./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 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c0005e6146056cc1de3f3f086fde77a54c02f63 .......................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c0005e6146056cc1de3f3f086fde77a54c02f63 ................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:35:03,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:35:03,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:35:03,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:35:03,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:35:03,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:35:03,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:35:03,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:35:03,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:35:03,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:35:03,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:35:03,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:35:03,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:35:03,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:35:03,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:35:03,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:35:03,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:35:03,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:35:03,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:35:03,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:35:03,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:35:03,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:35:03,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:35:03,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:35:03,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:35:03,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:35:03,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:35:03,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:35:03,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:35:03,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:35:03,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:35:03,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:35:03,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:35:03,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:35:03,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:35:03,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:35:03,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:35:03,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:35:03,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:35:03,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:35:03,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:35:03,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:35:03,352 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:35:03,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:35:03,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:35:03,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:35:03,354 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:35:03,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:35:03,354 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:35:03,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:35:03,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:35:03,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:35:03,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:35:03,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:35:03,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:35:03,356 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:35:03,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:35:03,356 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:35:03,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:35:03,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:35:03,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:35:03,357 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:35:03,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:35:03,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:35:03,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:35:03,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:35:03,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:35:03,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:35:03,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:35:03,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:35:03,359 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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(__VERIFIER_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 -> 6c0005e6146056cc1de3f3f086fde77a54c02f63 [2019-11-27 23:35:03,647 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:35:03,665 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:35:03,669 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:35:03,670 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:35:03,670 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:35:03,672 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/cast_union_tight.c [2019-11-27 23:35:03,735 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bd752d29/7ed8ec1ba19b4f91be8b3c6f11c65716/FLAG3ef0b2634 [2019-11-27 23:35:04,117 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:35:04,118 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/cast_union_tight.c [2019-11-27 23:35:04,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bd752d29/7ed8ec1ba19b4f91be8b3c6f11c65716/FLAG3ef0b2634 [2019-11-27 23:35:04,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bd752d29/7ed8ec1ba19b4f91be8b3c6f11c65716 [2019-11-27 23:35:04,561 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:35:04,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:35:04,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:35:04,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:35:04,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:35:04,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:35:04" (1/1) ... [2019-11-27 23:35:04,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc447bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:04, skipping insertion in model container [2019-11-27 23:35:04,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:35:04" (1/1) ... [2019-11-27 23:35:04,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:35:04,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:35:04,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:35:04,764 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:35:04,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:35:04,870 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:35:04,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:04 WrapperNode [2019-11-27 23:35:04,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:35:04,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:35:04,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:35:04,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:35:04,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:04" (1/1) ... [2019-11-27 23:35:04,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:04" (1/1) ... [2019-11-27 23:35:04,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:35:04,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:35:04,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:35:04,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:35:04,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:04" (1/1) ... [2019-11-27 23:35:04,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:04" (1/1) ... [2019-11-27 23:35:04,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:04" (1/1) ... [2019-11-27 23:35:04,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:04" (1/1) ... [2019-11-27 23:35:04,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:04" (1/1) ... [2019-11-27 23:35:04,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:04" (1/1) ... [2019-11-27 23:35:04,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:04" (1/1) ... [2019-11-27 23:35:04,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:35:04,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:35:04,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:35:04,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:35:04,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:35:05,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-27 23:35:05,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 23:35:05,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:35:05,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:35:05,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:35:05,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:35:05,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:35:05,310 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:35:05,311 INFO L297 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-27 23:35:05,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:35:05 BoogieIcfgContainer [2019-11-27 23:35:05,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:35:05,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:35:05,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:35:05,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:35:05,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:35:04" (1/3) ... [2019-11-27 23:35:05,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@423d4d20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:35:05, skipping insertion in model container [2019-11-27 23:35:05,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:04" (2/3) ... [2019-11-27 23:35:05,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@423d4d20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:35:05, skipping insertion in model container [2019-11-27 23:35:05,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:35:05" (3/3) ... [2019-11-27 23:35:05,329 INFO L109 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c [2019-11-27 23:35:05,352 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:35:05,370 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:35:05,401 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:35:05,456 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:35:05,456 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:35:05,456 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:35:05,456 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:35:05,456 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:35:05,457 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:35:05,457 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:35:05,457 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:35:05,488 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-27 23:35:05,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-27 23:35:05,498 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:35:05,499 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-27 23:35:05,499 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:35:05,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:35:05,507 INFO L82 PathProgramCache]: Analyzing trace with hash 28692803, now seen corresponding path program 1 times [2019-11-27 23:35:05,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:35:05,518 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122496300] [2019-11-27 23:35:05,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:35:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:35:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:35:05,706 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:35:05,707 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:35:05,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:35:05 BoogieIcfgContainer [2019-11-27 23:35:05,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:35:05,729 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:35:05,729 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:35:05,729 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:35:05,729 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:35:05" (3/4) ... [2019-11-27 23:35:05,733 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-27 23:35:05,733 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:35:05,736 INFO L168 Benchmark]: Toolchain (without parser) took 1172.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -131.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:35:05,737 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:35:05,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -176.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:35:05,739 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:35:05,740 INFO L168 Benchmark]: Boogie Preprocessor took 51.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:35:05,741 INFO L168 Benchmark]: RCFGBuilder took 347.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-27 23:35:05,742 INFO L168 Benchmark]: TraceAbstraction took 414.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:35:05,742 INFO L168 Benchmark]: Witness Printer took 4.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:35:05,749 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 307.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -176.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 347.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 414.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 21, overapproximation of bitwiseXor at line 20. Possible FailurePath: [L26] int a; [L27] double r; [L29] a = __VERIFIER_nondet_int() [L16] union u x, y; [L17] x.i[0] = 0x43300000 [L18] EXPR x.i[0] [L18] y.i[0] = x.i[0] [L19] x.i[1] = 0x80000000 [L20] EXPR x.i[1] [L20] y.i[1] = i ^ x.i[1] [L21] EXPR y.d [L21] EXPR x.d [L21] return y.d - x.d; [L21] return y.d - x.d; [L21] return y.d - x.d; [L31] r = cast(a) [L7] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=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, 0.0s 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:35:07,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:35:07,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:35:07,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:35:07,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:35:07,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:35:07,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:35:07,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:35:07,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:35:07,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:35:07,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:35:07,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:35:07,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:35:07,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:35:07,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:35:07,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:35:07,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:35:07,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:35:07,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:35:07,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:35:07,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:35:07,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:35:07,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:35:07,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:35:07,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:35:07,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:35:07,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:35:07,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:35:07,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:35:07,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:35:07,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:35:07,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:35:07,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:35:07,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:35:07,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:35:07,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:35:07,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:35:07,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:35:07,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:35:07,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:35:07,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:35:07,864 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 23:35:07,896 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:35:07,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:35:07,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:35:07,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:35:07,898 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:35:07,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:35:07,902 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:35:07,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:35:07,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:35:07,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:35:07,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:35:07,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:35:07,904 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 23:35:07,904 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 23:35:07,904 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:35:07,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:35:07,904 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:35:07,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:35:07,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:35:07,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:35:07,905 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:35:07,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:35:07,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:35:07,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:35:07,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:35:07,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:35:07,908 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 23:35:07,908 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 23:35:07,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:35:07,908 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 23:35:07,908 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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(__VERIFIER_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 -> 6c0005e6146056cc1de3f3f086fde77a54c02f63 [2019-11-27 23:35:08,200 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:35:08,212 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:35:08,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:35:08,217 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:35:08,217 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:35:08,218 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/cast_union_tight.c [2019-11-27 23:35:08,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68d26eaa/d0846f450e1f4dd58c85e6f069610feb/FLAGb495856a7 [2019-11-27 23:35:08,647 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:35:08,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/cast_union_tight.c [2019-11-27 23:35:08,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68d26eaa/d0846f450e1f4dd58c85e6f069610feb/FLAGb495856a7 [2019-11-27 23:35:09,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68d26eaa/d0846f450e1f4dd58c85e6f069610feb [2019-11-27 23:35:09,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:35:09,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:35:09,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:35:09,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:35:09,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:35:09,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:35:09" (1/1) ... [2019-11-27 23:35:09,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7085c7ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:09, skipping insertion in model container [2019-11-27 23:35:09,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:35:09" (1/1) ... [2019-11-27 23:35:09,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:35:09,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:35:09,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:35:09,255 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:35:09,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:35:09,328 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:35:09,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:09 WrapperNode [2019-11-27 23:35:09,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:35:09,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:35:09,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:35:09,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:35:09,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:09" (1/1) ... [2019-11-27 23:35:09,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:09" (1/1) ... [2019-11-27 23:35:09,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:35:09,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:35:09,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:35:09,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:35:09,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:09" (1/1) ... [2019-11-27 23:35:09,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:09" (1/1) ... [2019-11-27 23:35:09,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:09" (1/1) ... [2019-11-27 23:35:09,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:09" (1/1) ... [2019-11-27 23:35:09,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:09" (1/1) ... [2019-11-27 23:35:09,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:09" (1/1) ... [2019-11-27 23:35:09,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:09" (1/1) ... [2019-11-27 23:35:09,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:35:09,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:35:09,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:35:09,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:35:09,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:35:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-27 23:35:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:35:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-27 23:35:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:35:09,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:35:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:35:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-27 23:35:09,984 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:35:09,984 INFO L297 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-27 23:35:09,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:35:09 BoogieIcfgContainer [2019-11-27 23:35:09,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:35:09,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:35:09,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:35:09,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:35:09,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:35:09" (1/3) ... [2019-11-27 23:35:09,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38bb6c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:35:09, skipping insertion in model container [2019-11-27 23:35:09,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:09" (2/3) ... [2019-11-27 23:35:09,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38bb6c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:35:09, skipping insertion in model container [2019-11-27 23:35:09,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:35:09" (3/3) ... [2019-11-27 23:35:09,994 INFO L109 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c [2019-11-27 23:35:10,004 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:35:10,011 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:35:10,022 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:35:10,040 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:35:10,040 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:35:10,040 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:35:10,041 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:35:10,041 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:35:10,041 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:35:10,041 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:35:10,041 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:35:10,051 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-27 23:35:10,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-27 23:35:10,056 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:35:10,057 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-27 23:35:10,057 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:35:10,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:35:10,062 INFO L82 PathProgramCache]: Analyzing trace with hash 28692803, now seen corresponding path program 1 times [2019-11-27 23:35:10,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:35:10,074 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923663293] [2019-11-27 23:35:10,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-27 23:35:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:35:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:35:10,483 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-27 23:35:10,483 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:35:10,684 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 23:35:10,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:35:10 BoogieIcfgContainer [2019-11-27 23:35:10,708 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:35:10,709 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:35:10,709 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:35:10,709 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:35:10,710 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:35:09" (3/4) ... [2019-11-27 23:35:10,717 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:35:10,762 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:35:10,763 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:35:10,766 INFO L168 Benchmark]: Toolchain (without parser) took 1736.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -133.4 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:35:10,766 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:35:10,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.44 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:35:10,773 INFO L168 Benchmark]: Boogie Procedure Inliner took 120.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -184.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-27 23:35:10,773 INFO L168 Benchmark]: Boogie Preprocessor took 66.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:35:10,775 INFO L168 Benchmark]: RCFGBuilder took 468.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-27 23:35:10,776 INFO L168 Benchmark]: TraceAbstraction took 721.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2019-11-27 23:35:10,776 INFO L168 Benchmark]: Witness Printer took 54.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:35:10,790 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 300.44 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 120.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -184.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 66.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 468.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 721.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * Witness Printer took 54.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L26] int a; [L27] double r; [L29] a = __VERIFIER_nondet_int() [L16] union u x, y; [L17] x.i[0] = 0x43300000 [L18] EXPR x.i[0] [L18] y.i[0] = x.i[0] [L19] x.i[1] = 0x80000000 [L20] EXPR x.i[1] [L20] y.i[1] = i ^ x.i[1] [L21] EXPR y.d [L21] EXPR x.d [L21] return y.d - x.d; [L21] return y.d - x.d; [L21] return y.d - x.d; [L31] r = cast(a) [L7] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...