./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/cast_union_tight.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/cast_union_tight.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 692e0f6bff326dae555773498e30d5c37d6c88dd20df70f4e6fff349bc763d90 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 11:47:16,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 11:47:16,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 11:47:16,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 11:47:16,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 11:47:16,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 11:47:16,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 11:47:16,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 11:47:16,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 11:47:16,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 11:47:16,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 11:47:16,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 11:47:16,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 11:47:16,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 11:47:16,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 11:47:16,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 11:47:16,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 11:47:16,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 11:47:16,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 11:47:16,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 11:47:16,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 11:47:16,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 11:47:16,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 11:47:16,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 11:47:16,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 11:47:16,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 11:47:16,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 11:47:16,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 11:47:16,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 11:47:16,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 11:47:16,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 11:47:16,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 11:47:16,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 11:47:16,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 11:47:16,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 11:47:16,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 11:47:16,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 11:47:16,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 11:47:16,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 11:47:16,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 11:47:16,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 11:47:16,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 11:47:16,343 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 11:47:16,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 11:47:16,344 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 11:47:16,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 11:47:16,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 11:47:16,345 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 11:47:16,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 11:47:16,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 11:47:16,346 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 11:47:16,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 11:47:16,346 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 11:47:16,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 11:47:16,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 11:47:16,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 11:47:16,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 11:47:16,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 11:47:16,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 11:47:16,348 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 11:47:16,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 11:47:16,348 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 11:47:16,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 11:47:16,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 11:47:16,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 11:47:16,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 11:47:16,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:47:16,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 11:47:16,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 11:47:16,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 11:47:16,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 11:47:16,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 11:47:16,351 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 11:47:16,351 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 11:47:16,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 11:47:16,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 11:47:16,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 692e0f6bff326dae555773498e30d5c37d6c88dd20df70f4e6fff349bc763d90 [2021-12-21 11:47:16,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 11:47:16,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 11:47:16,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 11:47:16,574 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 11:47:16,574 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 11:47:16,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/cast_union_tight.c [2021-12-21 11:47:16,619 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ed3aec89/fb426ecf30cb42ff90dc5c577fc69c75/FLAGd1588072d [2021-12-21 11:47:16,978 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 11:47:16,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/cast_union_tight.c [2021-12-21 11:47:16,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ed3aec89/fb426ecf30cb42ff90dc5c577fc69c75/FLAGd1588072d [2021-12-21 11:47:17,408 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ed3aec89/fb426ecf30cb42ff90dc5c577fc69c75 [2021-12-21 11:47:17,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 11:47:17,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 11:47:17,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 11:47:17,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 11:47:17,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 11:47:17,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:47:17" (1/1) ... [2021-12-21 11:47:17,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a88ba96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:17, skipping insertion in model container [2021-12-21 11:47:17,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:47:17" (1/1) ... [2021-12-21 11:47:17,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 11:47:17,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 11:47:17,533 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-benchs/cast_union_tight.c[495,508] [2021-12-21 11:47:17,542 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:47:17,546 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 11:47:17,558 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-benchs/cast_union_tight.c[495,508] [2021-12-21 11:47:17,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:47:17,580 INFO L208 MainTranslator]: Completed translation [2021-12-21 11:47:17,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:17 WrapperNode [2021-12-21 11:47:17,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 11:47:17,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 11:47:17,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 11:47:17,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 11:47:17,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:17" (1/1) ... [2021-12-21 11:47:17,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:17" (1/1) ... [2021-12-21 11:47:17,603 INFO L137 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2021-12-21 11:47:17,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 11:47:17,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 11:47:17,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 11:47:17,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 11:47:17,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:17" (1/1) ... [2021-12-21 11:47:17,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:17" (1/1) ... [2021-12-21 11:47:17,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:17" (1/1) ... [2021-12-21 11:47:17,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:17" (1/1) ... [2021-12-21 11:47:17,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:17" (1/1) ... [2021-12-21 11:47:17,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:17" (1/1) ... [2021-12-21 11:47:17,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:17" (1/1) ... [2021-12-21 11:47:17,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 11:47:17,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 11:47:17,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 11:47:17,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 11:47:17,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:17" (1/1) ... [2021-12-21 11:47:17,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:47:17,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 11:47:17,646 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) [2021-12-21 11:47:17,648 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 [2021-12-21 11:47:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 11:47:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 11:47:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 11:47:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-21 11:47:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 11:47:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 11:47:17,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 11:47:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 11:47:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 11:47:17,719 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 11:47:17,720 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 11:47:17,839 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 11:47:17,843 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 11:47:17,843 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 11:47:17,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:47:17 BoogieIcfgContainer [2021-12-21 11:47:17,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 11:47:17,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 11:47:17,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 11:47:17,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 11:47:17,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:47:17" (1/3) ... [2021-12-21 11:47:17,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11648daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:47:17, skipping insertion in model container [2021-12-21 11:47:17,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:17" (2/3) ... [2021-12-21 11:47:17,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11648daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:47:17, skipping insertion in model container [2021-12-21 11:47:17,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:47:17" (3/3) ... [2021-12-21 11:47:17,865 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c [2021-12-21 11:47:17,868 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 11:47:17,868 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 11:47:17,898 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 11:47:17,903 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 [2021-12-21 11:47:17,903 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 11:47:17,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 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) [2021-12-21 11:47:17,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-21 11:47:17,915 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:47:17,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-21 11:47:17,919 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:47:17,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:47:17,927 INFO L85 PathProgramCache]: Analyzing trace with hash 28692803, now seen corresponding path program 1 times [2021-12-21 11:47:17,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:47:17,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839932819] [2021-12-21 11:47:17,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:47:17,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:47:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 11:47:18,094 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 11:47:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 11:47:18,146 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 11:47:18,147 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 11:47:18,149 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-21 11:47:18,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 11:47:18,154 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-21 11:47:18,157 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 11:47:18,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:47:18 BoogieIcfgContainer [2021-12-21 11:47:18,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 11:47:18,183 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 11:47:18,183 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 11:47:18,184 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 11:47:18,184 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:47:17" (3/4) ... [2021-12-21 11:47:18,186 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 11:47:18,187 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 11:47:18,188 INFO L158 Benchmark]: Toolchain (without parser) took 777.23ms. Allocated memory was 107.0MB in the beginning and 132.1MB in the end (delta: 25.2MB). Free memory was 79.8MB in the beginning and 106.8MB in the end (delta: -27.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:47:18,189 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 107.0MB. Free memory was 63.9MB in the beginning and 63.7MB in the end (delta: 110.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 11:47:18,190 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.24ms. Allocated memory is still 107.0MB. Free memory was 79.6MB in the beginning and 81.5MB in the end (delta: -1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 11:47:18,191 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.80ms. Allocated memory is still 107.0MB. Free memory was 81.2MB in the beginning and 79.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 11:47:18,194 INFO L158 Benchmark]: Boogie Preprocessor took 16.08ms. Allocated memory is still 107.0MB. Free memory was 79.7MB in the beginning and 78.7MB in the end (delta: 974.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 11:47:18,194 INFO L158 Benchmark]: RCFGBuilder took 224.13ms. Allocated memory is still 107.0MB. Free memory was 78.7MB in the beginning and 67.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 11:47:18,195 INFO L158 Benchmark]: TraceAbstraction took 320.99ms. Allocated memory was 107.0MB in the beginning and 132.1MB in the end (delta: 25.2MB). Free memory was 67.1MB in the beginning and 107.4MB in the end (delta: -40.3MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. [2021-12-21 11:47:18,196 INFO L158 Benchmark]: Witness Printer took 3.65ms. Allocated memory is still 132.1MB. Free memory was 107.4MB in the beginning and 106.8MB in the end (delta: 620.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:47:18,201 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 107.0MB. Free memory was 63.9MB in the beginning and 63.7MB in the end (delta: 110.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 167.24ms. Allocated memory is still 107.0MB. Free memory was 79.6MB in the beginning and 81.5MB in the end (delta: -1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.80ms. Allocated memory is still 107.0MB. Free memory was 81.2MB in the beginning and 79.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.08ms. Allocated memory is still 107.0MB. Free memory was 79.7MB in the beginning and 78.7MB in the end (delta: 974.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 224.13ms. Allocated memory is still 107.0MB. Free memory was 78.7MB in the beginning and 67.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 320.99ms. Allocated memory was 107.0MB in the beginning and 132.1MB in the end (delta: 25.2MB). Free memory was 67.1MB in the beginning and 107.4MB in the end (delta: -40.3MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. * Witness Printer took 3.65ms. Allocated memory is still 132.1MB. Free memory was 107.4MB in the beginning and 106.8MB in the end (delta: 620.3kB). 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: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 34, overapproximation of someBinaryArithmeticDOUBLEoperation at line 23, overapproximation of bitwiseXor at line 22. Possible FailurePath: [L28] int a; [L29] double r; [L31] a = __VERIFIER_nondet_int() [L33] CALL, EXPR cast(a) [L18] union u x, y; [L19] x.i[0] = 0x43300000 [L20] EXPR x.i[0] [L20] y.i[0] = x.i[0] [L21] x.i[1] = 0x80000000 [L22] EXPR x.i[1] [L22] y.i[1] = i ^ x.i[1] [L23] EXPR y.d [L23] EXPR x.d [L23] return y.d - x.d; [L23] return y.d - x.d; [L23] return y.d - x.d; VAL [\old(i)=-1, i=-1] [L33] RET, EXPR cast(a) [L33] r = cast(a) [L34] CALL __VERIFIER_assert(r == a) [L9] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L9] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-21 11:47:18,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/cast_union_tight.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 692e0f6bff326dae555773498e30d5c37d6c88dd20df70f4e6fff349bc763d90 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 11:47:19,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 11:47:19,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 11:47:19,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 11:47:19,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 11:47:19,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 11:47:19,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 11:47:19,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 11:47:19,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 11:47:19,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 11:47:19,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 11:47:19,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 11:47:19,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 11:47:19,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 11:47:19,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 11:47:19,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 11:47:19,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 11:47:19,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 11:47:19,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 11:47:19,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 11:47:19,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 11:47:19,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 11:47:19,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 11:47:19,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 11:47:19,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 11:47:19,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 11:47:19,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 11:47:19,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 11:47:19,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 11:47:19,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 11:47:19,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 11:47:19,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 11:47:19,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 11:47:19,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 11:47:19,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 11:47:19,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 11:47:19,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 11:47:19,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 11:47:19,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 11:47:19,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 11:47:19,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 11:47:19,940 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-21 11:47:19,967 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 11:47:19,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 11:47:19,969 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 11:47:19,969 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 11:47:19,969 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 11:47:19,970 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 11:47:19,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 11:47:19,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 11:47:19,971 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 11:47:19,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 11:47:19,972 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 11:47:19,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 11:47:19,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 11:47:19,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 11:47:19,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 11:47:19,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 11:47:19,972 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 11:47:19,973 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-21 11:47:19,973 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-21 11:47:19,973 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 11:47:19,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 11:47:19,973 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 11:47:19,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 11:47:19,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 11:47:19,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 11:47:19,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 11:47:19,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:47:19,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 11:47:19,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 11:47:19,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 11:47:19,974 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-21 11:47:19,975 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-21 11:47:19,975 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 11:47:19,975 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 11:47:19,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 11:47:19,975 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 11:47:19,975 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-21 11:47:19,976 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 692e0f6bff326dae555773498e30d5c37d6c88dd20df70f4e6fff349bc763d90 [2021-12-21 11:47:20,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 11:47:20,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 11:47:20,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 11:47:20,296 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 11:47:20,296 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 11:47:20,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/cast_union_tight.c [2021-12-21 11:47:20,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/147aae0fe/87d41e9bf1d54abca53b935654de00cc/FLAG92f25a687 [2021-12-21 11:47:20,735 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 11:47:20,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/cast_union_tight.c [2021-12-21 11:47:20,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/147aae0fe/87d41e9bf1d54abca53b935654de00cc/FLAG92f25a687 [2021-12-21 11:47:20,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/147aae0fe/87d41e9bf1d54abca53b935654de00cc [2021-12-21 11:47:20,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 11:47:20,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 11:47:20,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 11:47:20,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 11:47:20,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 11:47:20,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:47:20" (1/1) ... [2021-12-21 11:47:20,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dddf307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:20, skipping insertion in model container [2021-12-21 11:47:20,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:47:20" (1/1) ... [2021-12-21 11:47:20,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 11:47:20,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 11:47:20,883 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-benchs/cast_union_tight.c[495,508] [2021-12-21 11:47:20,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:47:20,911 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 11:47:20,930 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-benchs/cast_union_tight.c[495,508] [2021-12-21 11:47:20,959 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:47:20,974 INFO L208 MainTranslator]: Completed translation [2021-12-21 11:47:20,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:20 WrapperNode [2021-12-21 11:47:20,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 11:47:20,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 11:47:20,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 11:47:20,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 11:47:20,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:20" (1/1) ... [2021-12-21 11:47:20,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:20" (1/1) ... [2021-12-21 11:47:21,009 INFO L137 Inliner]: procedures = 20, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2021-12-21 11:47:21,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 11:47:21,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 11:47:21,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 11:47:21,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 11:47:21,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:20" (1/1) ... [2021-12-21 11:47:21,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:20" (1/1) ... [2021-12-21 11:47:21,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:20" (1/1) ... [2021-12-21 11:47:21,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:20" (1/1) ... [2021-12-21 11:47:21,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:20" (1/1) ... [2021-12-21 11:47:21,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:20" (1/1) ... [2021-12-21 11:47:21,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:20" (1/1) ... [2021-12-21 11:47:21,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 11:47:21,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 11:47:21,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 11:47:21,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 11:47:21,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:20" (1/1) ... [2021-12-21 11:47:21,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:47:21,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 11:47:21,069 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) [2021-12-21 11:47:21,097 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 [2021-12-21 11:47:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 11:47:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-21 11:47:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-21 11:47:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 11:47:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-21 11:47:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 11:47:21,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 11:47:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 11:47:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-21 11:47:21,184 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 11:47:21,185 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 11:47:21,729 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 11:47:21,733 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 11:47:21,733 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 11:47:21,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:47:21 BoogieIcfgContainer [2021-12-21 11:47:21,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 11:47:21,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 11:47:21,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 11:47:21,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 11:47:21,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:47:20" (1/3) ... [2021-12-21 11:47:21,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762495b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:47:21, skipping insertion in model container [2021-12-21 11:47:21,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:20" (2/3) ... [2021-12-21 11:47:21,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762495b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:47:21, skipping insertion in model container [2021-12-21 11:47:21,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:47:21" (3/3) ... [2021-12-21 11:47:21,745 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c [2021-12-21 11:47:21,749 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 11:47:21,752 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 11:47:21,815 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 11:47:21,820 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 [2021-12-21 11:47:21,821 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 11:47:21,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 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) [2021-12-21 11:47:21,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-21 11:47:21,832 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:47:21,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-21 11:47:21,832 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:47:21,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:47:21,836 INFO L85 PathProgramCache]: Analyzing trace with hash 28692803, now seen corresponding path program 1 times [2021-12-21 11:47:21,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:47:21,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656229150] [2021-12-21 11:47:21,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:47:21,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:47:21,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:47:21,847 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) [2021-12-21 11:47:21,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-21 11:47:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 11:47:21,983 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 11:47:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 11:47:22,108 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-21 11:47:22,109 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 11:47:22,110 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-21 11:47:22,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-21 11:47:22,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 11:47:22,315 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-21 11:47:22,317 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 11:47:22,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:47:22 BoogieIcfgContainer [2021-12-21 11:47:22,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 11:47:22,340 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 11:47:22,340 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 11:47:22,341 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 11:47:22,341 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:47:21" (3/4) ... [2021-12-21 11:47:22,343 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-21 11:47:22,381 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 11:47:22,382 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 11:47:22,383 INFO L158 Benchmark]: Toolchain (without parser) took 1628.39ms. Allocated memory was 58.7MB in the beginning and 79.7MB in the end (delta: 21.0MB). Free memory was 37.7MB in the beginning and 49.1MB in the end (delta: -11.4MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2021-12-21 11:47:22,383 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 58.7MB. Free memory was 41.0MB in the beginning and 41.0MB in the end (delta: 42.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:47:22,384 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.12ms. Allocated memory is still 58.7MB. Free memory was 37.6MB in the beginning and 41.9MB in the end (delta: -4.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-21 11:47:22,384 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.03ms. Allocated memory is still 58.7MB. Free memory was 41.9MB in the beginning and 40.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:47:22,384 INFO L158 Benchmark]: Boogie Preprocessor took 35.63ms. Allocated memory is still 58.7MB. Free memory was 40.2MB in the beginning and 38.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 11:47:22,385 INFO L158 Benchmark]: RCFGBuilder took 687.22ms. Allocated memory is still 58.7MB. Free memory was 38.9MB in the beginning and 28.6MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 11:47:22,385 INFO L158 Benchmark]: TraceAbstraction took 596.39ms. Allocated memory was 58.7MB in the beginning and 79.7MB in the end (delta: 21.0MB). Free memory was 28.1MB in the beginning and 50.9MB in the end (delta: -22.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:47:22,385 INFO L158 Benchmark]: Witness Printer took 41.63ms. Allocated memory is still 79.7MB. Free memory was 50.9MB in the beginning and 49.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 11:47:22,390 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 58.7MB. Free memory was 41.0MB in the beginning and 41.0MB in the end (delta: 42.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.12ms. Allocated memory is still 58.7MB. Free memory was 37.6MB in the beginning and 41.9MB in the end (delta: -4.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.03ms. Allocated memory is still 58.7MB. Free memory was 41.9MB in the beginning and 40.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.63ms. Allocated memory is still 58.7MB. Free memory was 40.2MB in the beginning and 38.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 687.22ms. Allocated memory is still 58.7MB. Free memory was 38.9MB in the beginning and 28.6MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 596.39ms. Allocated memory was 58.7MB in the beginning and 79.7MB in the end (delta: 21.0MB). Free memory was 28.1MB in the beginning and 50.9MB in the end (delta: -22.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 41.63ms. Allocated memory is still 79.7MB. Free memory was 50.9MB in the beginning and 49.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 9]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L28] int a; [L29] double r; [L31] a = __VERIFIER_nondet_int() [L33] CALL, EXPR cast(a) [L18] union u x, y; [L19] x.i[0] = 0x43300000 [L20] EXPR x.i[0] [L20] y.i[0] = x.i[0] [L21] x.i[1] = 0x80000000 [L22] EXPR x.i[1] [L22] y.i[1] = i ^ x.i[1] [L23] EXPR y.d [L23] EXPR x.d [L23] return y.d - x.d; [L23] return y.d - x.d; [L23] return y.d - x.d; VAL [\old(i)=283652, \result=-0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006019083500988814, i=283652] [L33] RET, EXPR cast(a) [L33] r = cast(a) [L34] CALL __VERIFIER_assert(r == a) [L9] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L9] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-21 11:47:22,423 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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE