ... [2021-12-22 10:21:19,281 INFO L137 Inliner]: procedures = 17, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 114 [2021-12-22 10:21:19,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 10:21:19,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 10:21:19,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 10:21:19,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 10:21:19,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:19" (1/1) ... [2021-12-22 10:21:19,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:19" (1/1) ... [2021-12-22 10:21:19,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:19" (1/1) ... [2021-12-22 10:21:19,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:19" (1/1) ... [2021-12-22 10:21:19,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:19" (1/1) ... [2021-12-22 10:21:19,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:19" (1/1) ... [2021-12-22 10:21:19,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:19" (1/1) ... [2021-12-22 10:21:19,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 10:21:19,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 10:21:19,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 10:21:19,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 10:21:19,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:19" (1/1) ... [2021-12-22 10:21:19,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:21:19,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:21:19,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 10:21:19,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 10:21:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 10:21:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 10:21:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 10:21:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-22 10:21:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 10:21:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-22 10:21:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 10:21:19,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 10:21:19,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 10:21:19,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 10:21:19,511 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 10:21:19,512 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 10:21:19,630 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 10:21:19,634 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 10:21:19,635 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-22 10:21:19,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:21:19 BoogieIcfgContainer [2021-12-22 10:21:19,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 10:21:19,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 10:21:19,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 10:21:19,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 10:21:19,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:21:18" (1/3) ... [2021-12-22 10:21:19,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35743bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:21:19, skipping insertion in model container [2021-12-22 10:21:19,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:19" (2/3) ... [2021-12-22 10:21:19,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35743bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:21:19, skipping insertion in model container [2021-12-22 10:21:19,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:21:19" (3/3) ... [2021-12-22 10:21:19,651 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0720.c [2021-12-22 10:21:19,654 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 10:21:19,655 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 10:21:19,687 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 10:21:19,692 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 10:21:19,692 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 10:21:19,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:21:19,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 10:21:19,708 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:21:19,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:21:19,709 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:21:19,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:21:19,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1903734416, now seen corresponding path program 1 times [2021-12-22 10:21:19,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:21:19,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559137718] [2021-12-22 10:21:19,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:21:19,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:21:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:21:19,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:21:19,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 10:21:19,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559137718] [2021-12-22 10:21:19,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559137718] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:21:19,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:21:19,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 10:21:19,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79154201] [2021-12-22 10:21:19,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:21:19,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 10:21:19,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 10:21:19,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 10:21:19,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 10:21:19,846 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:21:19,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:21:19,862 INFO L93 Difference]: Finished difference Result 64 states and 98 transitions. [2021-12-22 10:21:19,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 10:21:19,864 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-22 10:21:19,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:21:19,870 INFO L225 Difference]: With dead ends: 64 [2021-12-22 10:21:19,870 INFO L226 Difference]: Without dead ends: 30 [2021-12-22 10:21:19,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 10:21:19,881 INFO L933 BasicCegarLoop]: 43 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, 43 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 [2021-12-22 10:21:19,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 10:21:19,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-22 10:21:19,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-12-22 10:21:19,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:21:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2021-12-22 10:21:19,909 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 9 [2021-12-22 10:21:19,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:21:19,910 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2021-12-22 10:21:19,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:21:19,910 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2021-12-22 10:21:19,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-22 10:21:19,911 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:21:19,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:21:19,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 10:21:19,911 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:21:19,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:21:19,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1484616397, now seen corresponding path program 1 times [2021-12-22 10:21:19,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:21:19,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905144438] [2021-12-22 10:21:19,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:21:19,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:21:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 10:21:19,982 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 10:21:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 10:21:20,036 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 10:21:20,037 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 10:21:20,039 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 10:21:20,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 10:21:20,044 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-22 10:21:20,046 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 10:21:20,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 10:21:20 BoogieIcfgContainer [2021-12-22 10:21:20,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 10:21:20,070 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 10:21:20,070 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 10:21:20,070 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 10:21:20,071 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:21:19" (3/4) ... [2021-12-22 10:21:20,072 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-22 10:21:20,073 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 10:21:20,073 INFO L158 Benchmark]: Toolchain (without parser) took 1072.94ms. Allocated memory is still 121.6MB. Free memory was 95.3MB in the beginning and 94.8MB in the end (delta: 485.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:21:20,074 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 81.8MB. Free memory was 39.1MB in the beginning and 39.1MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:21:20,074 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.38ms. Allocated memory is still 121.6MB. Free memory was 94.9MB in the beginning and 98.4MB in the end (delta: -3.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 10:21:20,076 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.61ms. Allocated memory is still 121.6MB. Free memory was 98.4MB in the beginning and 96.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 10:21:20,077 INFO L158 Benchmark]: Boogie Preprocessor took 27.59ms. Allocated memory is still 121.6MB. Free memory was 96.8MB in the beginning and 95.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:21:20,078 INFO L158 Benchmark]: RCFGBuilder took 326.09ms. Allocated memory is still 121.6MB. Free memory was 95.4MB in the beginning and 83.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-22 10:21:20,078 INFO L158 Benchmark]: TraceAbstraction took 431.85ms. Allocated memory is still 121.6MB. Free memory was 82.8MB in the beginning and 94.8MB in the end (delta: -12.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:21:20,079 INFO L158 Benchmark]: Witness Printer took 2.69ms. Allocated memory is still 121.6MB. Free memory is still 94.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:21:20,083 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 81.8MB. Free memory was 39.1MB in the beginning and 39.1MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.38ms. Allocated memory is still 121.6MB. Free memory was 94.9MB in the beginning and 98.4MB in the end (delta: -3.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.61ms. Allocated memory is still 121.6MB. Free memory was 98.4MB in the beginning and 96.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.59ms. Allocated memory is still 121.6MB. Free memory was 96.8MB in the beginning and 95.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 326.09ms. Allocated memory is still 121.6MB. Free memory was 95.4MB in the beginning and 83.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 431.85ms. Allocated memory is still 121.6MB. Free memory was 82.8MB in the beginning and 94.8MB in the end (delta: -12.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.69ms. Allocated memory is still 121.6MB. Free memory is still 94.8MB. 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: 98]: 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 15, overapproximation of someBinaryArithmeticFLOAToperation at line 32, overapproximation of bitwiseAnd at line 29. Possible FailurePath: [L17] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L93] float x = 0.0f / 0.0f; [L94] CALL, EXPR __ieee754_sqrtf(x) [L20] float z; [L21] __uint32_t r, hx; [L22] __int32_t ix, s, q, m, t, i; VAL [\old(x)=2139095042, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=2139095042] [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (ix) = gf_u.word [L29] hx = ix & 0x7fffffff VAL [\old(x)=2139095042, ix=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=2139095042] [L31] COND TRUE !((hx) < 0x7f800000L) [L32] return x * x + x; VAL [\old(x)=2139095042, hx=2139095040, ix=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=2139095042] [L94] RET, EXPR __ieee754_sqrtf(x) [L94] float res = __ieee754_sqrtf(x); [L97] CALL, EXPR isnan_float(res) [L15] return x != x; VAL [\old(x)=2139095041, \result=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=2139095041] [L97] RET, EXPR isnan_float(res) [L97] COND TRUE !isnan_float(res) [L98] reach_error() VAL [one_sqrt=1, res=2139095041, tiny_sqrt=1/1000000000000000000000000000000, x=2139095042] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 43 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-22 10:21:20,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- 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_0720.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 2d431936a29cc36080ed8e682b8710bc84852895ee04dfb24fab46f24aa96450 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 10:21:21,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 10:21:21,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 10:21:21,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 10:21:21,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 10:21:21,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 10:21:21,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 10:21:21,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 10:21:21,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 10:21:21,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 10:21:21,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 10:21:21,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 10:21:21,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 10:21:21,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 10:21:21,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 10:21:21,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 10:21:21,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 10:21:21,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 10:21:21,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 10:21:21,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 10:21:21,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 10:21:21,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 10:21:21,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 10:21:21,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 10:21:21,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 10:21:21,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 10:21:21,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 10:21:21,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 10:21:21,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 10:21:21,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 10:21:21,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 10:21:21,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 10:21:21,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 10:21:21,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 10:21:21,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 10:21:21,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 10:21:21,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 10:21:21,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 10:21:21,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 10:21:21,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 10:21:21,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 10:21:21,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-22 10:21:21,977 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 10:21:21,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 10:21:21,977 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 10:21:21,977 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 10:21:21,978 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 10:21:21,978 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 10:21:21,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 10:21:21,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 10:21:21,979 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 10:21:21,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 10:21:21,979 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 10:21:21,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 10:21:21,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 10:21:21,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 10:21:21,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 10:21:21,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 10:21:21,980 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 10:21:21,980 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 10:21:21,980 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 10:21:21,980 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 10:21:21,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 10:21:21,981 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 10:21:21,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 10:21:21,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 10:21:21,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 10:21:21,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 10:21:21,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:21:21,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 10:21:21,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 10:21:21,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 10:21:21,982 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 10:21:21,982 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 10:21:21,982 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 10:21:21,982 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 10:21:21,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 10:21:21,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 10:21:21,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 10:21:21,983 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d431936a29cc36080ed8e682b8710bc84852895ee04dfb24fab46f24aa96450 [2021-12-22 10:21:22,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 10:21:22,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 10:21:22,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 10:21:22,195 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 10:21:22,195 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 10:21:22,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0720.c [2021-12-22 10:21:22,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f60028b37/ec0f6397e3904773b081c9aeb97ec14a/FLAG3965dbcd7 [2021-12-22 10:21:22,578 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 10:21:22,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0720.c [2021-12-22 10:21:22,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f60028b37/ec0f6397e3904773b081c9aeb97ec14a/FLAG3965dbcd7 [2021-12-22 10:21:22,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f60028b37/ec0f6397e3904773b081c9aeb97ec14a [2021-12-22 10:21:22,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 10:21:22,994 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 10:21:22,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 10:21:22,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 10:21:23,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 10:21:23,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:21:22" (1/1) ... [2021-12-22 10:21:23,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aac53e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:23, skipping insertion in model container [2021-12-22 10:21:23,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:21:22" (1/1) ... [2021-12-22 10:21:23,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 10:21:23,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 10:21:23,119 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_0720.c[1929,1942] [2021-12-22 10:21:23,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:21:23,127 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 10:21:23,143 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_0720.c[1929,1942] [2021-12-22 10:21:23,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:21:23,174 INFO L208 MainTranslator]: Completed translation [2021-12-22 10:21:23,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:23 WrapperNode [2021-12-22 10:21:23,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 10:21:23,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 10:21:23,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 10:21:23,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 10:21:23,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:23" (1/1) ... [2021-12-22 10:21:23,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:23" (1/1) ... [2021-12-22 10:21:23,235 INFO L137 Inliner]: procedures = 20, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 114 [2021-12-22 10:21:23,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 10:21:23,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 10:21:23,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 10:21:23,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 10:21:23,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:23" (1/1) ... [2021-12-22 10:21:23,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:23" (1/1) ... [2021-12-22 10:21:23,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:23" (1/1) ... [2021-12-22 10:21:23,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:23" (1/1) ... [2021-12-22 10:21:23,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:23" (1/1) ... [2021-12-22 10:21:23,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:23" (1/1) ... [2021-12-22 10:21:23,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:23" (1/1) ... [2021-12-22 10:21:23,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 10:21:23,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 10:21:23,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 10:21:23,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 10:21:23,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:23" (1/1) ... [2021-12-22 10:21:23,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:21:23,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:21:23,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 10:21:23,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 10:21:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 10:21:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-22 10:21:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 10:21:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-12-22 10:21:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-22 10:21:23,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 10:21:23,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 10:21:23,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-12-22 10:21:23,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-22 10:21:23,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 10:21:23,421 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 10:21:23,422 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 10:21:24,007 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 10:21:24,011 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 10:21:24,011 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-22 10:21:24,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:21:24 BoogieIcfgContainer [2021-12-22 10:21:24,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 10:21:24,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 10:21:24,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 10:21:24,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 10:21:24,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:21:22" (1/3) ... [2021-12-22 10:21:24,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e44f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:21:24, skipping insertion in model container [2021-12-22 10:21:24,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:21:23" (2/3) ... [2021-12-22 10:21:24,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e44f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:21:24, skipping insertion in model container [2021-12-22 10:21:24,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:21:24" (3/3) ... [2021-12-22 10:21:24,019 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0720.c [2021-12-22 10:21:24,022 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 10:21:24,023 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 10:21:24,068 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 10:21:24,081 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 10:21:24,081 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 10:21:24,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:21:24,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 10:21:24,095 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:21:24,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:21:24,096 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:21:24,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:21:24,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1903734416, now seen corresponding path program 1 times [2021-12-22 10:21:24,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:21:24,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720725894] [2021-12-22 10:21:24,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:21:24,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:21:24,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:21:24,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:21:24,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-22 10:21:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:21:24,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 10:21:24,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:21:24,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:21:24,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:21:24,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:21:24,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720725894] [2021-12-22 10:21:24,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720725894] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:21:24,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:21:24,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 10:21:24,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856624371] [2021-12-22 10:21:24,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:21:24,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 10:21:24,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:21:24,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 10:21:24,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 10:21:24,326 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:21:24,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:21:24,342 INFO L93 Difference]: Finished difference Result 64 states and 98 transitions. [2021-12-22 10:21:24,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 10:21:24,344 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-22 10:21:24,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:21:24,349 INFO L225 Difference]: With dead ends: 64 [2021-12-22 10:21:24,349 INFO L226 Difference]: Without dead ends: 30 [2021-12-22 10:21:24,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 10:21:24,355 INFO L933 BasicCegarLoop]: 43 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, 43 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 [2021-12-22 10:21:24,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 10:21:24,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-22 10:21:24,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-12-22 10:21:24,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:21:24,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2021-12-22 10:21:24,386 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 9 [2021-12-22 10:21:24,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:21:24,386 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2021-12-22 10:21:24,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:21:24,392 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2021-12-22 10:21:24,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-22 10:21:24,393 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:21:24,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:21:24,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-22 10:21:24,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:21:24,604 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:21:24,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:21:24,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1484616397, now seen corresponding path program 1 times [2021-12-22 10:21:24,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:21:24,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519933498] [2021-12-22 10:21:24,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:21:24,608 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:21:24,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:21:24,610 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:21:24,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-22 10:21:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:21:24,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-22 10:21:24,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:21:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:21:24,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:21:24,942 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:21:24,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519933498] [2021-12-22 10:21:24,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519933498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:21:24,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:21:24,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 10:21:24,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068738895] [2021-12-22 10:21:24,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:21:24,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 10:21:24,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:21:24,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 10:21:24,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 10:21:24,945 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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) [2021-12-22 10:21:25,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:21:25,515 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2021-12-22 10:21:25,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 10:21:25,516 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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 [2021-12-22 10:21:25,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:21:25,516 INFO L225 Difference]: With dead ends: 35 [2021-12-22 10:21:25,516 INFO L226 Difference]: Without dead ends: 30 [2021-12-22 10:21:25,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-22 10:21:25,517 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 44 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 10:21:25,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 123 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 10:21:25,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-22 10:21:25,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-12-22 10:21:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:21:25,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2021-12-22 10:21:25,522 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 10 [2021-12-22 10:21:25,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:21:25,522 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2021-12-22 10:21:25,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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) [2021-12-22 10:21:25,522 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2021-12-22 10:21:25,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-22 10:21:25,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:21:25,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:21:25,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-22 10:21:25,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:21:25,723 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:21:25,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:21:25,724 INFO L85 PathProgramCache]: Analyzing trace with hash 591854048, now seen corresponding path program 1 times [2021-12-22 10:21:25,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:21:25,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065817567] [2021-12-22 10:21:25,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:21:25,725 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:21:25,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:21:25,740 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:21:25,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-22 10:21:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:21:25,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-22 10:21:25,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:21:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:21:26,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:21:26,027 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:21:26,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065817567] [2021-12-22 10:21:26,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065817567] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:21:26,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:21:26,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 10:21:26,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045489518] [2021-12-22 10:21:26,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:21:26,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 10:21:26,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:21:26,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 10:21:26,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 10:21:26,029 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:21:26,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:21:26,030 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2021-12-22 10:21:26,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 10:21:26,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2021-12-22 10:21:26,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:21:26,031 INFO L225 Difference]: With dead ends: 30 [2021-12-22 10:21:26,031 INFO L226 Difference]: Without dead ends: 0 [2021-12-22 10:21:26,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 10:21:26,032 INFO L933 BasicCegarLoop]: 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 [2021-12-22 10:21:26,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 4 Unchecked, 0.0s Time] [2021-12-22 10:21:26,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-22 10:21:26,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-22 10:21:26,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:21:26,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-22 10:21:26,033 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-12-22 10:21:26,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:21:26,033 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 10:21:26,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:21:26,033 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-22 10:21:26,033 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-22 10:21:26,036 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 10:21:26,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-22 10:21:26,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:21:26,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-22 10:21:26,338 INFO L861 garLoopResultBuilder]: At program point L102(lines 86 103) the Hoare annotation is: true [2021-12-22 10:21:26,338 INFO L858 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-12-22 10:21:26,338 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-22 10:21:26,338 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-22 10:21:26,338 INFO L858 garLoopResultBuilder]: For program point L78-1(lines 78 82) no Hoare annotation was computed. [2021-12-22 10:21:26,338 INFO L854 garLoopResultBuilder]: At program point L78-2(lines 78 82) the Hoare annotation is: false [2021-12-22 10:21:26,338 INFO L858 garLoopResultBuilder]: For program point L78-3(lines 78 82) no Hoare annotation was computed. [2021-12-22 10:21:26,338 INFO L858 garLoopResultBuilder]: For program point L70(lines 70 73) no Hoare annotation was computed. [2021-12-22 10:21:26,338 INFO L854 garLoopResultBuilder]: At program point L55-2(lines 55 64) the Hoare annotation is: false [2021-12-22 10:21:26,338 INFO L858 garLoopResultBuilder]: For program point L55-3(lines 19 84) no Hoare annotation was computed. [2021-12-22 10:21:26,339 INFO L858 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2021-12-22 10:21:26,339 INFO L858 garLoopResultBuilder]: For program point L47-2(lines 47 48) no Hoare annotation was computed. [2021-12-22 10:21:26,339 INFO L858 garLoopResultBuilder]: For program point L97(lines 97 100) no Hoare annotation was computed. [2021-12-22 10:21:26,339 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2021-12-22 10:21:26,339 INFO L854 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: (and (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 .cse0) .cse0)) |ULTIMATE.start___ieee754_sqrtf_#res#1|) (= |ULTIMATE.start___ieee754_sqrtf_~x#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|)) [2021-12-22 10:21:26,339 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 44) no Hoare annotation was computed. [2021-12-22 10:21:26,339 INFO L858 garLoopResultBuilder]: For program point L40-2(lines 40 44) no Hoare annotation was computed. [2021-12-22 10:21:26,339 INFO L858 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2021-12-22 10:21:26,339 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-22 10:21:26,339 INFO L858 garLoopResultBuilder]: For program point L57(lines 57 61) no Hoare annotation was computed. [2021-12-22 10:21:26,339 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 98) no Hoare annotation was computed. [2021-12-22 10:21:26,339 INFO L858 garLoopResultBuilder]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2021-12-22 10:21:26,339 INFO L858 garLoopResultBuilder]: For program point L57-2(lines 57 61) no Hoare annotation was computed. [2021-12-22 10:21:26,340 INFO L854 garLoopResultBuilder]: At program point L24-2(lines 24 28) the Hoare annotation is: (and (= |ULTIMATE.start___ieee754_sqrtf_~x#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven)) [2021-12-22 10:21:26,340 INFO L858 garLoopResultBuilder]: For program point L24-3(lines 24 28) no Hoare annotation was computed. [2021-12-22 10:21:26,340 INFO L858 garLoopResultBuilder]: For program point L41-2(lines 41 42) no Hoare annotation was computed. [2021-12-22 10:21:26,340 INFO L854 garLoopResultBuilder]: At program point L41-3(lines 41 42) the Hoare annotation is: false [2021-12-22 10:21:26,340 INFO L858 garLoopResultBuilder]: For program point L41-4(lines 41 42) no Hoare annotation was computed. [2021-12-22 10:21:26,340 INFO L858 garLoopResultBuilder]: For program point L66(lines 66 75) no Hoare annotation was computed. [2021-12-22 10:21:26,340 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-22 10:21:26,340 INFO L854 garLoopResultBuilder]: At program point L83(lines 19 84) the Hoare annotation is: (and (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 .cse0) .cse0)) |ULTIMATE.start___ieee754_sqrtf_#res#1|) (= |ULTIMATE.start___ieee754_sqrtf_~x#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven)) [2021-12-22 10:21:26,340 INFO L858 garLoopResultBuilder]: For program point L34(lines 34 35) no Hoare annotation was computed. [2021-12-22 10:21:26,340 INFO L858 garLoopResultBuilder]: For program point L68(lines 68 74) no Hoare annotation was computed. [2021-12-22 10:21:26,342 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-22 10:21:26,343 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 10:21:26,350 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,353 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,354 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,355 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,355 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,355 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,355 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,355 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,355 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,356 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,356 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,356 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,356 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,356 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,357 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,357 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,357 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,357 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,357 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,357 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,358 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,358 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,358 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,358 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,358 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,358 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 10:21:26 BoogieIcfgContainer [2021-12-22 10:21:26,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 10:21:26,359 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 10:21:26,359 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 10:21:26,360 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 10:21:26,360 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:21:24" (3/4) ... [2021-12-22 10:21:26,362 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-22 10:21:26,368 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-12-22 10:21:26,369 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-12-22 10:21:26,369 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-22 10:21:26,369 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-22 10:21:26,383 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.mul~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-12-22 10:21:26,384 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.mul~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result [2021-12-22 10:21:26,394 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 10:21:26,394 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 10:21:26,394 INFO L158 Benchmark]: Toolchain (without parser) took 3399.87ms. Allocated memory was 50.3MB in the beginning and 67.1MB in the end (delta: 16.8MB). Free memory was 34.2MB in the beginning and 30.9MB in the end (delta: 3.2MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2021-12-22 10:21:26,395 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 41.9MB. Free memory was 24.9MB in the beginning and 24.9MB in the end (delta: 46.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:21:26,395 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.24ms. Allocated memory is still 50.3MB. Free memory was 34.0MB in the beginning and 33.9MB in the end (delta: 181.7kB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2021-12-22 10:21:26,395 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.94ms. Allocated memory is still 50.3MB. Free memory was 33.9MB in the beginning and 31.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:21:26,395 INFO L158 Benchmark]: Boogie Preprocessor took 44.37ms. Allocated memory is still 50.3MB. Free memory was 31.9MB in the beginning and 30.4MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-22 10:21:26,396 INFO L158 Benchmark]: RCFGBuilder took 730.72ms. Allocated memory is still 50.3MB. Free memory was 30.4MB in the beginning and 27.0MB in the end (delta: 3.4MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2021-12-22 10:21:26,396 INFO L158 Benchmark]: TraceAbstraction took 2346.00ms. Allocated memory was 50.3MB in the beginning and 67.1MB in the end (delta: 16.8MB). Free memory was 26.5MB in the beginning and 34.8MB in the end (delta: -8.3MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-12-22 10:21:26,396 INFO L158 Benchmark]: Witness Printer took 34.58ms. Allocated memory is still 67.1MB. Free memory was 34.5MB in the beginning and 30.9MB in the end (delta: 3.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-22 10:21:26,398 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 41.9MB. Free memory was 24.9MB in the beginning and 24.9MB in the end (delta: 46.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 177.24ms. Allocated memory is still 50.3MB. Free memory was 34.0MB in the beginning and 33.9MB in the end (delta: 181.7kB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.94ms. Allocated memory is still 50.3MB. Free memory was 33.9MB in the beginning and 31.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.37ms. Allocated memory is still 50.3MB. Free memory was 31.9MB in the beginning and 30.4MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 730.72ms. Allocated memory is still 50.3MB. Free memory was 30.4MB in the beginning and 27.0MB in the end (delta: 3.4MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2346.00ms. Allocated memory was 50.3MB in the beginning and 67.1MB in the end (delta: 16.8MB). Free memory was 26.5MB in the beginning and 34.8MB in the end (delta: -8.3MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Witness Printer took 34.58ms. Allocated memory is still 67.1MB. Free memory was 34.5MB in the beginning and 30.9MB in the end (delta: 3.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.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: 98]: 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, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44 mSDsluCounter, 174 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 4 IncrementalHoareTripleChecker+Unchecked, 97 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 77 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 11 NumberOfFragments, 73 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 38 ConstructedInterpolants, 4 QuantifiedInterpolants, 146 SizeOfPredicates, 16 NumberOfNonLiveVariables, 145 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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: 24]: Loop Invariant [2021-12-22 10:21:26,406 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,406 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 78]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 15]: Loop Invariant [2021-12-22 10:21:26,411 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,411 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,412 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,412 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,412 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,412 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,412 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,412 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,412 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,413 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,413 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,413 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.mul~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result - InvariantResult [Line: 19]: Loop Invariant [2021-12-22 10:21:26,413 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,413 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,414 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,414 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,414 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,414 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,414 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,414 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,414 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,415 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,415 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:21:26,415 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.mul~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-12-22 10:21:26,449 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