./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/nan_float.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c 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/nan_float.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 2b1f703b8c1a340e028de77080ca419d81a34cd6 ........................................................................................................................................................................................................................ 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/nan_float.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 2b1f703b8c1a340e028de77080ca419d81a34cd6 .............................................................................................................................................................................................................................. 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 0.1.25-f470102 [2019-11-28 16:41:39,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:41:39,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:41:39,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:41:39,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:41:39,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:41:39,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:41:39,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:41:39,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:41:39,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:41:39,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:41:39,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:41:39,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:41:39,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:41:39,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:41:39,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:41:39,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:41:39,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:41:39,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:41:39,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:41:39,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:41:39,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:41:39,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:41:39,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:41:39,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:41:39,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:41:39,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:41:39,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:41:39,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:41:39,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:41:39,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:41:39,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:41:39,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:41:39,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:41:39,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:41:39,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:41:39,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:41:39,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:41:39,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:41:39,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:41:39,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:41:39,240 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:41:39,255 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:41:39,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:41:39,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:41:39,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:41:39,258 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:41:39,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:41:39,258 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:41:39,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:41:39,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:41:39,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:41:39,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:41:39,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:41:39,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:41:39,260 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:41:39,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:41:39,261 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:41:39,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:41:39,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:41:39,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:41:39,262 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:41:39,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:41:39,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:41:39,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:41:39,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:41:39,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:41:39,264 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:41:39,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:41:39,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:41:39,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:41:39,265 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 -> 2b1f703b8c1a340e028de77080ca419d81a34cd6 [2019-11-28 16:41:39,561 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:41:39,580 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:41:39,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:41:39,586 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:41:39,588 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:41:39,589 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/nan_float.c [2019-11-28 16:41:39,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c50cf74e2/8531b2d874024b8680f3e7234aa06b5a/FLAG3f208e324 [2019-11-28 16:41:40,134 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:41:40,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_float.c [2019-11-28 16:41:40,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c50cf74e2/8531b2d874024b8680f3e7234aa06b5a/FLAG3f208e324 [2019-11-28 16:41:40,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c50cf74e2/8531b2d874024b8680f3e7234aa06b5a [2019-11-28 16:41:40,499 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:41:40,501 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:41:40,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:41:40,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:41:40,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:41:40,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:41:40" (1/1) ... [2019-11-28 16:41:40,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f9736e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:40, skipping insertion in model container [2019-11-28 16:41:40,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:41:40" (1/1) ... [2019-11-28 16:41:40,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:41:40,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:41:40,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:41:40,702 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:41:40,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:41:40,725 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:41:40,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:40 WrapperNode [2019-11-28 16:41:40,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:41:40,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:41:40,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:41:40,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:41:40,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:40" (1/1) ... [2019-11-28 16:41:40,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:40" (1/1) ... [2019-11-28 16:41:40,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:41:40,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:41:40,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:41:40,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:41:40,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:40" (1/1) ... [2019-11-28 16:41:40,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:40" (1/1) ... [2019-11-28 16:41:40,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:40" (1/1) ... [2019-11-28 16:41:40,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:40" (1/1) ... [2019-11-28 16:41:40,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:40" (1/1) ... [2019-11-28 16:41:40,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:40" (1/1) ... [2019-11-28 16:41:40,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:40" (1/1) ... [2019-11-28 16:41:40,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:41:40,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:41:40,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:41:40,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:41:40,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:40" (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 [2019-11-28 16:41:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:41:40,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:41:41,028 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:41:41,028 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 16:41:41,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:41 BoogieIcfgContainer [2019-11-28 16:41:41,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:41:41,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:41:41,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:41:41,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:41:41,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:41:40" (1/3) ... [2019-11-28 16:41:41,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f8d660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:41:41, skipping insertion in model container [2019-11-28 16:41:41,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:40" (2/3) ... [2019-11-28 16:41:41,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f8d660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:41:41, skipping insertion in model container [2019-11-28 16:41:41,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:41" (3/3) ... [2019-11-28 16:41:41,038 INFO L109 eAbstractionObserver]: Analyzing ICFG nan_float.c [2019-11-28 16:41:41,048 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:41:41,054 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:41:41,063 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:41:41,088 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:41:41,088 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:41:41,088 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:41:41,088 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:41:41,089 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:41:41,089 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:41:41,089 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:41:41,089 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:41:41,101 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-28 16:41:41,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-28 16:41:41,107 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:41:41,108 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-28 16:41:41,108 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:41:41,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:41:41,113 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2019-11-28 16:41:41,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:41:41,123 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528751948] [2019-11-28 16:41:41,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:41:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:41:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:41:41,223 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:41:41,224 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:41:41,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:41:41 BoogieIcfgContainer [2019-11-28 16:41:41,241 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:41:41,241 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:41:41,241 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:41:41,242 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:41:41,242 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:41" (3/4) ... [2019-11-28 16:41:41,247 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:41:41,247 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:41:41,250 INFO L168 Benchmark]: Toolchain (without parser) took 747.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -151.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:41:41,251 INFO L168 Benchmark]: CDTParser took 0.85 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:41:41,252 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.69 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:41,253 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -198.9 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:41,254 INFO L168 Benchmark]: Boogie Preprocessor took 18.57 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. [2019-11-28 16:41:41,254 INFO L168 Benchmark]: RCFGBuilder took 198.76 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:41,255 INFO L168 Benchmark]: TraceAbstraction took 209.92 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. [2019-11-28 16:41:41,256 INFO L168 Benchmark]: Witness Printer took 5.58 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. [2019-11-28 16:41:41,261 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.85 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 222.69 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.3 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 85.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -198.9 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.57 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 198.76 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 209.92 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 5.58 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: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 13. Possible FailurePath: [L10] float x; [L11] x = __VERIFIER_nondet_float() [L6] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, 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=8occurred 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, 3 NumberOfCodeBlocks, 3 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 0.1.25-f470102 [2019-11-28 16:41:43,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:41:43,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:41:43,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:41:43,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:41:43,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:41:43,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:41:43,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:41:43,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:41:43,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:41:43,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:41:43,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:41:43,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:41:43,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:41:43,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:41:43,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:41:43,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:41:43,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:41:43,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:41:43,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:41:43,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:41:43,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:41:43,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:41:43,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:41:43,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:41:43,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:41:43,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:41:43,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:41:43,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:41:43,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:41:43,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:41:43,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:41:43,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:41:43,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:41:43,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:41:43,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:41:43,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:41:43,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:41:43,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:41:43,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:41:43,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:41:43,442 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:41:43,476 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:41:43,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:41:43,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:41:43,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:41:43,481 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:41:43,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:41:43,481 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:41:43,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:41:43,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:41:43,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:41:43,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:41:43,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:41:43,484 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:41:43,485 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:41:43,485 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:41:43,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:41:43,485 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:41:43,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:41:43,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:41:43,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:41:43,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:41:43,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:41:43,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:41:43,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:41:43,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:41:43,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:41:43,492 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:41:43,492 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:41:43,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:41:43,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:41:43,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:41:43,493 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 -> 2b1f703b8c1a340e028de77080ca419d81a34cd6 [2019-11-28 16:41:43,832 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:41:43,845 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:41:43,849 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:41:43,851 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:41:43,851 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:41:43,852 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/nan_float.c [2019-11-28 16:41:43,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe020f1bd/aeaa006adf894e3e912f36dc30f29052/FLAG019614075 [2019-11-28 16:41:44,415 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:41:44,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_float.c [2019-11-28 16:41:44,423 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe020f1bd/aeaa006adf894e3e912f36dc30f29052/FLAG019614075 [2019-11-28 16:41:44,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe020f1bd/aeaa006adf894e3e912f36dc30f29052 [2019-11-28 16:41:44,809 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:41:44,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:41:44,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:41:44,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:41:44,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:41:44,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:41:44" (1/1) ... [2019-11-28 16:41:44,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e93ac70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:44, skipping insertion in model container [2019-11-28 16:41:44,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:41:44" (1/1) ... [2019-11-28 16:41:44,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:41:44,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:41:44,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:41:45,002 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:41:45,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:41:45,033 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:41:45,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:45 WrapperNode [2019-11-28 16:41:45,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:41:45,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:41:45,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:41:45,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:41:45,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:45" (1/1) ... [2019-11-28 16:41:45,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:45" (1/1) ... [2019-11-28 16:41:45,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:41:45,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:41:45,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:41:45,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:41:45,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:45" (1/1) ... [2019-11-28 16:41:45,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:45" (1/1) ... [2019-11-28 16:41:45,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:45" (1/1) ... [2019-11-28 16:41:45,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:45" (1/1) ... [2019-11-28 16:41:45,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:45" (1/1) ... [2019-11-28 16:41:45,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:45" (1/1) ... [2019-11-28 16:41:45,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:45" (1/1) ... [2019-11-28 16:41:45,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:41:45,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:41:45,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:41:45,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:41:45,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:45" (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 [2019-11-28 16:41:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:41:45,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:41:45,350 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:41:45,350 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 16:41:45,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:45 BoogieIcfgContainer [2019-11-28 16:41:45,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:41:45,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:41:45,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:41:45,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:41:45,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:41:44" (1/3) ... [2019-11-28 16:41:45,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb60d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:41:45, skipping insertion in model container [2019-11-28 16:41:45,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:45" (2/3) ... [2019-11-28 16:41:45,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb60d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:41:45, skipping insertion in model container [2019-11-28 16:41:45,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:45" (3/3) ... [2019-11-28 16:41:45,359 INFO L109 eAbstractionObserver]: Analyzing ICFG nan_float.c [2019-11-28 16:41:45,369 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:41:45,376 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:41:45,389 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:41:45,415 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:41:45,415 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:41:45,415 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:41:45,416 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:41:45,416 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:41:45,416 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:41:45,416 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:41:45,416 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:41:45,432 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-28 16:41:45,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 16:41:45,438 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:41:45,439 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 16:41:45,439 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:41:45,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:41:45,444 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2019-11-28 16:41:45,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:41:45,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104079962] [2019-11-28 16:41:45,455 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 [2019-11-28 16:41:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:41:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:41:45,543 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 16:41:45,544 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:41:45,757 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:41:45,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:41:45 BoogieIcfgContainer [2019-11-28 16:41:45,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:41:45,776 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:41:45,776 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:41:45,777 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:41:45,777 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:45" (3/4) ... [2019-11-28 16:41:45,780 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 16:41:45,816 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:41:45,817 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:41:45,820 INFO L168 Benchmark]: Toolchain (without parser) took 1008.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -113.7 MB). Peak memory consumption was 50.0 kB. Max. memory is 11.5 GB. [2019-11-28 16:41:45,821 INFO L168 Benchmark]: CDTParser took 0.27 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. [2019-11-28 16:41:45,822 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.52 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:45,823 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:45,824 INFO L168 Benchmark]: Boogie Preprocessor took 20.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:45,825 INFO L168 Benchmark]: RCFGBuilder took 208.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:45,826 INFO L168 Benchmark]: TraceAbstraction took 423.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:45,827 INFO L168 Benchmark]: Witness Printer took 40.83 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:41:45,832 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 222.52 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 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 87.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 208.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 423.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Witness Printer took 40.83 ms. Allocated memory is still 1.1 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: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] float x; [L11] x = __VERIFIER_nondet_float() [L6] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, 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=9occurred 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, 4 NumberOfCodeBlocks, 4 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...