./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0920a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.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-newlib/double_req_bl_0920a.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 77b3a373bd5532f9284ea33fd7b532cf320a99fa .......................................................................................................................................................................................................................................................................................................................................................... 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_1.3.100.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-newlib/double_req_bl_0920a.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 77b3a373bd5532f9284ea33fd7b532cf320a99fa ........................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-9a8b2e8 [2020-10-20 00:30:57,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:30:57,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:30:57,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:30:57,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:30:57,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:30:57,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:30:57,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:30:57,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:30:57,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:30:57,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:30:57,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:30:57,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:30:57,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:30:57,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:30:57,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:30:57,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:30:57,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:30:57,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:30:57,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:30:57,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:30:57,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:30:57,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:30:57,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:30:57,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:30:57,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:30:57,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:30:57,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:30:57,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:30:57,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:30:57,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:30:57,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:30:57,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:30:57,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:30:57,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:30:57,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:30:57,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:30:57,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:30:57,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:30:57,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:30:57,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:30:57,661 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:30:57,708 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:30:57,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:30:57,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:30:57,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:30:57,711 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:30:57,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:30:57,712 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:30:57,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:30:57,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:30:57,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:30:57,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:30:57,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:30:57,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:30:57,714 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:30:57,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:30:57,715 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:30:57,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:30:57,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:30:57,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:30:57,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:30:57,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:30:57,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:30:57,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:30:57,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:30:57,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:30:57,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:30:57,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:30:57,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:30:57,717 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:30:57,718 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(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 -> 77b3a373bd5532f9284ea33fd7b532cf320a99fa [2020-10-20 00:30:57,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:30:57,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:30:57,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:30:57,950 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:30:57,951 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:30:57,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2020-10-20 00:30:58,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/206fafeef/082094ddf1b64aa4aa1c0ee512b17253/FLAG5c0824771 [2020-10-20 00:30:58,544 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:30:58,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2020-10-20 00:30:58,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/206fafeef/082094ddf1b64aa4aa1c0ee512b17253/FLAG5c0824771 [2020-10-20 00:30:58,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/206fafeef/082094ddf1b64aa4aa1c0ee512b17253 [2020-10-20 00:30:58,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:30:58,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:30:58,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:30:58,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:30:58,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:30:58,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:30:58" (1/1) ... [2020-10-20 00:30:58,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a32684e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:58, skipping insertion in model container [2020-10-20 00:30:58,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:30:58" (1/1) ... [2020-10-20 00:30:58,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:30:58,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:30:59,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:30:59,259 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:30:59,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:30:59,369 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:30:59,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59 WrapperNode [2020-10-20 00:30:59,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:30:59,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:30:59,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:30:59,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:30:59,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (1/1) ... [2020-10-20 00:30:59,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (1/1) ... [2020-10-20 00:30:59,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:30:59,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:30:59,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:30:59,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:30:59,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (1/1) ... [2020-10-20 00:30:59,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (1/1) ... [2020-10-20 00:30:59,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (1/1) ... [2020-10-20 00:30:59,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (1/1) ... [2020-10-20 00:30:59,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (1/1) ... [2020-10-20 00:30:59,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (1/1) ... [2020-10-20 00:30:59,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (1/1) ... [2020-10-20 00:30:59,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:30:59,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:30:59,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:30:59,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:30:59,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (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 [2020-10-20 00:30:59,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:30:59,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:30:59,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:30:59,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:30:59,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:30:59,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:30:59,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:30:59,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:30:59,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:30:59,984 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:30:59,984 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-20 00:30:59,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:30:59 BoogieIcfgContainer [2020-10-20 00:30:59,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:30:59,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:30:59,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:30:59,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:30:59,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:30:58" (1/3) ... [2020-10-20 00:30:59,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623df527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:30:59, skipping insertion in model container [2020-10-20 00:30:59,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:59" (2/3) ... [2020-10-20 00:30:59,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623df527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:30:59, skipping insertion in model container [2020-10-20 00:30:59,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:30:59" (3/3) ... [2020-10-20 00:30:59,997 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0920a.c [2020-10-20 00:31:00,011 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:31:00,020 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:31:00,036 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:31:00,064 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:31:00,064 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:31:00,064 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:31:00,065 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:31:00,067 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:31:00,067 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:31:00,067 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:31:00,068 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:31:00,090 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-20 00:31:00,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:31:00,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:31:00,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:31:00,102 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:31:00,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:31:00,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1394505008, now seen corresponding path program 1 times [2020-10-20 00:31:00,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:31:00,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595089711] [2020-10-20 00:31:00,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:31:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:31:00,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:31:00,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595089711] [2020-10-20 00:31:00,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:31:00,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:31:00,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800010020] [2020-10-20 00:31:00,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:31:00,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:31:00,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:31:00,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:31:00,319 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-10-20 00:31:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:31:00,342 INFO L93 Difference]: Finished difference Result 70 states and 111 transitions. [2020-10-20 00:31:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:31:00,344 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-20 00:31:00,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:31:00,356 INFO L225 Difference]: With dead ends: 70 [2020-10-20 00:31:00,356 INFO L226 Difference]: Without dead ends: 32 [2020-10-20 00:31:00,360 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 [2020-10-20 00:31:00,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-20 00:31:00,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-20 00:31:00,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 00:31:00,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2020-10-20 00:31:00,403 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 12 [2020-10-20 00:31:00,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:31:00,403 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2020-10-20 00:31:00,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:31:00,404 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2020-10-20 00:31:00,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:31:00,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:31:00,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:31:00,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:31:00,406 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:31:00,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:31:00,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1007782307, now seen corresponding path program 1 times [2020-10-20 00:31:00,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:31:00,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013872061] [2020-10-20 00:31:00,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:31:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:31:00,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:31:00,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013872061] [2020-10-20 00:31:00,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:31:00,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:31:00,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868972824] [2020-10-20 00:31:00,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:31:00,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:31:00,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:31:00,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:31:00,496 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand 3 states. [2020-10-20 00:31:00,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:31:00,515 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2020-10-20 00:31:00,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:31:00,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-20 00:31:00,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:31:00,517 INFO L225 Difference]: With dead ends: 57 [2020-10-20 00:31:00,517 INFO L226 Difference]: Without dead ends: 32 [2020-10-20 00:31:00,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:31:00,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-20 00:31:00,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-20 00:31:00,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 00:31:00,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2020-10-20 00:31:00,525 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 13 [2020-10-20 00:31:00,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:31:00,525 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2020-10-20 00:31:00,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:31:00,526 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2020-10-20 00:31:00,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 00:31:00,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:31:00,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:31:00,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:31:00,527 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:31:00,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:31:00,528 INFO L82 PathProgramCache]: Analyzing trace with hash 32951480, now seen corresponding path program 1 times [2020-10-20 00:31:00,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:31:00,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632165578] [2020-10-20 00:31:00,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:31:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:31:00,652 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:31:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:31:00,707 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:31:00,747 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:31:00,748 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:31:00,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 00:31:00,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:31:00 BoogieIcfgContainer [2020-10-20 00:31:00,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:31:00,841 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:31:00,841 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:31:00,842 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:31:00,842 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:30:59" (3/4) ... [2020-10-20 00:31:00,848 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:31:00,848 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:31:00,854 INFO L168 Benchmark]: Toolchain (without parser) took 1956.37 ms. Allocated memory was 35.1 MB in the beginning and 48.2 MB in the end (delta: 13.1 MB). Free memory was 12.6 MB in the beginning and 10.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 14.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:31:00,856 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 33.6 MB. Free memory was 19.0 MB in the beginning and 19.0 MB in the end (delta: 31.1 kB). Peak memory consumption was 31.1 kB. Max. memory is 14.3 GB. [2020-10-20 00:31:00,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 470.24 ms. Allocated memory was 35.1 MB in the beginning and 44.6 MB in the end (delta: 9.4 MB). Free memory was 11.8 MB in the beginning and 21.7 MB in the end (delta: -9.9 MB). Peak memory consumption was 11.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:31:00,866 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.35 ms. Allocated memory is still 44.6 MB. Free memory was 21.7 MB in the beginning and 19.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:31:00,867 INFO L168 Benchmark]: Boogie Preprocessor took 52.04 ms. Allocated memory is still 44.6 MB. Free memory was 19.2 MB in the beginning and 17.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:31:00,869 INFO L168 Benchmark]: RCFGBuilder took 510.79 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 17.2 MB in the beginning and 18.2 MB in the end (delta: -998.6 kB). Peak memory consumption was 7.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:31:00,874 INFO L168 Benchmark]: TraceAbstraction took 852.67 ms. Allocated memory was 46.1 MB in the beginning and 48.2 MB in the end (delta: 2.1 MB). Free memory was 17.7 MB in the beginning and 11.5 MB in the end (delta: 6.2 MB). Peak memory consumption was 8.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:31:00,875 INFO L168 Benchmark]: Witness Printer took 6.76 ms. Allocated memory is still 48.2 MB. Free memory was 11.5 MB in the beginning and 10.9 MB in the end (delta: 634.6 kB). Peak memory consumption was 634.6 kB. Max. memory is 14.3 GB. [2020-10-20 00:31:00,887 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 33.6 MB. Free memory was 19.0 MB in the beginning and 19.0 MB in the end (delta: 31.1 kB). Peak memory consumption was 31.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 470.24 ms. Allocated memory was 35.1 MB in the beginning and 44.6 MB in the end (delta: 9.4 MB). Free memory was 11.8 MB in the beginning and 21.7 MB in the end (delta: -9.9 MB). Peak memory consumption was 11.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 52.35 ms. Allocated memory is still 44.6 MB. Free memory was 21.7 MB in the beginning and 19.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 52.04 ms. Allocated memory is still 44.6 MB. Free memory was 19.2 MB in the beginning and 17.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 510.79 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 17.2 MB in the beginning and 18.2 MB in the end (delta: -998.6 kB). Peak memory consumption was 7.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 852.67 ms. Allocated memory was 46.1 MB in the beginning and 48.2 MB in the end (delta: 2.1 MB). Free memory was 17.7 MB in the beginning and 11.5 MB in the end (delta: 6.2 MB). Peak memory consumption was 8.3 MB. Max. memory is 14.3 GB. * Witness Printer took 6.76 ms. Allocated memory is still 48.2 MB. Free memory was 11.5 MB in the beginning and 10.9 MB in the end (delta: 634.6 kB). Peak memory consumption was 634.6 kB. Max. memory is 14.3 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 someBinaryDOUBLEComparisonOperation at line 139, overapproximation of bitwiseAnd at line 135, overapproximation of someBinaryArithmeticDOUBLEoperation at line 74. Possible FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L148] double x = __VERIFIER_nondet_double(); [L150] EXPR x < 0 && isfinite_double(x) [L129] __int32_t hx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L131] ieee_double_shape_type gh_u; [L132] gh_u.value = (x) [L133] EXPR gh_u.parts.msw [L133] (hx) = gh_u.parts.msw [L135] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L150] EXPR x < 0 && isfinite_double(x) VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L150] COND TRUE (x < 0 && isfinite_double(x)) [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L60] COND FALSE !(hx < 0x00100000) VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L73] COND TRUE hx >= 0x7ff00000 [L74] return x + x; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L152] double res = __ieee754_log(x); [L139] return x != x; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L155] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_0920a.c", 3, "reach_error") VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 91 SDtfs, 0 SDslu, 38 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 277 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 0.1.25-9a8b2e8 [2020-10-20 00:31:03,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:31:03,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:31:03,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:31:03,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:31:03,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:31:03,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:31:03,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:31:03,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:31:03,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:31:03,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:31:03,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:31:03,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:31:03,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:31:03,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:31:03,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:31:03,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:31:03,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:31:03,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:31:03,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:31:03,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:31:03,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:31:03,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:31:03,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:31:03,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:31:03,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:31:03,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:31:03,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:31:03,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:31:03,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:31:03,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:31:03,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:31:03,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:31:03,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:31:03,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:31:03,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:31:03,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:31:03,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:31:03,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:31:03,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:31:03,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:31:03,129 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:31:03,175 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:31:03,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:31:03,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:31:03,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:31:03,178 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:31:03,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:31:03,179 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:31:03,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:31:03,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:31:03,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:31:03,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:31:03,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:31:03,181 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:31:03,181 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:31:03,182 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:31:03,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:31:03,182 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:31:03,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:31:03,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:31:03,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:31:03,183 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:31:03,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:31:03,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:31:03,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:31:03,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:31:03,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:31:03,185 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:31:03,185 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:31:03,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:31:03,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:31:03,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:31:03,186 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(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 -> 77b3a373bd5532f9284ea33fd7b532cf320a99fa [2020-10-20 00:31:03,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:31:03,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:31:03,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:31:03,424 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:31:03,424 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:31:03,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2020-10-20 00:31:03,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfdf33cca/a3a5f1f03c174fc08f56089ef84e2a56/FLAG10759af2c [2020-10-20 00:31:03,970 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:31:03,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2020-10-20 00:31:03,979 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfdf33cca/a3a5f1f03c174fc08f56089ef84e2a56/FLAG10759af2c [2020-10-20 00:31:04,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfdf33cca/a3a5f1f03c174fc08f56089ef84e2a56 [2020-10-20 00:31:04,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:31:04,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:31:04,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:31:04,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:31:04,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:31:04,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:31:04" (1/1) ... [2020-10-20 00:31:04,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e5bb109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:31:04, skipping insertion in model container [2020-10-20 00:31:04,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:31:04" (1/1) ... [2020-10-20 00:31:04,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:31:04,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:31:04,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:31:04,733 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:31:04,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:31:04,824 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:31:04,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:31:04 WrapperNode [2020-10-20 00:31:04,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:31:04,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:31:04,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:31:04,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:31:04,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:31:04" (1/1) ... [2020-10-20 00:31:04,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:31:04" (1/1) ... [2020-10-20 00:31:04,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:31:04,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:31:04,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:31:04,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:31:04,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:31:04" (1/1) ... [2020-10-20 00:31:04,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:31:04" (1/1) ... [2020-10-20 00:31:04,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:31:04" (1/1) ... [2020-10-20 00:31:04,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:31:04" (1/1) ... [2020-10-20 00:31:04,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:31:04" (1/1) ... [2020-10-20 00:31:04,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:31:04" (1/1) ... [2020-10-20 00:31:04,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:31:04" (1/1) ... [2020-10-20 00:31:04,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:31:04,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:31:04,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:31:04,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:31:04,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:31:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:31:05,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-20 00:31:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-20 00:31:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:31:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:31:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:31:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:31:05,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:31:05,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:31:05,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:31:30,866 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:31:30,867 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-20 00:31:30,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:31:30 BoogieIcfgContainer [2020-10-20 00:31:30,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:31:30,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:31:30,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:31:30,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:31:30,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:31:04" (1/3) ... [2020-10-20 00:31:30,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e6e302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:31:30, skipping insertion in model container [2020-10-20 00:31:30,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:31:04" (2/3) ... [2020-10-20 00:31:30,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e6e302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:31:30, skipping insertion in model container [2020-10-20 00:31:30,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:31:30" (3/3) ... [2020-10-20 00:31:30,877 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0920a.c [2020-10-20 00:31:30,886 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:31:30,894 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:31:30,905 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:31:30,926 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:31:30,927 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:31:30,927 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:31:30,927 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:31:30,927 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:31:30,927 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:31:30,927 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:31:30,928 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:31:30,940 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-20 00:31:30,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:31:30,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:31:30,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:31:30,947 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:31:30,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:31:30,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1394505008, now seen corresponding path program 1 times [2020-10-20 00:31:30,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:31:30,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157169079] [2020-10-20 00:31:30,965 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 [2020-10-20 00:31:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:31:31,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:31:31,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:31:31,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:31:31,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:31:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:31:31,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157169079] [2020-10-20 00:31:31,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:31:31,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:31:31,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956509117] [2020-10-20 00:31:31,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:31:31,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:31:31,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:31:31,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:31:31,307 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-10-20 00:31:31,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:31:31,326 INFO L93 Difference]: Finished difference Result 70 states and 111 transitions. [2020-10-20 00:31:31,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:31:31,327 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-20 00:31:31,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:31:31,338 INFO L225 Difference]: With dead ends: 70 [2020-10-20 00:31:31,338 INFO L226 Difference]: Without dead ends: 32 [2020-10-20 00:31:31,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:31:31,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-20 00:31:31,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-20 00:31:31,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 00:31:31,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2020-10-20 00:31:31,376 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 12 [2020-10-20 00:31:31,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:31:31,376 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2020-10-20 00:31:31,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:31:31,377 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2020-10-20 00:31:31,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:31:31,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:31:31,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:31:31,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:31:31,579 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:31:31,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:31:31,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1007782307, now seen corresponding path program 1 times [2020-10-20 00:31:31,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:31:31,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577721961] [2020-10-20 00:31:31,582 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 [2020-10-20 00:31:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:31:31,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 00:31:31,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:31:31,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:31:31,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:31:31,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:31:31,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577721961] [2020-10-20 00:31:31,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:31:31,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-20 00:31:31,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354122144] [2020-10-20 00:31:31,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:31:31,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:31:31,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:31:31,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:31:31,779 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand 3 states. [2020-10-20 00:31:31,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:31:31,828 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2020-10-20 00:31:31,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:31:31,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-20 00:31:31,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:31:31,831 INFO L225 Difference]: With dead ends: 57 [2020-10-20 00:31:31,831 INFO L226 Difference]: Without dead ends: 32 [2020-10-20 00:31:31,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:31:31,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-20 00:31:31,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-20 00:31:31,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 00:31:31,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2020-10-20 00:31:31,844 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 13 [2020-10-20 00:31:31,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:31:31,845 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2020-10-20 00:31:31,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:31:31,846 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2020-10-20 00:31:31,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 00:31:31,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:31:31,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:31:32,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:31:32,063 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:31:32,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:31:32,064 INFO L82 PathProgramCache]: Analyzing trace with hash 32951480, now seen corresponding path program 1 times [2020-10-20 00:31:32,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:31:32,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181682588] [2020-10-20 00:31:32,066 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 [2020-10-20 00:31:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:31:32,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 00:31:32,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:31:32,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:31:32,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:31:32,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:31:32,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181682588] [2020-10-20 00:31:32,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:31:32,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-10-20 00:31:32,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634531929] [2020-10-20 00:31:32,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 00:31:32,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:31:32,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 00:31:32,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:31:32,793 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand 10 states. [2020-10-20 00:31:39,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:31:39,180 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2020-10-20 00:31:39,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 00:31:39,227 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-20 00:31:39,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:31:39,229 INFO L225 Difference]: With dead ends: 37 [2020-10-20 00:31:39,229 INFO L226 Difference]: Without dead ends: 19 [2020-10-20 00:31:39,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-20 00:31:39,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-20 00:31:39,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-20 00:31:39,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-20 00:31:39,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-20 00:31:39,235 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2020-10-20 00:31:39,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:31:39,235 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-20 00:31:39,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 00:31:39,236 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-20 00:31:39,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 00:31:39,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:31:39,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:31:39,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 00:31:39,440 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:31:39,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:31:39,441 INFO L82 PathProgramCache]: Analyzing trace with hash -677236169, now seen corresponding path program 1 times [2020-10-20 00:31:39,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:31:39,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848044164] [2020-10-20 00:31:39,442 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 [2020-10-20 00:31:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:31:40,739 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:31:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:31:42,140 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:31:42,285 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 00:31:42,285 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:31:42,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 00:31:42,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:31:42 BoogieIcfgContainer [2020-10-20 00:31:42,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:31:42,633 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:31:42,633 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:31:42,634 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:31:42,635 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:31:30" (3/4) ... [2020-10-20 00:31:42,637 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:31:42,781 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:31:42,781 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:31:42,783 INFO L168 Benchmark]: Toolchain (without parser) took 38444.46 ms. Allocated memory was 34.6 MB in the beginning and 51.9 MB in the end (delta: 17.3 MB). Free memory was 11.1 MB in the beginning and 24.6 MB in the end (delta: -13.5 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:31:42,783 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 33.0 MB. Free memory was 18.0 MB in the beginning and 18.0 MB in the end (delta: 40.3 kB). Peak memory consumption was 40.3 kB. Max. memory is 14.3 GB. [2020-10-20 00:31:42,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 479.86 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 10.2 MB in the beginning and 17.7 MB in the end (delta: -7.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:31:42,787 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.71 ms. Allocated memory is still 43.5 MB. Free memory was 17.6 MB in the beginning and 15.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:31:42,787 INFO L168 Benchmark]: Boogie Preprocessor took 57.81 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 15.3 MB in the beginning and 24.4 MB in the end (delta: -9.2 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:31:42,789 INFO L168 Benchmark]: RCFGBuilder took 25929.42 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 24.2 MB in the beginning and 25.7 MB in the end (delta: -1.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:31:42,789 INFO L168 Benchmark]: TraceAbstraction took 11763.00 ms. Allocated memory was 45.6 MB in the beginning and 51.9 MB in the end (delta: 6.3 MB). Free memory was 25.2 MB in the beginning and 29.6 MB in the end (delta: -4.4 MB). Peak memory consumption was 19.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:31:42,792 INFO L168 Benchmark]: Witness Printer took 147.52 ms. Allocated memory is still 51.9 MB. Free memory was 29.6 MB in the beginning and 24.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:31:42,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 33.0 MB. Free memory was 18.0 MB in the beginning and 18.0 MB in the end (delta: 40.3 kB). Peak memory consumption was 40.3 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 479.86 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 10.2 MB in the beginning and 17.7 MB in the end (delta: -7.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 55.71 ms. Allocated memory is still 43.5 MB. Free memory was 17.6 MB in the beginning and 15.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 57.81 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 15.3 MB in the beginning and 24.4 MB in the end (delta: -9.2 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 25929.42 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 24.2 MB in the beginning and 25.7 MB in the end (delta: -1.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 11763.00 ms. Allocated memory was 45.6 MB in the beginning and 51.9 MB in the end (delta: 6.3 MB). Free memory was 25.2 MB in the beginning and 29.6 MB in the end (delta: -4.4 MB). Peak memory consumption was 19.2 MB. Max. memory is 14.3 GB. * Witness Printer took 147.52 ms. Allocated memory is still 51.9 MB. Free memory was 29.6 MB in the beginning and 24.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 14.3 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: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L148] double x = __VERIFIER_nondet_double(); [L150] EXPR x < 0 && isfinite_double(x) [L129] __int32_t hx; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L131] ieee_double_shape_type gh_u; [L132] gh_u.value = (x) [L133] EXPR gh_u.parts.msw [L133] (hx) = gh_u.parts.msw [L135] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L150] EXPR x < 0 && isfinite_double(x) VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L150] COND TRUE (x < 0 && isfinite_double(x)) [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L60] COND TRUE hx < 0x00100000 VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L61] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L62] return -two54_log / zero; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L152] double res = __ieee754_log(x); [L139] return x != x; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L155] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_0920a.c", 3, "reach_error") VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 74 SDslu, 63 SDs, 0 SdLazy, 24 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 78 ConstructedInterpolants, 17 QuantifiedInterpolants, 4426 SizeOfPredicates, 8 NumberOfNonLiveVariables, 195 ConjunctsInSsa, 11 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...