./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 ae007674 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-ae00767 [2021-12-27 23:22:45,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 23:22:45,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 23:22:45,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 23:22:45,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 23:22:45,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 23:22:45,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 23:22:45,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 23:22:45,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 23:22:45,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 23:22:45,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 23:22:45,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 23:22:45,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 23:22:45,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 23:22:45,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 23:22:45,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 23:22:45,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 23:22:45,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 23:22:45,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 23:22:45,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 23:22:45,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 23:22:45,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 23:22:45,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 23:22:45,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 23:22:45,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 23:22:45,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 23:22:45,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 23:22:45,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 23:22:45,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 23:22:45,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 23:22:45,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 23:22:45,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 23:22:45,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 23:22:45,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 23:22:45,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 23:22:45,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 23:22:45,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 23:22:45,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 23:22:45,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 23:22:45,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 23:22:45,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 23:22:45,387 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-27 23:22:45,418 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 23:22:45,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 23:22:45,419 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 23:22:45,419 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 23:22:45,420 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 23:22:45,420 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 23:22:45,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 23:22:45,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 23:22:45,421 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 23:22:45,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 23:22:45,422 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 23:22:45,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-27 23:22:45,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 23:22:45,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 23:22:45,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 23:22:45,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 23:22:45,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 23:22:45,423 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 23:22:45,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 23:22:45,424 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 23:22:45,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 23:22:45,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 23:22:45,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 23:22:45,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 23:22:45,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:22:45,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 23:22:45,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 23:22:45,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 23:22:45,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-27 23:22:45,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-27 23:22:45,425 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 23:22:45,426 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 23:22:45,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 23:22:45,426 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 692e0f6bff326dae555773498e30d5c37d6c88dd20df70f4e6fff349bc763d90 [2021-12-27 23:22:45,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 23:22:45,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 23:22:45,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 23:22:45,744 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 23:22:45,750 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 23:22:45,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/cast_union_tight.c [2021-12-27 23:22:45,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f7614e18/85a3bf12be4e4254a413738887630f44/FLAGc4e2c71a9 [2021-12-27 23:22:46,112 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 23:22:46,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/cast_union_tight.c [2021-12-27 23:22:46,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f7614e18/85a3bf12be4e4254a413738887630f44/FLAGc4e2c71a9 [2021-12-27 23:22:46,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f7614e18/85a3bf12be4e4254a413738887630f44 [2021-12-27 23:22:46,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 23:22:46,535 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 23:22:46,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 23:22:46,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 23:22:46,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 23:22:46,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:22:46" (1/1) ... [2021-12-27 23:22:46,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67e1859b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:46, skipping insertion in model container [2021-12-27 23:22:46,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:22:46" (1/1) ... [2021-12-27 23:22:46,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 23:22:46,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 23:22:46,646 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] [2021-12-27 23:22:46,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:22:46,660 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 23:22:46,667 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] [2021-12-27 23:22:46,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:22:46,679 INFO L208 MainTranslator]: Completed translation [2021-12-27 23:22:46,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:46 WrapperNode [2021-12-27 23:22:46,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 23:22:46,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 23:22:46,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 23:22:46,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 23:22:46,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:46" (1/1) ... [2021-12-27 23:22:46,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:46" (1/1) ... [2021-12-27 23:22:46,743 INFO L137 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2021-12-27 23:22:46,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 23:22:46,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 23:22:46,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 23:22:46,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 23:22:46,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:46" (1/1) ... [2021-12-27 23:22:46,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:46" (1/1) ... [2021-12-27 23:22:46,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:46" (1/1) ... [2021-12-27 23:22:46,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:46" (1/1) ... [2021-12-27 23:22:46,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:46" (1/1) ... [2021-12-27 23:22:46,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:46" (1/1) ... [2021-12-27 23:22:46,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:46" (1/1) ... [2021-12-27 23:22:46,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 23:22:46,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 23:22:46,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 23:22:46,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 23:22:46,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:46" (1/1) ... [2021-12-27 23:22:46,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:22:46,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:22:46,820 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) [2021-12-27 23:22:46,841 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 [2021-12-27 23:22:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 23:22:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-27 23:22:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-27 23:22:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-27 23:22:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-27 23:22:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 23:22:46,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 23:22:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-27 23:22:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-27 23:22:46,932 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 23:22:46,934 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 23:22:47,068 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 23:22:47,072 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 23:22:47,072 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-27 23:22:47,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:22:47 BoogieIcfgContainer [2021-12-27 23:22:47,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 23:22:47,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 23:22:47,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 23:22:47,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 23:22:47,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 11:22:46" (1/3) ... [2021-12-27 23:22:47,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f05280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:22:47, skipping insertion in model container [2021-12-27 23:22:47,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:46" (2/3) ... [2021-12-27 23:22:47,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f05280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:22:47, skipping insertion in model container [2021-12-27 23:22:47,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:22:47" (3/3) ... [2021-12-27 23:22:47,079 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c [2021-12-27 23:22:47,082 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 23:22:47,082 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 23:22:47,116 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 23:22:47,121 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 [2021-12-27 23:22:47,121 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 23:22:47,129 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) [2021-12-27 23:22:47,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-27 23:22:47,133 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:22:47,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-27 23:22:47,133 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:22:47,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:22:47,138 INFO L85 PathProgramCache]: Analyzing trace with hash 28692803, now seen corresponding path program 1 times [2021-12-27 23:22:47,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:22:47,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625217782] [2021-12-27 23:22:47,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:22:47,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:22:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-27 23:22:47,303 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-27 23:22:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-27 23:22:47,338 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-27 23:22:47,340 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-27 23:22:47,341 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-27 23:22:47,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-27 23:22:47,346 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-27 23:22:47,348 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-27 23:22:47,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 11:22:47 BoogieIcfgContainer [2021-12-27 23:22:47,364 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-27 23:22:47,367 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-27 23:22:47,367 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-27 23:22:47,367 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-27 23:22:47,368 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:22:47" (3/4) ... [2021-12-27 23:22:47,370 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-27 23:22:47,371 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-27 23:22:47,372 INFO L158 Benchmark]: Toolchain (without parser) took 836.40ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 32.2MB in the beginning and 52.1MB in the end (delta: -19.9MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2021-12-27 23:22:47,372 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory was 36.4MB in the beginning and 36.3MB in the end (delta: 37.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 23:22:47,373 INFO L158 Benchmark]: CACSL2BoogieTranslator took 143.00ms. Allocated memory is still 54.5MB. Free memory was 32.0MB in the beginning and 35.6MB in the end (delta: -3.6MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-12-27 23:22:47,374 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.29ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 35.6MB in the beginning and 61.6MB in the end (delta: -25.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-27 23:22:47,377 INFO L158 Benchmark]: Boogie Preprocessor took 31.64ms. Allocated memory is still 77.6MB. Free memory was 61.6MB in the beginning and 60.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 23:22:47,377 INFO L158 Benchmark]: RCFGBuilder took 296.91ms. Allocated memory is still 77.6MB. Free memory was 60.3MB in the beginning and 49.6MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-27 23:22:47,378 INFO L158 Benchmark]: TraceAbstraction took 289.55ms. Allocated memory is still 77.6MB. Free memory was 49.1MB in the beginning and 52.5MB in the end (delta: -3.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 23:22:47,379 INFO L158 Benchmark]: Witness Printer took 3.95ms. Allocated memory is still 77.6MB. Free memory was 52.5MB in the beginning and 52.1MB in the end (delta: 315.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 23:22:47,384 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory was 36.4MB in the beginning and 36.3MB in the end (delta: 37.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 143.00ms. Allocated memory is still 54.5MB. Free memory was 32.0MB in the beginning and 35.6MB in the end (delta: -3.6MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.29ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 35.6MB in the beginning and 61.6MB in the end (delta: -25.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.64ms. Allocated memory is still 77.6MB. Free memory was 61.6MB in the beginning and 60.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 296.91ms. Allocated memory is still 77.6MB. Free memory was 60.3MB in the beginning and 49.6MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 289.55ms. Allocated memory is still 77.6MB. Free memory was 49.1MB in the beginning and 52.5MB in the end (delta: -3.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.95ms. Allocated memory is still 77.6MB. Free memory was 52.5MB in the beginning and 52.1MB in the end (delta: 315.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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: 0.2s, 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 [2021-12-27 23:22:47,429 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-ae00767 [2021-12-27 23:22:49,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 23:22:49,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 23:22:49,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 23:22:49,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 23:22:49,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 23:22:49,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 23:22:49,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 23:22:49,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 23:22:49,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 23:22:49,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 23:22:49,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 23:22:49,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 23:22:49,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 23:22:49,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 23:22:49,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 23:22:49,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 23:22:49,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 23:22:49,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 23:22:49,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 23:22:49,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 23:22:49,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 23:22:49,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 23:22:49,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 23:22:49,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 23:22:49,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 23:22:49,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 23:22:49,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 23:22:49,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 23:22:49,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 23:22:49,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 23:22:49,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 23:22:49,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 23:22:49,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 23:22:49,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 23:22:49,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 23:22:49,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 23:22:49,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 23:22:49,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 23:22:49,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 23:22:49,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 23:22:49,314 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-27 23:22:49,342 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 23:22:49,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 23:22:49,343 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 23:22:49,343 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 23:22:49,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 23:22:49,344 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 23:22:49,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 23:22:49,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 23:22:49,345 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 23:22:49,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 23:22:49,346 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 23:22:49,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 23:22:49,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 23:22:49,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 23:22:49,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 23:22:49,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 23:22:49,347 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-27 23:22:49,347 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-27 23:22:49,347 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-27 23:22:49,347 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 23:22:49,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 23:22:49,348 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 23:22:49,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 23:22:49,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 23:22:49,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 23:22:49,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 23:22:49,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:22:49,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 23:22:49,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 23:22:49,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 23:22:49,349 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-27 23:22:49,349 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-27 23:22:49,349 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 23:22:49,349 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 23:22:49,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 23:22:49,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-27 23:22:49,350 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 692e0f6bff326dae555773498e30d5c37d6c88dd20df70f4e6fff349bc763d90 [2021-12-27 23:22:49,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 23:22:49,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 23:22:49,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 23:22:49,679 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 23:22:49,680 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 23:22:49,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/cast_union_tight.c [2021-12-27 23:22:49,724 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64610ea6c/42212609caf542a5b5df54c878e54131/FLAGd557edf8e [2021-12-27 23:22:50,035 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 23:22:50,036 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/cast_union_tight.c [2021-12-27 23:22:50,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64610ea6c/42212609caf542a5b5df54c878e54131/FLAGd557edf8e [2021-12-27 23:22:50,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64610ea6c/42212609caf542a5b5df54c878e54131 [2021-12-27 23:22:50,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 23:22:50,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 23:22:50,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 23:22:50,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 23:22:50,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 23:22:50,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:22:50" (1/1) ... [2021-12-27 23:22:50,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c98a1fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:50, skipping insertion in model container [2021-12-27 23:22:50,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:22:50" (1/1) ... [2021-12-27 23:22:50,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 23:22:50,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 23:22:50,702 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] [2021-12-27 23:22:50,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:22:50,752 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 23:22:50,762 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] [2021-12-27 23:22:50,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:22:50,812 INFO L208 MainTranslator]: Completed translation [2021-12-27 23:22:50,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:50 WrapperNode [2021-12-27 23:22:50,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 23:22:50,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 23:22:50,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 23:22:50,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 23:22:50,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:50" (1/1) ... [2021-12-27 23:22:50,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:50" (1/1) ... [2021-12-27 23:22:50,851 INFO L137 Inliner]: procedures = 20, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2021-12-27 23:22:50,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 23:22:50,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 23:22:50,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 23:22:50,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 23:22:50,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:50" (1/1) ... [2021-12-27 23:22:50,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:50" (1/1) ... [2021-12-27 23:22:50,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:50" (1/1) ... [2021-12-27 23:22:50,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:50" (1/1) ... [2021-12-27 23:22:50,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:50" (1/1) ... [2021-12-27 23:22:50,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:50" (1/1) ... [2021-12-27 23:22:50,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:50" (1/1) ... [2021-12-27 23:22:50,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 23:22:50,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 23:22:50,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 23:22:50,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 23:22:50,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:50" (1/1) ... [2021-12-27 23:22:50,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:22:50,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:22:50,945 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) [2021-12-27 23:22:50,976 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 [2021-12-27 23:22:50,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 23:22:50,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-27 23:22:50,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-27 23:22:50,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-27 23:22:50,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-27 23:22:50,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 23:22:50,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 23:22:50,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-27 23:22:50,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-27 23:22:51,071 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 23:22:51,072 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 23:22:51,686 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 23:22:51,690 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 23:22:51,690 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-27 23:22:51,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:22:51 BoogieIcfgContainer [2021-12-27 23:22:51,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 23:22:51,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 23:22:51,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 23:22:51,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 23:22:51,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 11:22:50" (1/3) ... [2021-12-27 23:22:51,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377c4c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:22:51, skipping insertion in model container [2021-12-27 23:22:51,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:50" (2/3) ... [2021-12-27 23:22:51,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377c4c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:22:51, skipping insertion in model container [2021-12-27 23:22:51,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:22:51" (3/3) ... [2021-12-27 23:22:51,710 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c [2021-12-27 23:22:51,720 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 23:22:51,720 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 23:22:51,786 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 23:22:51,801 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 [2021-12-27 23:22:51,801 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 23:22:51,810 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) [2021-12-27 23:22:51,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-27 23:22:51,814 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:22:51,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-27 23:22:51,815 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:22:51,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:22:51,819 INFO L85 PathProgramCache]: Analyzing trace with hash 28692803, now seen corresponding path program 1 times [2021-12-27 23:22:51,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-27 23:22:51,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876169022] [2021-12-27 23:22:51,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:22:51,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-27 23:22:51,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-27 23:22:51,846 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) [2021-12-27 23:22:51,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-27 23:22:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-27 23:22:52,000 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-27 23:22:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-27 23:22:52,130 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-27 23:22:52,131 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-27 23:22:52,132 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-27 23:22:52,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-27 23:22:52,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-27 23:22:52,337 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-27 23:22:52,339 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-27 23:22:52,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 11:22:52 BoogieIcfgContainer [2021-12-27 23:22:52,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-27 23:22:52,368 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-27 23:22:52,368 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-27 23:22:52,368 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-27 23:22:52,369 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:22:51" (3/4) ... [2021-12-27 23:22:52,370 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-27 23:22:52,403 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-27 23:22:52,404 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-27 23:22:52,406 INFO L158 Benchmark]: Toolchain (without parser) took 1915.98ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 39.8MB in the beginning and 48.1MB in the end (delta: -8.2MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2021-12-27 23:22:52,406 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory was 41.2MB in the beginning and 41.1MB in the end (delta: 49.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 23:22:52,407 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.83ms. Allocated memory is still 58.7MB. Free memory was 39.6MB in the beginning and 42.2MB in the end (delta: -2.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-27 23:22:52,407 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.97ms. Allocated memory is still 58.7MB. Free memory was 42.2MB in the beginning and 40.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 23:22:52,407 INFO L158 Benchmark]: Boogie Preprocessor took 33.79ms. Allocated memory is still 58.7MB. Free memory was 40.7MB in the beginning and 39.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-27 23:22:52,408 INFO L158 Benchmark]: RCFGBuilder took 796.94ms. Allocated memory is still 58.7MB. Free memory was 39.4MB in the beginning and 29.1MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-27 23:22:52,408 INFO L158 Benchmark]: TraceAbstraction took 672.83ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 28.5MB in the beginning and 49.8MB in the end (delta: -21.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 23:22:52,409 INFO L158 Benchmark]: Witness Printer took 37.25ms. Allocated memory is still 77.6MB. Free memory was 49.8MB in the beginning and 48.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-27 23:22:52,411 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 58.7MB. Free memory was 41.2MB in the beginning and 41.1MB in the end (delta: 49.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.83ms. Allocated memory is still 58.7MB. Free memory was 39.6MB in the beginning and 42.2MB in the end (delta: -2.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.97ms. Allocated memory is still 58.7MB. Free memory was 42.2MB in the beginning and 40.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.79ms. Allocated memory is still 58.7MB. Free memory was 40.7MB in the beginning and 39.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 796.94ms. Allocated memory is still 58.7MB. Free memory was 39.4MB in the beginning and 29.1MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 672.83ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 28.5MB in the beginning and 49.8MB in the end (delta: -21.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 37.25ms. Allocated memory is still 77.6MB. Free memory was 49.8MB in the beginning and 48.1MB in the end (delta: 1.7MB). 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: 0.6s, 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! [2021-12-27 23:22:52,446 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE