./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 ................................................................................................................................................................................................................................................................................................ 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 -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 ............................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.2.0-a4ecdab [2020-10-24 23:11:43,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:11:43,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:11:43,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:11:43,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:11:43,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:11:43,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:11:43,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:11:43,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:11:43,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:11:43,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:11:43,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:11:43,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:11:43,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:11:43,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:11:43,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:11:43,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:11:43,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:11:43,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:11:43,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:11:43,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:11:43,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:11:43,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:11:43,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:11:43,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:11:43,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:11:43,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:11:43,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:11:43,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:11:43,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:11:43,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:11:43,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:11:43,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:11:43,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:11:43,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:11:43,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:11:43,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:11:43,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:11:43,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:11:43,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:11:43,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:11:43,259 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 23:11:43,306 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:11:43,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:11:43,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:11:43,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:11:43,309 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:11:43,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:11:43,310 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:11:43,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 23:11:43,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:11:43,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:11:43,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:11:43,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:11:43,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:11:43,312 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:11:43,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:11:43,312 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:11:43,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:11:43,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:11:43,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:11:43,314 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:11:43,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:11:43,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:11:43,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:11:43,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:11:43,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:11:43,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 23:11:43,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 23:11:43,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:11:43,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:11:43,317 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 [2020-10-24 23:11:43,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:11:43,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:11:43,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:11:43,779 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:11:43,780 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:11:43,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-10-24 23:11:43,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74cc23f37/b1202923d8784a05b21df4e185bbfc9c/FLAG65d21105e [2020-10-24 23:11:44,484 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:11:44,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-10-24 23:11:44,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74cc23f37/b1202923d8784a05b21df4e185bbfc9c/FLAG65d21105e [2020-10-24 23:11:44,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74cc23f37/b1202923d8784a05b21df4e185bbfc9c [2020-10-24 23:11:44,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:11:44,859 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:11:44,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:11:44,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:11:44,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:11:44,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:11:44" (1/1) ... [2020-10-24 23:11:44,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5387e3d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:44, skipping insertion in model container [2020-10-24 23:11:44,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:11:44" (1/1) ... [2020-10-24 23:11:44,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:11:44,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:11:45,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:11:45,172 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:11:45,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:11:45,256 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:11:45,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:45 WrapperNode [2020-10-24 23:11:45,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:11:45,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:11:45,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:11:45,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:11:45,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:45" (1/1) ... [2020-10-24 23:11:45,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:45" (1/1) ... [2020-10-24 23:11:45,316 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:11:45,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:11:45,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:11:45,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:11:45,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:45" (1/1) ... [2020-10-24 23:11:45,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:45" (1/1) ... [2020-10-24 23:11:45,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:45" (1/1) ... [2020-10-24 23:11:45,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:45" (1/1) ... [2020-10-24 23:11:45,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:45" (1/1) ... [2020-10-24 23:11:45,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:45" (1/1) ... [2020-10-24 23:11:45,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:45" (1/1) ... [2020-10-24 23:11:45,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:11:45,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:11:45,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:11:45,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:11:45,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:45" (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 [2020-10-24 23:11:45,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 23:11:45,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:11:45,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 23:11:45,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 23:11:45,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 23:11:45,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:11:45,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:11:45,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 23:11:45,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:11:46,190 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:11:46,191 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-24 23:11:46,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:11:46 BoogieIcfgContainer [2020-10-24 23:11:46,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:11:46,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:11:46,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:11:46,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:11:46,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:11:44" (1/3) ... [2020-10-24 23:11:46,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57054356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:11:46, skipping insertion in model container [2020-10-24 23:11:46,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:45" (2/3) ... [2020-10-24 23:11:46,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57054356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:11:46, skipping insertion in model container [2020-10-24 23:11:46,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:11:46" (3/3) ... [2020-10-24 23:11:46,203 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-10-24 23:11:46,216 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:11:46,222 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:11:46,237 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:11:46,267 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:11:46,267 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:11:46,267 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:11:46,268 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:11:46,268 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:11:46,268 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:11:46,268 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:11:46,269 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:11:46,293 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-24 23:11:46,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-24 23:11:46,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:11:46,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:11:46,302 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:11:46,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:11:46,309 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2020-10-24 23:11:46,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:11:46,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894247326] [2020-10-24 23:11:46,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:11:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:11:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:11:46,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894247326] [2020-10-24 23:11:46,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:11:46,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 23:11:46,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463847302] [2020-10-24 23:11:46,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:11:46,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:11:46,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:11:46,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:11:46,489 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-10-24 23:11:46,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:11:46,517 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2020-10-24 23:11:46,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:11:46,519 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-24 23:11:46,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:11:46,531 INFO L225 Difference]: With dead ends: 105 [2020-10-24 23:11:46,531 INFO L226 Difference]: Without dead ends: 50 [2020-10-24 23:11:46,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:11:46,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-24 23:11:46,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-24 23:11:46,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-24 23:11:46,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2020-10-24 23:11:46,579 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2020-10-24 23:11:46,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:11:46,580 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2020-10-24 23:11:46,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:11:46,580 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-10-24 23:11:46,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 23:11:46,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:11:46,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:11:46,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 23:11:46,582 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:11:46,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:11:46,583 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2020-10-24 23:11:46,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:11:46,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905436314] [2020-10-24 23:11:46,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:11:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:11:46,627 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:11:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:11:46,673 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:11:46,719 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 23:11:46,720 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:11:46,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 23:11:46,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:11:46 BoogieIcfgContainer [2020-10-24 23:11:46,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:11:46,778 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:11:46,778 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:11:46,779 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:11:46,779 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:11:46" (3/4) ... [2020-10-24 23:11:46,784 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 23:11:46,784 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:11:46,787 INFO L168 Benchmark]: Toolchain (without parser) took 1931.48 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.5 MB in the beginning and 30.9 MB in the end (delta: 593.9 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-10-24 23:11:46,789 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 39.8 MB. Free memory was 18.2 MB in the beginning and 18.1 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:11:46,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.20 ms. Allocated memory is still 54.5 MB. Free memory was 30.9 MB in the beginning and 31.7 MB in the end (delta: -865.8 kB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-10-24 23:11:46,790 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.47 ms. Allocated memory is still 54.5 MB. Free memory was 31.7 MB in the beginning and 29.5 MB in the end (delta: 2.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:11:46,791 INFO L168 Benchmark]: Boogie Preprocessor took 66.83 ms. Allocated memory is still 54.5 MB. Free memory was 29.5 MB in the beginning and 27.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-24 23:11:46,792 INFO L168 Benchmark]: RCFGBuilder took 808.63 ms. Allocated memory is still 54.5 MB. Free memory was 27.5 MB in the beginning and 27.0 MB in the end (delta: 502.0 kB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2020-10-24 23:11:46,794 INFO L168 Benchmark]: TraceAbstraction took 582.31 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 26.5 MB in the beginning and 31.1 MB in the end (delta: -4.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2020-10-24 23:11:46,794 INFO L168 Benchmark]: Witness Printer took 6.39 ms. Allocated memory is still 67.1 MB. Free memory was 31.1 MB in the beginning and 30.9 MB in the end (delta: 241.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:11:46,800 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 39.8 MB. Free memory was 18.2 MB in the beginning and 18.1 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 394.20 ms. Allocated memory is still 54.5 MB. Free memory was 30.9 MB in the beginning and 31.7 MB in the end (delta: -865.8 kB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.47 ms. Allocated memory is still 54.5 MB. Free memory was 31.7 MB in the beginning and 29.5 MB in the end (delta: 2.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.83 ms. Allocated memory is still 54.5 MB. Free memory was 29.5 MB in the beginning and 27.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 808.63 ms. Allocated memory is still 54.5 MB. Free memory was 27.5 MB in the beginning and 27.0 MB in the end (delta: 502.0 kB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 582.31 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 26.5 MB in the beginning and 31.1 MB in the end (delta: -4.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.39 ms. Allocated memory is still 67.1 MB. Free memory was 31.1 MB in the beginning and 30.9 MB in the end (delta: 241.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 151, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 155. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L151] double x = -0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L155] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_0730b.c", 3, "reach_error") VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-10-24 23:11:49,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:11:49,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:11:49,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:11:49,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:11:49,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:11:49,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:11:49,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:11:49,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:11:49,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:11:49,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:11:49,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:11:49,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:11:49,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:11:49,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:11:49,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:11:49,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:11:49,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:11:49,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:11:49,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:11:49,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:11:49,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:11:49,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:11:49,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:11:49,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:11:49,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:11:49,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:11:49,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:11:49,552 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:11:49,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:11:49,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:11:49,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:11:49,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:11:49,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:11:49,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:11:49,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:11:49,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:11:49,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:11:49,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:11:49,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:11:49,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:11:49,569 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 23:11:49,625 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:11:49,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:11:49,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:11:49,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:11:49,630 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:11:49,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:11:49,631 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:11:49,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:11:49,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:11:49,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:11:49,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:11:49,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:11:49,634 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 23:11:49,634 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 23:11:49,634 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:11:49,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:11:49,635 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:11:49,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:11:49,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:11:49,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:11:49,636 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:11:49,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:11:49,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:11:49,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:11:49,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:11:49,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:11:49,638 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 23:11:49,638 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 23:11:49,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:11:49,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:11:49,639 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 23:11:49,640 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 [2020-10-24 23:11:50,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:11:50,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:11:50,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:11:50,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:11:50,083 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:11:50,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-10-24 23:11:50,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d01a93c5c/e8fdfd33f61940a0934fd3287fe2b501/FLAGe0bb50d69 [2020-10-24 23:11:50,752 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:11:50,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-10-24 23:11:50,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d01a93c5c/e8fdfd33f61940a0934fd3287fe2b501/FLAGe0bb50d69 [2020-10-24 23:11:51,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d01a93c5c/e8fdfd33f61940a0934fd3287fe2b501 [2020-10-24 23:11:51,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:11:51,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:11:51,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:11:51,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:11:51,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:11:51,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:11:51" (1/1) ... [2020-10-24 23:11:51,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b623b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:51, skipping insertion in model container [2020-10-24 23:11:51,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:11:51" (1/1) ... [2020-10-24 23:11:51,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:11:51,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:11:51,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:11:51,412 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:11:51,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:11:51,485 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:11:51,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:51 WrapperNode [2020-10-24 23:11:51,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:11:51,487 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:11:51,487 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:11:51,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:11:51,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:51" (1/1) ... [2020-10-24 23:11:51,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:51" (1/1) ... [2020-10-24 23:11:51,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:11:51,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:11:51,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:11:51,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:11:51,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:51" (1/1) ... [2020-10-24 23:11:51,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:51" (1/1) ... [2020-10-24 23:11:51,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:51" (1/1) ... [2020-10-24 23:11:51,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:51" (1/1) ... [2020-10-24 23:11:51,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:51" (1/1) ... [2020-10-24 23:11:51,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:51" (1/1) ... [2020-10-24 23:11:51,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:51" (1/1) ... [2020-10-24 23:11:51,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:11:51,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:11:51,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:11:51,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:11:51,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:51" (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 [2020-10-24 23:11:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-24 23:11:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 23:11:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 23:11:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:11:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 23:11:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:11:51,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:11:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-24 23:11:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:11:55,515 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:11:55,516 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-24 23:11:55,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:11:55 BoogieIcfgContainer [2020-10-24 23:11:55,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:11:55,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:11:55,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:11:55,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:11:55,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:11:51" (1/3) ... [2020-10-24 23:11:55,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e60104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:11:55, skipping insertion in model container [2020-10-24 23:11:55,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:51" (2/3) ... [2020-10-24 23:11:55,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e60104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:11:55, skipping insertion in model container [2020-10-24 23:11:55,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:11:55" (3/3) ... [2020-10-24 23:11:55,526 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-10-24 23:11:55,539 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:11:55,544 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:11:55,558 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:11:55,588 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:11:55,588 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:11:55,588 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:11:55,588 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:11:55,588 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:11:55,588 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:11:55,588 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:11:55,589 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:11:55,611 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-24 23:11:55,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-24 23:11:55,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:11:55,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:11:55,620 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:11:55,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:11:55,626 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2020-10-24 23:11:55,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:11:55,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353856004] [2020-10-24 23:11:55,637 INFO L95 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 [2020-10-24 23:11:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:11:56,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 23:11:56,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:11:56,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:11:56,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:11:56,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:11:56,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353856004] [2020-10-24 23:11:56,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:11:56,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 23:11:56,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729528094] [2020-10-24 23:11:56,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:11:56,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:11:56,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:11:56,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:11:56,091 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-10-24 23:11:56,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:11:56,117 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2020-10-24 23:11:56,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:11:56,118 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-24 23:11:56,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:11:56,130 INFO L225 Difference]: With dead ends: 105 [2020-10-24 23:11:56,131 INFO L226 Difference]: Without dead ends: 50 [2020-10-24 23:11:56,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:11:56,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-24 23:11:56,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-24 23:11:56,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-24 23:11:56,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2020-10-24 23:11:56,184 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2020-10-24 23:11:56,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:11:56,185 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2020-10-24 23:11:56,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:11:56,186 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-10-24 23:11:56,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 23:11:56,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:11:56,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:11:56,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 23:11:56,401 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:11:56,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:11:56,404 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2020-10-24 23:11:56,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:11:56,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177112963] [2020-10-24 23:11:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-24 23:11:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:11:56,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-24 23:11:56,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:11:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:11:57,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:11:57,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:11:57,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177112963] [2020-10-24 23:11:57,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:11:57,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-24 23:11:57,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478029742] [2020-10-24 23:11:57,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 23:11:57,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:11:57,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 23:11:57,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 23:11:57,138 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand 6 states. [2020-10-24 23:11:59,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:11:59,848 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2020-10-24 23:12:00,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 23:12:00,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-24 23:12:00,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:12:00,251 INFO L225 Difference]: With dead ends: 68 [2020-10-24 23:12:00,252 INFO L226 Difference]: Without dead ends: 26 [2020-10-24 23:12:00,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-24 23:12:00,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-24 23:12:00,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 17. [2020-10-24 23:12:00,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-24 23:12:00,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-10-24 23:12:00,257 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2020-10-24 23:12:00,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:12:00,257 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-10-24 23:12:00,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 23:12:00,258 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-10-24 23:12:00,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 23:12:00,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:12:00,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:12:00,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 23:12:00,470 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:12:00,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:12:00,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2020-10-24 23:12:00,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:12:00,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323277912] [2020-10-24 23:12:00,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-24 23:12:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:12:00,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-24 23:12:00,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:12:00,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:12:00,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:12:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:12:00,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323277912] [2020-10-24 23:12:00,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:12:00,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-10-24 23:12:00,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775480391] [2020-10-24 23:12:00,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 23:12:00,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:12:00,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 23:12:00,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-24 23:12:00,666 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 7 states. [2020-10-24 23:12:02,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:12:02,553 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-10-24 23:12:02,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 23:12:02,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-24 23:12:02,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:12:02,556 INFO L225 Difference]: With dead ends: 29 [2020-10-24 23:12:02,556 INFO L226 Difference]: Without dead ends: 26 [2020-10-24 23:12:02,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-24 23:12:02,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-24 23:12:02,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2020-10-24 23:12:02,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-24 23:12:02,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-10-24 23:12:02,564 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2020-10-24 23:12:02,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:12:02,565 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-10-24 23:12:02,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 23:12:02,568 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-10-24 23:12:02,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 23:12:02,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:12:02,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:12:02,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 23:12:02,781 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:12:02,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:12:02,782 INFO L82 PathProgramCache]: Analyzing trace with hash 239121058, now seen corresponding path program 1 times [2020-10-24 23:12:02,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:12:02,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122803109] [2020-10-24 23:12:02,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-24 23:12:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:12:03,918 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:12:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:12:04,956 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:12:05,068 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 23:12:05,069 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:12:05,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-24 23:12:05,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:12:05 BoogieIcfgContainer [2020-10-24 23:12:05,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:12:05,311 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:12:05,311 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:12:05,311 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:12:05,312 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:11:55" (3/4) ... [2020-10-24 23:12:05,314 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 23:12:05,372 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 23:12:05,373 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:12:05,375 INFO L168 Benchmark]: Toolchain (without parser) took 14229.33 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 27.1 MB in the beginning and 27.8 MB in the end (delta: -779.4 kB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-10-24 23:12:05,376 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 50.3 MB. Free memory is still 32.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:12:05,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.47 ms. Allocated memory is still 50.3 MB. Free memory was 26.5 MB in the beginning and 24.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-10-24 23:12:05,378 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.10 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 24.6 MB in the beginning and 46.3 MB in the end (delta: -21.8 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-24 23:12:05,379 INFO L168 Benchmark]: Boogie Preprocessor took 93.54 ms. Allocated memory is still 62.9 MB. Free memory was 46.3 MB in the beginning and 44.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:12:05,379 INFO L168 Benchmark]: RCFGBuilder took 3850.24 ms. Allocated memory is still 62.9 MB. Free memory was 44.2 MB in the beginning and 32.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-10-24 23:12:05,380 INFO L168 Benchmark]: TraceAbstraction took 9790.82 ms. Allocated memory is still 62.9 MB. Free memory was 32.2 MB in the beginning and 30.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. [2020-10-24 23:12:05,381 INFO L168 Benchmark]: Witness Printer took 61.95 ms. Allocated memory is still 62.9 MB. Free memory was 30.4 MB in the beginning and 27.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:12:05,386 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 50.3 MB. Free memory is still 32.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.47 ms. Allocated memory is still 50.3 MB. Free memory was 26.5 MB in the beginning and 24.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.10 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 24.6 MB in the beginning and 46.3 MB in the end (delta: -21.8 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 93.54 ms. Allocated memory is still 62.9 MB. Free memory was 46.3 MB in the beginning and 44.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3850.24 ms. Allocated memory is still 62.9 MB. Free memory was 44.2 MB in the beginning and 32.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9790.82 ms. Allocated memory is still 62.9 MB. Free memory was 32.2 MB in the beginning and 30.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. * Witness Printer took 61.95 ms. Allocated memory is still 62.9 MB. Free memory was 30.4 MB in the beginning and 27.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L151] double x = -0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND FALSE !((ix0 & 0x7ff00000) == 0x7ff00000) VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L38] COND TRUE ix0 <= 0 VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L39] COND FALSE !(((ix0 & (~sign)) | ix1) == 0) VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L41] COND TRUE ix0 < 0 [L42] return (x - x) / (x - x); VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L155] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_0730b.c", 3, "reach_error") VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 92 SDslu, 64 SDs, 0 SdLazy, 28 SolverSat, 3 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 3 QuantifiedInterpolants, 1306 SizeOfPredicates, 10 NumberOfNonLiveVariables, 136 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...