./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_0730b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 ........................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.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_0730b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 ....................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:30:19,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:30:19,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:30:19,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:30:19,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:30:19,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:30:19,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:30:19,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:30:19,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:30:19,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:30:19,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:30:19,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:30:19,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:30:19,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:30:19,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:30:19,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:30:19,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:30:19,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:30:19,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:30:19,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:30:19,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:30:19,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:30:19,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:30:19,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:30:19,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:30:19,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:30:19,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:30:19,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:30:19,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:30:19,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:30:19,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:30:19,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:30:19,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:30:19,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:30:19,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:30:19,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:30:19,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:30:19,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:30:19,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:30:19,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:30:19,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:30:19,623 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:30:19,657 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:30:19,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:30:19,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:30:19,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:30:19,659 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:30:19,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:30:19,660 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:30:19,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:30:19,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:30:19,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:30:19,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:30:19,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:30:19,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:30:19,661 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:30:19,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:30:19,661 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:30:19,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:30:19,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:30:19,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:30:19,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:30:19,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:30:19,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:30:19,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:30:19,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:30:19,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:30:19,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:30:19,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:30:19,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:30:19,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:30:19,664 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 -> 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 [2020-10-20 00:30:19,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:30:19,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:30:19,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:30:19,887 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:30:19,887 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:30:19,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-10-20 00:30:19,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/419041e95/f04178962ff741409227c91422c0e2cc/FLAG66a64ad2d [2020-10-20 00:30:20,468 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:30:20,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-10-20 00:30:20,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/419041e95/f04178962ff741409227c91422c0e2cc/FLAG66a64ad2d [2020-10-20 00:30:20,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/419041e95/f04178962ff741409227c91422c0e2cc [2020-10-20 00:30:20,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:30:20,892 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:30:20,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:30:20,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:30:20,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:30:20,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:30:20" (1/1) ... [2020-10-20 00:30:20,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5382ae96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:20, skipping insertion in model container [2020-10-20 00:30:20,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:30:20" (1/1) ... [2020-10-20 00:30:20,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:30:20,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:30:21,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:30:21,260 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:30:21,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:30:21,380 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:30:21,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21 WrapperNode [2020-10-20 00:30:21,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:30:21,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:30:21,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:30:21,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:30:21,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (1/1) ... [2020-10-20 00:30:21,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (1/1) ... [2020-10-20 00:30:21,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:30:21,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:30:21,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:30:21,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:30:21,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (1/1) ... [2020-10-20 00:30:21,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (1/1) ... [2020-10-20 00:30:21,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (1/1) ... [2020-10-20 00:30:21,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (1/1) ... [2020-10-20 00:30:21,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (1/1) ... [2020-10-20 00:30:21,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (1/1) ... [2020-10-20 00:30:21,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (1/1) ... [2020-10-20 00:30:21,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:30:21,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:30:21,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:30:21,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:30:21,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (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 00:30:21,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:30:21,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:30:21,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:30:21,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:30:21,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:30:21,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:30:21,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:30:21,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:30:21,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:30:22,142 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:30:22,142 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-20 00:30:22,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:30:22 BoogieIcfgContainer [2020-10-20 00:30:22,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:30:22,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:30:22,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:30:22,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:30:22,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:30:20" (1/3) ... [2020-10-20 00:30:22,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c87c18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:30:22, skipping insertion in model container [2020-10-20 00:30:22,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (2/3) ... [2020-10-20 00:30:22,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c87c18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:30:22, skipping insertion in model container [2020-10-20 00:30:22,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:30:22" (3/3) ... [2020-10-20 00:30:22,153 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-10-20 00:30:22,165 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:30:22,173 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:30:22,188 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:30:22,213 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:30:22,213 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:30:22,213 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:30:22,214 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:30:22,214 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:30:22,214 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:30:22,214 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:30:22,214 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:30:22,229 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-20 00:30:22,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:30:22,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:30:22,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:30:22,236 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:30:22,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:30:22,241 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2020-10-20 00:30:22,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:30:22,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041499145] [2020-10-20 00:30:22,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:30:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:30:22,387 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 00:30:22,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041499145] [2020-10-20 00:30:22,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:30:22,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:30:22,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29794070] [2020-10-20 00:30:22,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:30:22,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:30:22,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:30:22,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:30:22,409 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-10-20 00:30:22,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:30:22,431 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2020-10-20 00:30:22,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:30:22,432 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 00:30:22,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:30:22,456 INFO L225 Difference]: With dead ends: 105 [2020-10-20 00:30:22,456 INFO L226 Difference]: Without dead ends: 50 [2020-10-20 00:30:22,459 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 00:30:22,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-20 00:30:22,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-20 00:30:22,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-20 00:30:22,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2020-10-20 00:30:22,501 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2020-10-20 00:30:22,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:30:22,502 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2020-10-20 00:30:22,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:30:22,502 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-10-20 00:30:22,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:30:22,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:30:22,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:30:22,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:30:22,504 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:30:22,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:30:22,504 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2020-10-20 00:30:22,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:30:22,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859959630] [2020-10-20 00:30:22,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:30:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:30:22,550 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:30:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:30:22,577 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:30:22,607 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:30:22,607 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:30:22,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:30:22,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:30:22 BoogieIcfgContainer [2020-10-20 00:30:22,644 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:30:22,644 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:30:22,644 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:30:22,645 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:30:22,645 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:30:22" (3/4) ... [2020-10-20 00:30:22,649 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:30:22,649 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:30:22,651 INFO L168 Benchmark]: Toolchain (without parser) took 1763.98 ms. Allocated memory was 43.0 MB in the beginning and 48.2 MB in the end (delta: 5.2 MB). Free memory was 22.7 MB in the beginning and 16.5 MB in the end (delta: 6.2 MB). Peak memory consumption was 11.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:22,652 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 32.5 MB. Free memory was 11.5 MB in the beginning and 11.5 MB in the end (delta: 52.8 kB). Peak memory consumption was 52.8 kB. Max. memory is 14.3 GB. [2020-10-20 00:30:22,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 488.99 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 21.9 MB in the beginning and 20.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:22,654 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.04 ms. Allocated memory is still 43.5 MB. Free memory was 20.3 MB in the beginning and 17.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:22,655 INFO L168 Benchmark]: Boogie Preprocessor took 41.04 ms. Allocated memory is still 43.5 MB. Free memory was 17.8 MB in the beginning and 15.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:22,656 INFO L168 Benchmark]: RCFGBuilder took 643.70 ms. Allocated memory was 43.5 MB in the beginning and 46.7 MB in the end (delta: 3.1 MB). Free memory was 15.6 MB in the beginning and 25.8 MB in the end (delta: -10.2 MB). Peak memory consumption was 9.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:22,657 INFO L168 Benchmark]: TraceAbstraction took 498.32 ms. Allocated memory was 46.7 MB in the beginning and 48.2 MB in the end (delta: 1.6 MB). Free memory was 25.5 MB in the beginning and 17.3 MB in the end (delta: 8.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:22,658 INFO L168 Benchmark]: Witness Printer took 4.53 ms. Allocated memory is still 48.2 MB. Free memory was 16.9 MB in the beginning and 16.5 MB in the end (delta: 358.1 kB). Peak memory consumption was 358.1 kB. Max. memory is 14.3 GB. [2020-10-20 00:30:22,663 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 32.5 MB. Free memory was 11.5 MB in the beginning and 11.5 MB in the end (delta: 52.8 kB). Peak memory consumption was 52.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 488.99 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 21.9 MB in the beginning and 20.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 76.04 ms. Allocated memory is still 43.5 MB. Free memory was 20.3 MB in the beginning and 17.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 41.04 ms. Allocated memory is still 43.5 MB. Free memory was 17.8 MB in the beginning and 15.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 643.70 ms. Allocated memory was 43.5 MB in the beginning and 46.7 MB in the end (delta: 3.1 MB). Free memory was 15.6 MB in the beginning and 25.8 MB in the end (delta: -10.2 MB). Peak memory consumption was 9.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 498.32 ms. Allocated memory was 46.7 MB in the beginning and 48.2 MB in the end (delta: 1.6 MB). Free memory was 25.5 MB in the beginning and 17.3 MB in the end (delta: 8.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. * Witness Printer took 4.53 ms. Allocated memory is still 48.2 MB. Free memory was 16.9 MB in the beginning and 16.5 MB in the end (delta: 358.1 kB). Peak memory consumption was 358.1 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 someUnaryDOUBLEoperation at line 151, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 155. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L151] double x = -0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L155] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_0730b.c", 3, "reach_error") VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:30:24,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:30:24,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:30:24,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:30:24,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:30:24,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:30:24,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:30:24,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:30:24,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:30:24,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:30:24,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:30:24,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:30:24,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:30:24,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:30:24,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:30:24,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:30:24,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:30:24,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:30:24,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:30:24,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:30:24,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:30:24,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:30:24,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:30:24,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:30:24,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:30:24,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:30:24,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:30:24,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:30:24,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:30:24,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:30:24,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:30:24,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:30:24,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:30:24,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:30:24,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:30:24,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:30:24,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:30:24,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:30:24,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:30:24,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:30:24,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:30:24,939 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:30:24,984 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:30:24,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:30:24,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:30:24,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:30:24,988 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:30:24,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:30:24,988 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:30:24,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:30:24,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:30:24,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:30:24,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:30:24,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:30:24,991 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:30:24,991 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:30:24,992 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:30:24,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:30:24,992 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:30:24,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:30:24,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:30:24,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:30:24,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:30:24,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:30:24,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:30:24,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:30:24,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:30:24,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:30:24,996 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:30:24,996 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:30:24,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:30:24,997 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:30:24,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:30:24,997 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 -> 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 [2020-10-20 00:30:25,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:30:25,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:30:25,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:30:25,253 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:30:25,253 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:30:25,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-10-20 00:30:25,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6f47748/1a4404b931c141a78926041083c47abf/FLAGcc4d9e564 [2020-10-20 00:30:25,831 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:30:25,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-10-20 00:30:25,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6f47748/1a4404b931c141a78926041083c47abf/FLAGcc4d9e564 [2020-10-20 00:30:26,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6f47748/1a4404b931c141a78926041083c47abf [2020-10-20 00:30:26,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:30:26,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:30:26,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:30:26,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:30:26,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:30:26,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30ffc03a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26, skipping insertion in model container [2020-10-20 00:30:26,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:30:26,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:30:26,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:30:26,598 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:30:26,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:30:26,668 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:30:26,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26 WrapperNode [2020-10-20 00:30:26,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:30:26,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:30:26,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:30:26,670 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:30:26,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:30:26,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:30:26,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:30:26,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:30:26,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:30:26,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:30:26,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:30:26,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:30:26,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (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 00:30:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-20 00:30:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-20 00:30:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:30:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:30:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:30:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:30:26,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:30:26,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:30:26,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:30:30,381 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:30:30,381 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-20 00:30:30,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:30:30 BoogieIcfgContainer [2020-10-20 00:30:30,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:30:30,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:30:30,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:30:30,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:30:30,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:30:26" (1/3) ... [2020-10-20 00:30:30,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73584a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:30:30, skipping insertion in model container [2020-10-20 00:30:30,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (2/3) ... [2020-10-20 00:30:30,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73584a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:30:30, skipping insertion in model container [2020-10-20 00:30:30,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:30:30" (3/3) ... [2020-10-20 00:30:30,392 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-10-20 00:30:30,404 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:30:30,413 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:30:30,434 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:30:30,458 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:30:30,459 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:30:30,459 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:30:30,459 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:30:30,459 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:30:30,460 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:30:30,460 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:30:30,460 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:30:30,476 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-20 00:30:30,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:30:30,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:30:30,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:30:30,483 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:30:30,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:30:30,488 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2020-10-20 00:30:30,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:30:30,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470036040] [2020-10-20 00:30:30,500 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 00:30:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:30:30,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:30:30,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:30:30,869 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 00:30:30,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:30:30,874 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 00:30:30,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470036040] [2020-10-20 00:30:30,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:30:30,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:30:30,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498233813] [2020-10-20 00:30:30,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:30:30,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:30:30,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:30:30,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:30:30,906 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-10-20 00:30:30,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:30:30,942 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2020-10-20 00:30:30,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:30:30,944 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 00:30:30,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:30:30,956 INFO L225 Difference]: With dead ends: 105 [2020-10-20 00:30:30,956 INFO L226 Difference]: Without dead ends: 50 [2020-10-20 00:30:30,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:30:30,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-20 00:30:30,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-20 00:30:31,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-20 00:30:31,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2020-10-20 00:30:31,003 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2020-10-20 00:30:31,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:30:31,003 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2020-10-20 00:30:31,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:30:31,003 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-10-20 00:30:31,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:30:31,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:30:31,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:30:31,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:30:31,218 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:30:31,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:30:31,218 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2020-10-20 00:30:31,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:30:31,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273868955] [2020-10-20 00:30:31,220 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 00:30:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:30:31,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 00:30:31,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:30:31,742 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 00:30:31,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:30:31,797 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 00:30:31,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273868955] [2020-10-20 00:30:31,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:30:31,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-20 00:30:31,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944958356] [2020-10-20 00:30:31,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 00:30:31,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:30:31,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 00:30:31,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:30:31,801 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand 6 states. [2020-10-20 00:30:32,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:30:32,910 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2020-10-20 00:30:33,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:30:33,269 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-20 00:30:33,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:30:33,270 INFO L225 Difference]: With dead ends: 59 [2020-10-20 00:30:33,270 INFO L226 Difference]: Without dead ends: 17 [2020-10-20 00:30:33,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 00:30:33,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-20 00:30:33,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-20 00:30:33,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-20 00:30:33,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-10-20 00:30:33,276 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2020-10-20 00:30:33,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:30:33,277 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-10-20 00:30:33,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 00:30:33,277 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-10-20 00:30:33,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:30:33,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:30:33,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:30:33,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:30:33,491 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:30:33,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:30:33,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2020-10-20 00:30:33,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:30:33,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508117844] [2020-10-20 00:30:33,494 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 00:30:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:30:33,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 00:30:33,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:30:33,641 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 00:30:33,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:30:33,682 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 00:30:33,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508117844] [2020-10-20 00:30:33,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:30:33,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-10-20 00:30:33,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232902110] [2020-10-20 00:30:33,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 00:30:33,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:30:33,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 00:30:33,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-20 00:30:33,685 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 7 states. [2020-10-20 00:30:35,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:30:35,422 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-10-20 00:30:35,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 00:30:35,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-20 00:30:35,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:30:35,423 INFO L225 Difference]: With dead ends: 29 [2020-10-20 00:30:35,424 INFO L226 Difference]: Without dead ends: 26 [2020-10-20 00:30:35,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:30:35,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-20 00:30:35,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2020-10-20 00:30:35,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-20 00:30:35,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-10-20 00:30:35,429 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2020-10-20 00:30:35,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:30:35,430 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-10-20 00:30:35,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 00:30:35,430 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-10-20 00:30:35,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:30:35,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:30:35,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:30:35,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 00:30:35,642 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:30:35,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:30:35,642 INFO L82 PathProgramCache]: Analyzing trace with hash 239121058, now seen corresponding path program 1 times [2020-10-20 00:30:35,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:30:35,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410763365] [2020-10-20 00:30:35,644 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 00:30:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:30:36,688 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:30:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:30:37,742 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:30:37,842 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 00:30:37,842 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:30:38,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 00:30:38,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:30:38 BoogieIcfgContainer [2020-10-20 00:30:38,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:30:38,086 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:30:38,087 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:30:38,087 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:30:38,088 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:30:30" (3/4) ... [2020-10-20 00:30:38,090 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:30:38,152 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:30:38,152 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:30:38,155 INFO L168 Benchmark]: Toolchain (without parser) took 11964.96 ms. Allocated memory was 35.1 MB in the beginning and 48.8 MB in the end (delta: 13.6 MB). Free memory was 12.7 MB in the beginning and 11.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 15.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:38,156 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 33.6 MB. Free memory was 18.7 MB in the beginning and 18.7 MB in the end (delta: 31.0 kB). Peak memory consumption was 31.0 kB. Max. memory is 14.3 GB. [2020-10-20 00:30:38,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 473.78 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 11.8 MB in the beginning and 20.8 MB in the end (delta: -9.0 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:38,158 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.03 ms. Allocated memory is still 44.0 MB. Free memory was 20.7 MB in the beginning and 18.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:38,158 INFO L168 Benchmark]: Boogie Preprocessor took 49.42 ms. Allocated memory is still 44.0 MB. Free memory was 18.4 MB in the beginning and 16.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:38,159 INFO L168 Benchmark]: RCFGBuilder took 3610.05 ms. Allocated memory was 44.0 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Free memory was 16.1 MB in the beginning and 12.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:38,160 INFO L168 Benchmark]: TraceAbstraction took 7701.52 ms. Allocated memory was 45.6 MB in the beginning and 48.8 MB in the end (delta: 3.1 MB). Free memory was 12.3 MB in the beginning and 14.7 MB in the end (delta: -2.4 MB). Peak memory consumption was 695.9 kB. Max. memory is 14.3 GB. [2020-10-20 00:30:38,161 INFO L168 Benchmark]: Witness Printer took 65.88 ms. Allocated memory is still 48.8 MB. Free memory was 14.7 MB in the beginning and 11.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:38,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 33.6 MB. Free memory was 18.7 MB in the beginning and 18.7 MB in the end (delta: 31.0 kB). Peak memory consumption was 31.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 473.78 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 11.8 MB in the beginning and 20.8 MB in the end (delta: -9.0 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 54.03 ms. Allocated memory is still 44.0 MB. Free memory was 20.7 MB in the beginning and 18.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 49.42 ms. Allocated memory is still 44.0 MB. Free memory was 18.4 MB in the beginning and 16.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 3610.05 ms. Allocated memory was 44.0 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Free memory was 16.1 MB in the beginning and 12.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 7701.52 ms. Allocated memory was 45.6 MB in the beginning and 48.8 MB in the end (delta: 3.1 MB). Free memory was 12.3 MB in the beginning and 14.7 MB in the end (delta: -2.4 MB). Peak memory consumption was 695.9 kB. Max. memory is 14.3 GB. * Witness Printer took 65.88 ms. Allocated memory is still 48.8 MB. Free memory was 14.7 MB in the beginning and 11.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 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: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L151] double x = -0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND FALSE !((ix0 & 0x7ff00000) == 0x7ff00000) VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L38] COND TRUE ix0 <= 0 VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L39] COND FALSE !(((ix0 & (~sign)) | ix1) == 0) VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L41] COND TRUE ix0 < 0 [L42] return (x - x) / (x - x); VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L155] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_0730b.c", 3, "reach_error") VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 103 SDslu, 24 SDs, 0 SdLazy, 25 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 3 QuantifiedInterpolants, 1306 SizeOfPredicates, 10 NumberOfNonLiveVariables, 136 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...