./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 788527977e7ebd7aa0a832758f41b65d3cbd270a ..................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 788527977e7ebd7aa0a832758f41b65d3cbd270a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.25-8bd4bc6 [2020-07-28 17:38:38,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:38:38,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:38:38,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:38:38,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:38:38,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:38:38,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:38:38,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:38:38,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:38:38,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:38:38,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:38:38,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:38:38,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:38:38,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:38:38,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:38:38,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:38:38,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:38:38,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:38:38,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:38:38,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:38:38,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:38:38,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:38:38,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:38:38,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:38:38,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:38:38,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:38:38,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:38:38,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:38:38,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:38:38,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:38:38,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:38:38,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:38:38,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:38:38,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:38:38,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:38:38,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:38:38,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:38:38,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:38:38,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:38:38,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:38:38,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:38:38,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:38:38,817 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:38:38,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:38:38,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:38:38,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:38:38,823 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:38:38,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:38:38,826 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:38:38,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:38:38,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:38:38,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:38:38,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:38:38,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:38:38,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:38:38,828 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:38:38,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:38:38,830 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:38:38,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:38:38,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:38:38,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:38:38,832 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:38:38,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:38:38,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:38:38,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:38:38,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:38:38,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:38:38,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:38:38,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:38:38,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:38:38,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:38:38,836 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 788527977e7ebd7aa0a832758f41b65d3cbd270a [2020-07-28 17:38:39,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:38:39,239 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:38:39,244 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:38:39,246 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:38:39,247 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:38:39,250 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-07-28 17:38:39,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/625cf2a8f/f521980383d2486c8e88b17f122bb384/FLAG3eb91da34 [2020-07-28 17:38:39,830 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:38:39,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-07-28 17:38:39,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/625cf2a8f/f521980383d2486c8e88b17f122bb384/FLAG3eb91da34 [2020-07-28 17:38:40,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/625cf2a8f/f521980383d2486c8e88b17f122bb384 [2020-07-28 17:38:40,176 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:38:40,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:38:40,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:38:40,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:38:40,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:38:40,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:38:40" (1/1) ... [2020-07-28 17:38:40,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60939bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:40, skipping insertion in model container [2020-07-28 17:38:40,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:38:40" (1/1) ... [2020-07-28 17:38:40,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:38:40,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:38:40,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:38:40,538 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:38:40,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:38:40,710 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:38:40,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:40 WrapperNode [2020-07-28 17:38:40,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:38:40,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:38:40,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:38:40,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:38:40,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:40" (1/1) ... [2020-07-28 17:38:40,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:40" (1/1) ... [2020-07-28 17:38:40,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:38:40,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:38:40,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:38:40,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:38:40,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:40" (1/1) ... [2020-07-28 17:38:40,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:40" (1/1) ... [2020-07-28 17:38:40,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:40" (1/1) ... [2020-07-28 17:38:40,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:40" (1/1) ... [2020-07-28 17:38:40,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:40" (1/1) ... [2020-07-28 17:38:40,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:40" (1/1) ... [2020-07-28 17:38:40,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:40" (1/1) ... [2020-07-28 17:38:40,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:38:40,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:38:40,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:38:40,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:38:40,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:38:40,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:38:40,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-28 17:38:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 17:38:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-28 17:38:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:38:40,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:38:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 17:38:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 17:38:41,599 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:38:41,600 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-07-28 17:38:41,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:38:41 BoogieIcfgContainer [2020-07-28 17:38:41,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:38:41,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:38:41,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:38:41,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:38:41,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:38:40" (1/3) ... [2020-07-28 17:38:41,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c2928e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:38:41, skipping insertion in model container [2020-07-28 17:38:41,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:40" (2/3) ... [2020-07-28 17:38:41,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c2928e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:38:41, skipping insertion in model container [2020-07-28 17:38:41,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:38:41" (3/3) ... [2020-07-28 17:38:41,616 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-07-28 17:38:41,629 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:38:41,639 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:38:41,655 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:38:41,683 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:38:41,683 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:38:41,683 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:38:41,684 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:38:41,684 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:38:41,685 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:38:41,685 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:38:41,685 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:38:41,702 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-07-28 17:38:41,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-28 17:38:41,708 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:38:41,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:38:41,710 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:38:41,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:38:41,715 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2020-07-28 17:38:41,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:38:41,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654234309] [2020-07-28 17:38:41,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:38:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:38:41,853 INFO L280 TraceCheckUtils]: 0: Hoare triple {56#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~one_sqrt~0 := 1.0;~tiny_sqrt~0 := 1.0E-300; {56#true} is VALID [2020-07-28 17:38:41,854 INFO L280 TraceCheckUtils]: 1: Hoare triple {56#true} havoc main_#res;havoc main_#t~ret9, main_#t~ret10, main_#t~short11, main_~x~0, main_~res~0;main_~x~0 := ~someUnaryDOUBLEoperation(0.0);__ieee754_sqrt_#in~x := main_~x~0;havoc __ieee754_sqrt_#res;havoc __ieee754_sqrt_#t~mem0, __ieee754_sqrt_#t~union1, __ieee754_sqrt_#t~mem2, __ieee754_sqrt_#t~union3, __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, __ieee754_sqrt_#t~post4, __ieee754_sqrt_#t~mem5, __ieee754_sqrt_#t~union6.lsw, __ieee754_sqrt_#t~union6.msw, __ieee754_sqrt_~#iw_u~0.base, __ieee754_sqrt_~#iw_u~0.offset, __ieee754_sqrt_~x, __ieee754_sqrt_~z~0, __ieee754_sqrt_~sign~0, __ieee754_sqrt_~r~0, __ieee754_sqrt_~t1~0, __ieee754_sqrt_~s1~0, __ieee754_sqrt_~ix1~0, __ieee754_sqrt_~q1~0, __ieee754_sqrt_~ix0~0, __ieee754_sqrt_~s0~0, __ieee754_sqrt_~q~0, __ieee754_sqrt_~m~0, __ieee754_sqrt_~t~0, __ieee754_sqrt_~i~0;__ieee754_sqrt_~x := __ieee754_sqrt_#in~x;havoc __ieee754_sqrt_~z~0;__ieee754_sqrt_~sign~0 := -2147483648;havoc __ieee754_sqrt_~r~0;havoc __ieee754_sqrt_~t1~0;havoc __ieee754_sqrt_~s1~0;havoc __ieee754_sqrt_~ix1~0;havoc __ieee754_sqrt_~q1~0;havoc __ieee754_sqrt_~ix0~0;havoc __ieee754_sqrt_~s0~0;havoc __ieee754_sqrt_~q~0;havoc __ieee754_sqrt_~m~0;havoc __ieee754_sqrt_~t~0;havoc __ieee754_sqrt_~i~0; {56#true} is VALID [2020-07-28 17:38:41,855 INFO L280 TraceCheckUtils]: 2: Hoare triple {56#true} assume !true; {57#false} is VALID [2020-07-28 17:38:41,855 INFO L280 TraceCheckUtils]: 3: Hoare triple {57#false} assume 2146435072 == ~bitwiseAnd(__ieee754_sqrt_~ix0~0, 2146435072);__ieee754_sqrt_#res := ~someBinaryArithmeticDOUBLEoperation(~someBinaryArithmeticDOUBLEoperation(__ieee754_sqrt_~x, __ieee754_sqrt_~x), __ieee754_sqrt_~x); {57#false} is VALID [2020-07-28 17:38:41,856 INFO L280 TraceCheckUtils]: 4: Hoare triple {57#false} main_#t~ret9 := __ieee754_sqrt_#res;main_~res~0 := main_#t~ret9;havoc main_#t~ret9;main_#t~short11 := ~someBinaryDOUBLEComparisonOperation(main_~res~0, ~someUnaryDOUBLEoperation(0.0)); {57#false} is VALID [2020-07-28 17:38:41,856 INFO L280 TraceCheckUtils]: 5: Hoare triple {57#false} assume !main_#t~short11; {57#false} is VALID [2020-07-28 17:38:41,857 INFO L280 TraceCheckUtils]: 6: Hoare triple {57#false} assume !main_#t~short11;havoc main_#t~ret10;havoc main_#t~short11; {57#false} is VALID [2020-07-28 17:38:41,857 INFO L280 TraceCheckUtils]: 7: Hoare triple {57#false} assume !false; {57#false} is VALID [2020-07-28 17:38:41,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:38:41,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654234309] [2020-07-28 17:38:41,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:38:41,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 17:38:41,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625675547] [2020-07-28 17:38:41,870 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-07-28 17:38:41,872 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:38:41,877 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:38:41,901 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:38:41,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:38:41,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:38:41,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:38:41,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:38:41,915 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2020-07-28 17:38:42,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:38:42,055 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2020-07-28 17:38:42,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:38:42,056 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-07-28 17:38:42,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:38:42,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:38:42,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 166 transitions. [2020-07-28 17:38:42,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:38:42,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 166 transitions. [2020-07-28 17:38:42,075 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 166 transitions. [2020-07-28 17:38:42,341 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 166 edges. 166 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:38:42,355 INFO L225 Difference]: With dead ends: 104 [2020-07-28 17:38:42,355 INFO L226 Difference]: Without dead ends: 50 [2020-07-28 17:38:42,359 INFO L675 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 [2020-07-28 17:38:42,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-28 17:38:42,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-07-28 17:38:42,403 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:38:42,404 INFO L82 GeneralOperation]: Start isEquivalent. First operand 50 states. Second operand 50 states. [2020-07-28 17:38:42,405 INFO L74 IsIncluded]: Start isIncluded. First operand 50 states. Second operand 50 states. [2020-07-28 17:38:42,405 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 50 states. [2020-07-28 17:38:42,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:38:42,411 INFO L93 Difference]: Finished difference Result 50 states and 70 transitions. [2020-07-28 17:38:42,411 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-07-28 17:38:42,412 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:38:42,412 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:38:42,412 INFO L74 IsIncluded]: Start isIncluded. First operand 50 states. Second operand 50 states. [2020-07-28 17:38:42,413 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 50 states. [2020-07-28 17:38:42,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:38:42,417 INFO L93 Difference]: Finished difference Result 50 states and 70 transitions. [2020-07-28 17:38:42,418 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-07-28 17:38:42,419 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:38:42,419 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:38:42,419 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:38:42,419 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:38:42,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-28 17:38:42,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2020-07-28 17:38:42,425 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2020-07-28 17:38:42,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:38:42,425 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2020-07-28 17:38:42,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:38:42,426 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-07-28 17:38:42,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-28 17:38:42,427 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:38:42,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:38:42,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:38:42,428 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:38:42,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:38:42,428 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2020-07-28 17:38:42,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:38:42,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824586483] [2020-07-28 17:38:42,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:38:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:38:42,486 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:38:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:38:42,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:38:42,540 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 17:38:42,540 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:38:42,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 17:38:42,578 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:38:42,578 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:38:42,578 WARN L170 areAnnotationChecker]: L25-2 has no Hoare annotation [2020-07-28 17:38:42,578 WARN L170 areAnnotationChecker]: L25-2 has no Hoare annotation [2020-07-28 17:38:42,578 WARN L170 areAnnotationChecker]: L25-1 has no Hoare annotation [2020-07-28 17:38:42,579 WARN L170 areAnnotationChecker]: L25-1 has no Hoare annotation [2020-07-28 17:38:42,579 WARN L170 areAnnotationChecker]: L25-3 has no Hoare annotation [2020-07-28 17:38:42,579 WARN L170 areAnnotationChecker]: L25-3 has no Hoare annotation [2020-07-28 17:38:42,579 WARN L170 areAnnotationChecker]: L126 has no Hoare annotation [2020-07-28 17:38:42,579 WARN L170 areAnnotationChecker]: L36 has no Hoare annotation [2020-07-28 17:38:42,579 WARN L170 areAnnotationChecker]: L36 has no Hoare annotation [2020-07-28 17:38:42,580 WARN L170 areAnnotationChecker]: L153 has no Hoare annotation [2020-07-28 17:38:42,580 WARN L170 areAnnotationChecker]: L153 has no Hoare annotation [2020-07-28 17:38:42,580 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2020-07-28 17:38:42,580 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2020-07-28 17:38:42,580 WARN L170 areAnnotationChecker]: L36-2 has no Hoare annotation [2020-07-28 17:38:42,580 WARN L170 areAnnotationChecker]: L132-2 has no Hoare annotation [2020-07-28 17:38:42,581 WARN L170 areAnnotationChecker]: L132-2 has no Hoare annotation [2020-07-28 17:38:42,581 WARN L170 areAnnotationChecker]: L153-2 has no Hoare annotation [2020-07-28 17:38:42,581 WARN L170 areAnnotationChecker]: L153-2 has no Hoare annotation [2020-07-28 17:38:42,581 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2020-07-28 17:38:42,581 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2020-07-28 17:38:42,581 WARN L170 areAnnotationChecker]: L44 has no Hoare annotation [2020-07-28 17:38:42,582 WARN L170 areAnnotationChecker]: L44 has no Hoare annotation [2020-07-28 17:38:42,582 WARN L170 areAnnotationChecker]: L132-1 has no Hoare annotation [2020-07-28 17:38:42,582 WARN L170 areAnnotationChecker]: L132-1 has no Hoare annotation [2020-07-28 17:38:42,582 WARN L170 areAnnotationChecker]: L132-3 has no Hoare annotation [2020-07-28 17:38:42,582 WARN L170 areAnnotationChecker]: L154 has no Hoare annotation [2020-07-28 17:38:42,583 WARN L170 areAnnotationChecker]: L154 has no Hoare annotation [2020-07-28 17:38:42,583 WARN L170 areAnnotationChecker]: L158 has no Hoare annotation [2020-07-28 17:38:42,583 WARN L170 areAnnotationChecker]: L45-2 has no Hoare annotation [2020-07-28 17:38:42,583 WARN L170 areAnnotationChecker]: L45-2 has no Hoare annotation [2020-07-28 17:38:42,583 WARN L170 areAnnotationChecker]: L45-2 has no Hoare annotation [2020-07-28 17:38:42,583 WARN L170 areAnnotationChecker]: L44-2 has no Hoare annotation [2020-07-28 17:38:42,584 WARN L170 areAnnotationChecker]: L138 has no Hoare annotation [2020-07-28 17:38:42,584 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:38:42,584 WARN L170 areAnnotationChecker]: L45-3 has no Hoare annotation [2020-07-28 17:38:42,584 WARN L170 areAnnotationChecker]: L58 has no Hoare annotation [2020-07-28 17:38:42,584 WARN L170 areAnnotationChecker]: L58 has no Hoare annotation [2020-07-28 17:38:42,585 WARN L170 areAnnotationChecker]: L50-3 has no Hoare annotation [2020-07-28 17:38:42,585 WARN L170 areAnnotationChecker]: L50-3 has no Hoare annotation [2020-07-28 17:38:42,585 WARN L170 areAnnotationChecker]: L50-3 has no Hoare annotation [2020-07-28 17:38:42,585 WARN L170 areAnnotationChecker]: L58-2 has no Hoare annotation [2020-07-28 17:38:42,585 WARN L170 areAnnotationChecker]: L50-4 has no Hoare annotation [2020-07-28 17:38:42,585 WARN L170 areAnnotationChecker]: L50-2 has no Hoare annotation [2020-07-28 17:38:42,586 WARN L170 areAnnotationChecker]: L69-2 has no Hoare annotation [2020-07-28 17:38:42,586 WARN L170 areAnnotationChecker]: L69-2 has no Hoare annotation [2020-07-28 17:38:42,586 WARN L170 areAnnotationChecker]: L69-2 has no Hoare annotation [2020-07-28 17:38:42,586 WARN L170 areAnnotationChecker]: L69-3 has no Hoare annotation [2020-07-28 17:38:42,586 WARN L170 areAnnotationChecker]: L71 has no Hoare annotation [2020-07-28 17:38:42,587 WARN L170 areAnnotationChecker]: L71 has no Hoare annotation [2020-07-28 17:38:42,587 WARN L170 areAnnotationChecker]: L82-2 has no Hoare annotation [2020-07-28 17:38:42,587 WARN L170 areAnnotationChecker]: L82-2 has no Hoare annotation [2020-07-28 17:38:42,587 WARN L170 areAnnotationChecker]: L82-2 has no Hoare annotation [2020-07-28 17:38:42,587 WARN L170 areAnnotationChecker]: L71-2 has no Hoare annotation [2020-07-28 17:38:42,587 WARN L170 areAnnotationChecker]: L82-3 has no Hoare annotation [2020-07-28 17:38:42,588 WARN L170 areAnnotationChecker]: L82-3 has no Hoare annotation [2020-07-28 17:38:42,588 WARN L170 areAnnotationChecker]: L85 has no Hoare annotation [2020-07-28 17:38:42,588 WARN L170 areAnnotationChecker]: L85 has no Hoare annotation [2020-07-28 17:38:42,588 WARN L170 areAnnotationChecker]: L102 has no Hoare annotation [2020-07-28 17:38:42,588 WARN L170 areAnnotationChecker]: L102 has no Hoare annotation [2020-07-28 17:38:42,588 WARN L170 areAnnotationChecker]: L100 has no Hoare annotation [2020-07-28 17:38:42,588 WARN L170 areAnnotationChecker]: L87 has no Hoare annotation [2020-07-28 17:38:42,589 WARN L170 areAnnotationChecker]: L87 has no Hoare annotation [2020-07-28 17:38:42,589 WARN L170 areAnnotationChecker]: L85-2 has no Hoare annotation [2020-07-28 17:38:42,589 WARN L170 areAnnotationChecker]: L104 has no Hoare annotation [2020-07-28 17:38:42,589 WARN L170 areAnnotationChecker]: L104 has no Hoare annotation [2020-07-28 17:38:42,589 WARN L170 areAnnotationChecker]: L117 has no Hoare annotation [2020-07-28 17:38:42,589 WARN L170 areAnnotationChecker]: L117 has no Hoare annotation [2020-07-28 17:38:42,590 WARN L170 areAnnotationChecker]: L87-2 has no Hoare annotation [2020-07-28 17:38:42,590 WARN L170 areAnnotationChecker]: L107 has no Hoare annotation [2020-07-28 17:38:42,590 WARN L170 areAnnotationChecker]: L107 has no Hoare annotation [2020-07-28 17:38:42,590 WARN L170 areAnnotationChecker]: L117-2 has no Hoare annotation [2020-07-28 17:38:42,590 WARN L170 areAnnotationChecker]: L90 has no Hoare annotation [2020-07-28 17:38:42,591 WARN L170 areAnnotationChecker]: L90 has no Hoare annotation [2020-07-28 17:38:42,591 WARN L170 areAnnotationChecker]: L108 has no Hoare annotation [2020-07-28 17:38:42,591 WARN L170 areAnnotationChecker]: L108 has no Hoare annotation [2020-07-28 17:38:42,591 WARN L170 areAnnotationChecker]: L120-2 has no Hoare annotation [2020-07-28 17:38:42,591 WARN L170 areAnnotationChecker]: L120-2 has no Hoare annotation [2020-07-28 17:38:42,591 WARN L170 areAnnotationChecker]: L90-2 has no Hoare annotation [2020-07-28 17:38:42,592 WARN L170 areAnnotationChecker]: L108-2 has no Hoare annotation [2020-07-28 17:38:42,592 WARN L170 areAnnotationChecker]: L120-1 has no Hoare annotation [2020-07-28 17:38:42,592 WARN L170 areAnnotationChecker]: L120-1 has no Hoare annotation [2020-07-28 17:38:42,592 WARN L170 areAnnotationChecker]: L120-3 has no Hoare annotation [2020-07-28 17:38:42,592 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:38:42,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:38:42 BoogieIcfgContainer [2020-07-28 17:38:42,596 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:38:42,597 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:38:42,597 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:38:42,597 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:38:42,598 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:38:41" (3/4) ... [2020-07-28 17:38:42,602 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-28 17:38:42,602 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:38:42,606 INFO L168 Benchmark]: Toolchain (without parser) took 2427.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 958.9 MB in the beginning and 956.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 109.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:38:42,606 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:38:42,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 531.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 958.9 MB in the beginning and 1.1 GB in the end (delta: -136.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2020-07-28 17:38:42,608 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2020-07-28 17:38:42,609 INFO L168 Benchmark]: Boogie Preprocessor took 47.75 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:38:42,610 INFO L168 Benchmark]: RCFGBuilder took 753.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 11.5 GB. [2020-07-28 17:38:42,611 INFO L168 Benchmark]: TraceAbstraction took 989.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 956.2 MB in the end (delta: 83.3 MB). Peak memory consumption was 83.3 MB. Max. memory is 11.5 GB. [2020-07-28 17:38:42,611 INFO L168 Benchmark]: Witness Printer took 5.79 ms. Allocated memory is still 1.1 GB. Free memory is still 956.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:38:42,616 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 531.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 958.9 MB in the beginning and 1.1 GB in the end (delta: -136.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 89.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.75 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 753.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 989.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 956.2 MB in the end (delta: 83.3 MB). Peak memory consumption was 83.3 MB. Max. memory is 11.5 GB. * Witness Printer took 5.79 ms. Allocated memory is still 1.1 GB. Free memory is still 956.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 154]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 149, overapproximation of someBinaryArithmeticDOUBLEoperation at line 33, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryDOUBLEComparisonOperation at line 153. Possible FailurePath: [L17] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L149] double x = -0.0; [L20] double z; [L21] __int32_t sign = 0x80000000; [L22] __uint32_t r, t1, s1, ix1, q1; [L23] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L26] ieee_double_shape_type ew_u; [L27] ew_u.value = (x) [L28] EXPR ew_u.parts.msw [L28] (ix0) = ew_u.parts.msw [L29] EXPR ew_u.parts.lsw [L29] (ix1) = ew_u.parts.lsw [L32] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L33] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L150] double res = __ieee754_sqrt(x); [L153] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L153] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L154] __VERIFIER_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, 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=53occurred 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 0.1.25-8bd4bc6 [2020-07-28 17:38:44,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:38:44,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:38:44,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:38:44,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:38:44,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:38:44,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:38:44,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:38:44,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:38:44,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:38:44,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:38:44,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:38:44,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:38:44,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:38:44,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:38:44,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:38:44,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:38:44,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:38:44,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:38:44,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:38:44,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:38:44,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:38:44,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:38:44,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:38:44,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:38:44,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:38:44,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:38:44,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:38:44,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:38:44,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:38:44,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:38:44,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:38:44,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:38:44,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:38:44,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:38:44,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:38:44,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:38:44,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:38:44,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:38:44,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:38:44,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:38:44,727 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 17:38:44,751 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:38:44,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:38:44,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:38:44,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:38:44,754 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:38:44,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:38:44,755 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:38:44,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:38:44,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:38:44,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:38:44,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:38:44,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:38:44,758 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 17:38:44,758 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 17:38:44,759 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:38:44,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:38:44,759 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:38:44,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:38:44,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:38:44,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:38:44,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:38:44,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:38:44,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:38:44,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:38:44,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:38:44,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:38:44,762 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 17:38:44,762 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 17:38:44,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:38:44,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:38:44,763 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 17:38:44,763 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 788527977e7ebd7aa0a832758f41b65d3cbd270a [2020-07-28 17:38:45,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:38:45,109 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:38:45,113 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:38:45,115 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:38:45,118 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:38:45,119 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-07-28 17:38:45,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24d9570f1/850bbec6db9f4c338e3f5c1f8e26f05c/FLAGabba6ae35 [2020-07-28 17:38:45,573 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:38:45,574 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-07-28 17:38:45,583 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24d9570f1/850bbec6db9f4c338e3f5c1f8e26f05c/FLAGabba6ae35 [2020-07-28 17:38:45,953 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24d9570f1/850bbec6db9f4c338e3f5c1f8e26f05c [2020-07-28 17:38:45,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:38:45,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:38:45,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:38:45,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:38:45,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:38:45,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:38:45" (1/1) ... [2020-07-28 17:38:45,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd7a746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:45, skipping insertion in model container [2020-07-28 17:38:45,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:38:45" (1/1) ... [2020-07-28 17:38:45,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:38:46,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:38:46,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:38:46,263 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:38:46,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:38:46,496 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:38:46,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:46 WrapperNode [2020-07-28 17:38:46,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:38:46,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:38:46,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:38:46,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:38:46,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:46" (1/1) ... [2020-07-28 17:38:46,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:46" (1/1) ... [2020-07-28 17:38:46,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:38:46,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:38:46,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:38:46,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:38:46,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:46" (1/1) ... [2020-07-28 17:38:46,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:46" (1/1) ... [2020-07-28 17:38:46,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:46" (1/1) ... [2020-07-28 17:38:46,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:46" (1/1) ... [2020-07-28 17:38:46,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:46" (1/1) ... [2020-07-28 17:38:46,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:46" (1/1) ... [2020-07-28 17:38:46,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:46" (1/1) ... [2020-07-28 17:38:46,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:38:46,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:38:46,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:38:46,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:38:46,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:46" (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 [2020-07-28 17:38:46,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-07-28 17:38:46,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-07-28 17:38:46,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:38:46,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-07-28 17:38:46,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:38:46,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:38:46,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-07-28 17:38:46,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 17:38:51,036 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:38:51,037 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-07-28 17:38:51,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:38:51 BoogieIcfgContainer [2020-07-28 17:38:51,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:38:51,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:38:51,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:38:51,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:38:51,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:38:45" (1/3) ... [2020-07-28 17:38:51,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd7ac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:38:51, skipping insertion in model container [2020-07-28 17:38:51,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:38:46" (2/3) ... [2020-07-28 17:38:51,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd7ac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:38:51, skipping insertion in model container [2020-07-28 17:38:51,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:38:51" (3/3) ... [2020-07-28 17:38:51,052 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-07-28 17:38:51,064 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:38:51,072 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:38:51,086 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:38:51,112 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:38:51,113 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:38:51,113 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:38:51,113 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:38:51,114 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:38:51,114 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:38:51,114 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:38:51,115 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:38:51,132 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-07-28 17:38:51,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-28 17:38:51,139 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:38:51,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:38:51,140 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:38:51,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:38:51,146 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2020-07-28 17:38:51,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:38:51,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263124805] [2020-07-28 17:38:51,161 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 [2020-07-28 17:38:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:38:51,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-28 17:38:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:38:51,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:38:51,599 INFO L280 TraceCheckUtils]: 0: Hoare triple {56#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;~one_sqrt~0 := ~to_fp~DOUBLE(currentRoundingMode, 1.0);~tiny_sqrt~0 := ~to_fp~DOUBLE(currentRoundingMode, 1.0E-300); {56#true} is VALID [2020-07-28 17:38:51,600 INFO L280 TraceCheckUtils]: 1: Hoare triple {56#true} havoc main_#res;havoc main_#t~ret9, main_#t~ret10, main_#t~short11, main_~x~0, main_~res~0;main_~x~0 := ~fp.neg~DOUBLE(~Pluszero~DOUBLE());__ieee754_sqrt_#in~x := main_~x~0;havoc __ieee754_sqrt_#res;havoc __ieee754_sqrt_#t~mem0, __ieee754_sqrt_#t~union1, __ieee754_sqrt_#t~mem2, __ieee754_sqrt_#t~union3, __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, __ieee754_sqrt_#t~post4, __ieee754_sqrt_#t~mem5, __ieee754_sqrt_#t~union6.lsw, __ieee754_sqrt_#t~union6.msw, __ieee754_sqrt_~#iw_u~0.base, __ieee754_sqrt_~#iw_u~0.offset, __ieee754_sqrt_~x, __ieee754_sqrt_~z~0, __ieee754_sqrt_~sign~0, __ieee754_sqrt_~r~0, __ieee754_sqrt_~t1~0, __ieee754_sqrt_~s1~0, __ieee754_sqrt_~ix1~0, __ieee754_sqrt_~q1~0, __ieee754_sqrt_~ix0~0, __ieee754_sqrt_~s0~0, __ieee754_sqrt_~q~0, __ieee754_sqrt_~m~0, __ieee754_sqrt_~t~0, __ieee754_sqrt_~i~0;__ieee754_sqrt_~x := __ieee754_sqrt_#in~x;havoc __ieee754_sqrt_~z~0;__ieee754_sqrt_~sign~0 := 2147483648bv32;havoc __ieee754_sqrt_~r~0;havoc __ieee754_sqrt_~t1~0;havoc __ieee754_sqrt_~s1~0;havoc __ieee754_sqrt_~ix1~0;havoc __ieee754_sqrt_~q1~0;havoc __ieee754_sqrt_~ix0~0;havoc __ieee754_sqrt_~s0~0;havoc __ieee754_sqrt_~q~0;havoc __ieee754_sqrt_~m~0;havoc __ieee754_sqrt_~t~0;havoc __ieee754_sqrt_~i~0; {56#true} is VALID [2020-07-28 17:38:51,606 INFO L280 TraceCheckUtils]: 2: Hoare triple {56#true} assume !true; {57#false} is VALID [2020-07-28 17:38:51,606 INFO L280 TraceCheckUtils]: 3: Hoare triple {57#false} assume 2146435072bv32 == ~bvand32(2146435072bv32, __ieee754_sqrt_~ix0~0);__ieee754_sqrt_#res := ~fp.add~DOUBLE(currentRoundingMode, ~fp.mul~DOUBLE(currentRoundingMode, __ieee754_sqrt_~x, __ieee754_sqrt_~x), __ieee754_sqrt_~x); {57#false} is VALID [2020-07-28 17:38:51,607 INFO L280 TraceCheckUtils]: 4: Hoare triple {57#false} main_#t~ret9 := __ieee754_sqrt_#res;main_~res~0 := main_#t~ret9;havoc main_#t~ret9;main_#t~short11 := ~fp.eq~DOUBLE(main_~res~0, ~fp.neg~DOUBLE(~Pluszero~DOUBLE())); {57#false} is VALID [2020-07-28 17:38:51,607 INFO L280 TraceCheckUtils]: 5: Hoare triple {57#false} assume !main_#t~short11; {57#false} is VALID [2020-07-28 17:38:51,607 INFO L280 TraceCheckUtils]: 6: Hoare triple {57#false} assume !main_#t~short11;havoc main_#t~short11;havoc main_#t~ret10; {57#false} is VALID [2020-07-28 17:38:51,608 INFO L280 TraceCheckUtils]: 7: Hoare triple {57#false} assume !false; {57#false} is VALID [2020-07-28 17:38:51,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:38:51,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:38:51,638 INFO L280 TraceCheckUtils]: 7: Hoare triple {57#false} assume !false; {57#false} is VALID [2020-07-28 17:38:51,638 INFO L280 TraceCheckUtils]: 6: Hoare triple {57#false} assume !main_#t~short11;havoc main_#t~short11;havoc main_#t~ret10; {57#false} is VALID [2020-07-28 17:38:51,639 INFO L280 TraceCheckUtils]: 5: Hoare triple {57#false} assume !main_#t~short11; {57#false} is VALID [2020-07-28 17:38:51,639 INFO L280 TraceCheckUtils]: 4: Hoare triple {57#false} main_#t~ret9 := __ieee754_sqrt_#res;main_~res~0 := main_#t~ret9;havoc main_#t~ret9;main_#t~short11 := ~fp.eq~DOUBLE(main_~res~0, ~fp.neg~DOUBLE(~Pluszero~DOUBLE())); {57#false} is VALID [2020-07-28 17:38:51,640 INFO L280 TraceCheckUtils]: 3: Hoare triple {57#false} assume 2146435072bv32 == ~bvand32(2146435072bv32, __ieee754_sqrt_~ix0~0);__ieee754_sqrt_#res := ~fp.add~DOUBLE(currentRoundingMode, ~fp.mul~DOUBLE(currentRoundingMode, __ieee754_sqrt_~x, __ieee754_sqrt_~x), __ieee754_sqrt_~x); {57#false} is VALID [2020-07-28 17:38:51,641 INFO L280 TraceCheckUtils]: 2: Hoare triple {56#true} assume !true; {57#false} is VALID [2020-07-28 17:38:51,642 INFO L280 TraceCheckUtils]: 1: Hoare triple {56#true} havoc main_#res;havoc main_#t~ret9, main_#t~ret10, main_#t~short11, main_~x~0, main_~res~0;main_~x~0 := ~fp.neg~DOUBLE(~Pluszero~DOUBLE());__ieee754_sqrt_#in~x := main_~x~0;havoc __ieee754_sqrt_#res;havoc __ieee754_sqrt_#t~mem0, __ieee754_sqrt_#t~union1, __ieee754_sqrt_#t~mem2, __ieee754_sqrt_#t~union3, __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, __ieee754_sqrt_#t~post4, __ieee754_sqrt_#t~mem5, __ieee754_sqrt_#t~union6.lsw, __ieee754_sqrt_#t~union6.msw, __ieee754_sqrt_~#iw_u~0.base, __ieee754_sqrt_~#iw_u~0.offset, __ieee754_sqrt_~x, __ieee754_sqrt_~z~0, __ieee754_sqrt_~sign~0, __ieee754_sqrt_~r~0, __ieee754_sqrt_~t1~0, __ieee754_sqrt_~s1~0, __ieee754_sqrt_~ix1~0, __ieee754_sqrt_~q1~0, __ieee754_sqrt_~ix0~0, __ieee754_sqrt_~s0~0, __ieee754_sqrt_~q~0, __ieee754_sqrt_~m~0, __ieee754_sqrt_~t~0, __ieee754_sqrt_~i~0;__ieee754_sqrt_~x := __ieee754_sqrt_#in~x;havoc __ieee754_sqrt_~z~0;__ieee754_sqrt_~sign~0 := 2147483648bv32;havoc __ieee754_sqrt_~r~0;havoc __ieee754_sqrt_~t1~0;havoc __ieee754_sqrt_~s1~0;havoc __ieee754_sqrt_~ix1~0;havoc __ieee754_sqrt_~q1~0;havoc __ieee754_sqrt_~ix0~0;havoc __ieee754_sqrt_~s0~0;havoc __ieee754_sqrt_~q~0;havoc __ieee754_sqrt_~m~0;havoc __ieee754_sqrt_~t~0;havoc __ieee754_sqrt_~i~0; {56#true} is VALID [2020-07-28 17:38:51,642 INFO L280 TraceCheckUtils]: 0: Hoare triple {56#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;~one_sqrt~0 := ~to_fp~DOUBLE(currentRoundingMode, 1.0);~tiny_sqrt~0 := ~to_fp~DOUBLE(currentRoundingMode, 1.0E-300); {56#true} is VALID [2020-07-28 17:38:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:38:51,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263124805] [2020-07-28 17:38:51,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:38:51,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-07-28 17:38:51,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045319324] [2020-07-28 17:38:51,651 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-07-28 17:38:51,653 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:38:51,657 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:38:51,824 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:38:51,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:38:51,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:38:51,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:38:51,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:38:51,835 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2020-07-28 17:38:55,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:38:55,356 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2020-07-28 17:38:55,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:38:55,357 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-07-28 17:38:55,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:38:55,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:38:55,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 166 transitions. [2020-07-28 17:38:55,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:38:55,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 166 transitions. [2020-07-28 17:38:55,375 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 166 transitions. [2020-07-28 17:38:58,196 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 166 edges. 166 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:38:58,226 INFO L225 Difference]: With dead ends: 104 [2020-07-28 17:38:58,226 INFO L226 Difference]: Without dead ends: 50 [2020-07-28 17:38:58,230 INFO L675 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 [2020-07-28 17:38:58,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-28 17:38:58,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-07-28 17:38:58,271 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:38:58,272 INFO L82 GeneralOperation]: Start isEquivalent. First operand 50 states. Second operand 50 states. [2020-07-28 17:38:58,273 INFO L74 IsIncluded]: Start isIncluded. First operand 50 states. Second operand 50 states. [2020-07-28 17:38:58,273 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 50 states. [2020-07-28 17:38:58,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:38:58,279 INFO L93 Difference]: Finished difference Result 50 states and 70 transitions. [2020-07-28 17:38:58,280 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-07-28 17:38:58,281 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:38:58,281 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:38:58,281 INFO L74 IsIncluded]: Start isIncluded. First operand 50 states. Second operand 50 states. [2020-07-28 17:38:58,281 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 50 states. [2020-07-28 17:38:58,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:38:58,286 INFO L93 Difference]: Finished difference Result 50 states and 70 transitions. [2020-07-28 17:38:58,286 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-07-28 17:38:58,287 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:38:58,288 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:38:58,288 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:38:58,288 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:38:58,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-28 17:38:58,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2020-07-28 17:38:58,294 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2020-07-28 17:38:58,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:38:58,295 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2020-07-28 17:38:58,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:38:58,295 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-07-28 17:38:58,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-28 17:38:58,296 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:38:58,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:38:58,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 17:38:58,500 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:38:58,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:38:58,501 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2020-07-28 17:38:58,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:38:58,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609326523] [2020-07-28 17:38:58,503 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 [2020-07-28 17:38:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:38:58,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-28 17:38:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:38:58,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:38:59,007 INFO L280 TraceCheckUtils]: 0: Hoare triple {385#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;~one_sqrt~0 := ~to_fp~DOUBLE(currentRoundingMode, 1.0);~tiny_sqrt~0 := ~to_fp~DOUBLE(currentRoundingMode, 1.0E-300); {385#true} is VALID [2020-07-28 17:38:59,009 INFO L280 TraceCheckUtils]: 1: Hoare triple {385#true} havoc main_#res;havoc main_#t~ret9, main_#t~ret10, main_#t~short11, main_~x~0, main_~res~0;main_~x~0 := ~fp.neg~DOUBLE(~Pluszero~DOUBLE());__ieee754_sqrt_#in~x := main_~x~0;havoc __ieee754_sqrt_#res;havoc __ieee754_sqrt_#t~mem0, __ieee754_sqrt_#t~union1, __ieee754_sqrt_#t~mem2, __ieee754_sqrt_#t~union3, __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, __ieee754_sqrt_#t~post4, __ieee754_sqrt_#t~mem5, __ieee754_sqrt_#t~union6.lsw, __ieee754_sqrt_#t~union6.msw, __ieee754_sqrt_~#iw_u~0.base, __ieee754_sqrt_~#iw_u~0.offset, __ieee754_sqrt_~x, __ieee754_sqrt_~z~0, __ieee754_sqrt_~sign~0, __ieee754_sqrt_~r~0, __ieee754_sqrt_~t1~0, __ieee754_sqrt_~s1~0, __ieee754_sqrt_~ix1~0, __ieee754_sqrt_~q1~0, __ieee754_sqrt_~ix0~0, __ieee754_sqrt_~s0~0, __ieee754_sqrt_~q~0, __ieee754_sqrt_~m~0, __ieee754_sqrt_~t~0, __ieee754_sqrt_~i~0;__ieee754_sqrt_~x := __ieee754_sqrt_#in~x;havoc __ieee754_sqrt_~z~0;__ieee754_sqrt_~sign~0 := 2147483648bv32;havoc __ieee754_sqrt_~r~0;havoc __ieee754_sqrt_~t1~0;havoc __ieee754_sqrt_~s1~0;havoc __ieee754_sqrt_~ix1~0;havoc __ieee754_sqrt_~q1~0;havoc __ieee754_sqrt_~ix0~0;havoc __ieee754_sqrt_~s0~0;havoc __ieee754_sqrt_~q~0;havoc __ieee754_sqrt_~m~0;havoc __ieee754_sqrt_~t~0;havoc __ieee754_sqrt_~i~0; {393#(= ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} is VALID [2020-07-28 17:38:59,015 INFO L280 TraceCheckUtils]: 2: Hoare triple {393#(= ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} call __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset := #Ultimate.allocOnStack(8bv32);call write~intFLOATTYPE8(__ieee754_sqrt_~x, __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, 8bv32);call __ieee754_sqrt_#t~mem0 := read~intINTTYPE4(__ieee754_sqrt_~#ew_u~0.base, ~bvadd32(4bv32, __ieee754_sqrt_~#ew_u~0.offset), 4bv32);__ieee754_sqrt_~ix0~0 := __ieee754_sqrt_#t~mem0;call write~intFLOATTYPE8(__ieee754_sqrt_#t~union1, __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, 8bv32);havoc __ieee754_sqrt_#t~mem0;havoc __ieee754_sqrt_#t~union1;call __ieee754_sqrt_#t~mem2 := read~intINTTYPE4(__ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, 4bv32);__ieee754_sqrt_~ix1~0 := __ieee754_sqrt_#t~mem2;call write~intFLOATTYPE8(__ieee754_sqrt_#t~union3, __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, 8bv32);havoc __ieee754_sqrt_#t~mem2;havoc __ieee754_sqrt_#t~union3;call ULTIMATE.dealloc(__ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset);havoc __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset; {397#(exists ((v_skolemized_v_prenex_2_3 (_ BitVec 64))) (and (= ULTIMATE.start___ieee754_sqrt_~ix0~0 ((_ extract 63 32) v_skolemized_v_prenex_2_3)) (= (fp ((_ extract 63 63) v_skolemized_v_prenex_2_3) ((_ extract 62 52) v_skolemized_v_prenex_2_3) ((_ extract 51 0) v_skolemized_v_prenex_2_3)) (fp.neg (_ +zero 11 53)))))} is VALID [2020-07-28 17:38:59,018 INFO L280 TraceCheckUtils]: 3: Hoare triple {397#(exists ((v_skolemized_v_prenex_2_3 (_ BitVec 64))) (and (= ULTIMATE.start___ieee754_sqrt_~ix0~0 ((_ extract 63 32) v_skolemized_v_prenex_2_3)) (= (fp ((_ extract 63 63) v_skolemized_v_prenex_2_3) ((_ extract 62 52) v_skolemized_v_prenex_2_3) ((_ extract 51 0) v_skolemized_v_prenex_2_3)) (fp.neg (_ +zero 11 53)))))} goto; {397#(exists ((v_skolemized_v_prenex_2_3 (_ BitVec 64))) (and (= ULTIMATE.start___ieee754_sqrt_~ix0~0 ((_ extract 63 32) v_skolemized_v_prenex_2_3)) (= (fp ((_ extract 63 63) v_skolemized_v_prenex_2_3) ((_ extract 62 52) v_skolemized_v_prenex_2_3) ((_ extract 51 0) v_skolemized_v_prenex_2_3)) (fp.neg (_ +zero 11 53)))))} is VALID [2020-07-28 17:38:59,211 INFO L280 TraceCheckUtils]: 4: Hoare triple {397#(exists ((v_skolemized_v_prenex_2_3 (_ BitVec 64))) (and (= ULTIMATE.start___ieee754_sqrt_~ix0~0 ((_ extract 63 32) v_skolemized_v_prenex_2_3)) (= (fp ((_ extract 63 63) v_skolemized_v_prenex_2_3) ((_ extract 62 52) v_skolemized_v_prenex_2_3) ((_ extract 51 0) v_skolemized_v_prenex_2_3)) (fp.neg (_ +zero 11 53)))))} assume 2146435072bv32 == ~bvand32(2146435072bv32, __ieee754_sqrt_~ix0~0);__ieee754_sqrt_#res := ~fp.add~DOUBLE(currentRoundingMode, ~fp.mul~DOUBLE(currentRoundingMode, __ieee754_sqrt_~x, __ieee754_sqrt_~x), __ieee754_sqrt_~x); {386#false} is VALID [2020-07-28 17:38:59,212 INFO L280 TraceCheckUtils]: 5: Hoare triple {386#false} main_#t~ret9 := __ieee754_sqrt_#res;main_~res~0 := main_#t~ret9;havoc main_#t~ret9;main_#t~short11 := ~fp.eq~DOUBLE(main_~res~0, ~fp.neg~DOUBLE(~Pluszero~DOUBLE())); {386#false} is VALID [2020-07-28 17:38:59,212 INFO L280 TraceCheckUtils]: 6: Hoare triple {386#false} assume !main_#t~short11; {386#false} is VALID [2020-07-28 17:38:59,212 INFO L280 TraceCheckUtils]: 7: Hoare triple {386#false} assume !main_#t~short11;havoc main_#t~short11;havoc main_#t~ret10; {386#false} is VALID [2020-07-28 17:38:59,212 INFO L280 TraceCheckUtils]: 8: Hoare triple {386#false} assume !false; {386#false} is VALID [2020-07-28 17:38:59,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:38:59,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:38:59,316 INFO L280 TraceCheckUtils]: 8: Hoare triple {386#false} assume !false; {386#false} is VALID [2020-07-28 17:38:59,316 INFO L280 TraceCheckUtils]: 7: Hoare triple {386#false} assume !main_#t~short11;havoc main_#t~short11;havoc main_#t~ret10; {386#false} is VALID [2020-07-28 17:38:59,317 INFO L280 TraceCheckUtils]: 6: Hoare triple {386#false} assume !main_#t~short11; {386#false} is VALID [2020-07-28 17:38:59,317 INFO L280 TraceCheckUtils]: 5: Hoare triple {386#false} main_#t~ret9 := __ieee754_sqrt_#res;main_~res~0 := main_#t~ret9;havoc main_#t~ret9;main_#t~short11 := ~fp.eq~DOUBLE(main_~res~0, ~fp.neg~DOUBLE(~Pluszero~DOUBLE())); {386#false} is VALID [2020-07-28 17:38:59,318 INFO L280 TraceCheckUtils]: 4: Hoare triple {428#(not (= (bvadd (bvand (_ bv2146435072 32) ULTIMATE.start___ieee754_sqrt_~ix0~0) (_ bv2148532224 32)) (_ bv0 32)))} assume 2146435072bv32 == ~bvand32(2146435072bv32, __ieee754_sqrt_~ix0~0);__ieee754_sqrt_#res := ~fp.add~DOUBLE(currentRoundingMode, ~fp.mul~DOUBLE(currentRoundingMode, __ieee754_sqrt_~x, __ieee754_sqrt_~x), __ieee754_sqrt_~x); {386#false} is VALID [2020-07-28 17:38:59,319 INFO L280 TraceCheckUtils]: 3: Hoare triple {428#(not (= (bvadd (bvand (_ bv2146435072 32) ULTIMATE.start___ieee754_sqrt_~ix0~0) (_ bv2148532224 32)) (_ bv0 32)))} goto; {428#(not (= (bvadd (bvand (_ bv2146435072 32) ULTIMATE.start___ieee754_sqrt_~ix0~0) (_ bv2148532224 32)) (_ bv0 32)))} is VALID [2020-07-28 17:38:59,325 INFO L280 TraceCheckUtils]: 2: Hoare triple {435#(forall ((v_skolemized_v_prenex_2_3 (_ BitVec 64))) (or (not (= (fp ((_ extract 63 63) v_skolemized_v_prenex_2_3) ((_ extract 62 52) v_skolemized_v_prenex_2_3) ((_ extract 51 0) v_skolemized_v_prenex_2_3)) ULTIMATE.start___ieee754_sqrt_~x)) (not (= (_ bv2146435072 32) (bvand (_ bv2146435072 32) ((_ extract 63 32) v_skolemized_v_prenex_2_3))))))} call __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset := #Ultimate.allocOnStack(8bv32);call write~intFLOATTYPE8(__ieee754_sqrt_~x, __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, 8bv32);call __ieee754_sqrt_#t~mem0 := read~intINTTYPE4(__ieee754_sqrt_~#ew_u~0.base, ~bvadd32(4bv32, __ieee754_sqrt_~#ew_u~0.offset), 4bv32);__ieee754_sqrt_~ix0~0 := __ieee754_sqrt_#t~mem0;call write~intFLOATTYPE8(__ieee754_sqrt_#t~union1, __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, 8bv32);havoc __ieee754_sqrt_#t~mem0;havoc __ieee754_sqrt_#t~union1;call __ieee754_sqrt_#t~mem2 := read~intINTTYPE4(__ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, 4bv32);__ieee754_sqrt_~ix1~0 := __ieee754_sqrt_#t~mem2;call write~intFLOATTYPE8(__ieee754_sqrt_#t~union3, __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, 8bv32);havoc __ieee754_sqrt_#t~mem2;havoc __ieee754_sqrt_#t~union3;call ULTIMATE.dealloc(__ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset);havoc __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset; {428#(not (= (bvadd (bvand (_ bv2146435072 32) ULTIMATE.start___ieee754_sqrt_~ix0~0) (_ bv2148532224 32)) (_ bv0 32)))} is VALID [2020-07-28 17:38:59,328 INFO L280 TraceCheckUtils]: 1: Hoare triple {385#true} havoc main_#res;havoc main_#t~ret9, main_#t~ret10, main_#t~short11, main_~x~0, main_~res~0;main_~x~0 := ~fp.neg~DOUBLE(~Pluszero~DOUBLE());__ieee754_sqrt_#in~x := main_~x~0;havoc __ieee754_sqrt_#res;havoc __ieee754_sqrt_#t~mem0, __ieee754_sqrt_#t~union1, __ieee754_sqrt_#t~mem2, __ieee754_sqrt_#t~union3, __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, __ieee754_sqrt_#t~post4, __ieee754_sqrt_#t~mem5, __ieee754_sqrt_#t~union6.lsw, __ieee754_sqrt_#t~union6.msw, __ieee754_sqrt_~#iw_u~0.base, __ieee754_sqrt_~#iw_u~0.offset, __ieee754_sqrt_~x, __ieee754_sqrt_~z~0, __ieee754_sqrt_~sign~0, __ieee754_sqrt_~r~0, __ieee754_sqrt_~t1~0, __ieee754_sqrt_~s1~0, __ieee754_sqrt_~ix1~0, __ieee754_sqrt_~q1~0, __ieee754_sqrt_~ix0~0, __ieee754_sqrt_~s0~0, __ieee754_sqrt_~q~0, __ieee754_sqrt_~m~0, __ieee754_sqrt_~t~0, __ieee754_sqrt_~i~0;__ieee754_sqrt_~x := __ieee754_sqrt_#in~x;havoc __ieee754_sqrt_~z~0;__ieee754_sqrt_~sign~0 := 2147483648bv32;havoc __ieee754_sqrt_~r~0;havoc __ieee754_sqrt_~t1~0;havoc __ieee754_sqrt_~s1~0;havoc __ieee754_sqrt_~ix1~0;havoc __ieee754_sqrt_~q1~0;havoc __ieee754_sqrt_~ix0~0;havoc __ieee754_sqrt_~s0~0;havoc __ieee754_sqrt_~q~0;havoc __ieee754_sqrt_~m~0;havoc __ieee754_sqrt_~t~0;havoc __ieee754_sqrt_~i~0; {435#(forall ((v_skolemized_v_prenex_2_3 (_ BitVec 64))) (or (not (= (fp ((_ extract 63 63) v_skolemized_v_prenex_2_3) ((_ extract 62 52) v_skolemized_v_prenex_2_3) ((_ extract 51 0) v_skolemized_v_prenex_2_3)) ULTIMATE.start___ieee754_sqrt_~x)) (not (= (_ bv2146435072 32) (bvand (_ bv2146435072 32) ((_ extract 63 32) v_skolemized_v_prenex_2_3))))))} is VALID [2020-07-28 17:38:59,329 INFO L280 TraceCheckUtils]: 0: Hoare triple {385#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;~one_sqrt~0 := ~to_fp~DOUBLE(currentRoundingMode, 1.0);~tiny_sqrt~0 := ~to_fp~DOUBLE(currentRoundingMode, 1.0E-300); {385#true} is VALID [2020-07-28 17:38:59,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:38:59,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609326523] [2020-07-28 17:38:59,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:38:59,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-07-28 17:38:59,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440630928] [2020-07-28 17:38:59,333 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-07-28 17:38:59,334 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:38:59,334 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-28 17:38:59,652 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:38:59,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-28 17:38:59,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:38:59,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-28 17:38:59,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-28 17:38:59,654 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand 6 states. [2020-07-28 17:39:02,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:39:02,672 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2020-07-28 17:39:02,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 17:39:02,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-07-28 17:39:02,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:39:02,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-28 17:39:02,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2020-07-28 17:39:02,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-28 17:39:02,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2020-07-28 17:39:02,678 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 79 transitions. [2020-07-28 17:39:04,102 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 79 edges. 79 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:39:04,104 INFO L225 Difference]: With dead ends: 59 [2020-07-28 17:39:04,104 INFO L226 Difference]: Without dead ends: 17 [2020-07-28 17:39:04,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-28 17:39:04,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-07-28 17:39:04,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-07-28 17:39:04,116 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:39:04,117 INFO L82 GeneralOperation]: Start isEquivalent. First operand 17 states. Second operand 17 states. [2020-07-28 17:39:04,117 INFO L74 IsIncluded]: Start isIncluded. First operand 17 states. Second operand 17 states. [2020-07-28 17:39:04,117 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 17 states. [2020-07-28 17:39:04,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:39:04,118 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-07-28 17:39:04,119 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-07-28 17:39:04,119 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:39:04,120 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:39:04,120 INFO L74 IsIncluded]: Start isIncluded. First operand 17 states. Second operand 17 states. [2020-07-28 17:39:04,120 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 17 states. [2020-07-28 17:39:04,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:39:04,124 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-07-28 17:39:04,125 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-07-28 17:39:04,126 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:39:04,126 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:39:04,126 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:39:04,127 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:39:04,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-28 17:39:04,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-07-28 17:39:04,128 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2020-07-28 17:39:04,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:39:04,129 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-07-28 17:39:04,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-28 17:39:04,129 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-07-28 17:39:04,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-28 17:39:04,130 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:39:04,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:39:04,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-07-28 17:39:04,344 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:39:04,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:39:04,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2020-07-28 17:39:04,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:39:04,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408007114] [2020-07-28 17:39:04,348 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 [2020-07-28 17:39:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:39:04,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-28 17:39:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:39:04,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:39:04,481 INFO L280 TraceCheckUtils]: 0: Hoare triple {569#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;~one_sqrt~0 := ~to_fp~DOUBLE(currentRoundingMode, 1.0);~tiny_sqrt~0 := ~to_fp~DOUBLE(currentRoundingMode, 1.0E-300); {569#true} is VALID [2020-07-28 17:39:04,482 INFO L280 TraceCheckUtils]: 1: Hoare triple {569#true} havoc main_#res;havoc main_#t~ret9, main_#t~ret10, main_#t~short11, main_~x~0, main_~res~0;main_~x~0 := ~fp.neg~DOUBLE(~Pluszero~DOUBLE());__ieee754_sqrt_#in~x := main_~x~0;havoc __ieee754_sqrt_#res;havoc __ieee754_sqrt_#t~mem0, __ieee754_sqrt_#t~union1, __ieee754_sqrt_#t~mem2, __ieee754_sqrt_#t~union3, __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, __ieee754_sqrt_#t~post4, __ieee754_sqrt_#t~mem5, __ieee754_sqrt_#t~union6.lsw, __ieee754_sqrt_#t~union6.msw, __ieee754_sqrt_~#iw_u~0.base, __ieee754_sqrt_~#iw_u~0.offset, __ieee754_sqrt_~x, __ieee754_sqrt_~z~0, __ieee754_sqrt_~sign~0, __ieee754_sqrt_~r~0, __ieee754_sqrt_~t1~0, __ieee754_sqrt_~s1~0, __ieee754_sqrt_~ix1~0, __ieee754_sqrt_~q1~0, __ieee754_sqrt_~ix0~0, __ieee754_sqrt_~s0~0, __ieee754_sqrt_~q~0, __ieee754_sqrt_~m~0, __ieee754_sqrt_~t~0, __ieee754_sqrt_~i~0;__ieee754_sqrt_~x := __ieee754_sqrt_#in~x;havoc __ieee754_sqrt_~z~0;__ieee754_sqrt_~sign~0 := 2147483648bv32;havoc __ieee754_sqrt_~r~0;havoc __ieee754_sqrt_~t1~0;havoc __ieee754_sqrt_~s1~0;havoc __ieee754_sqrt_~ix1~0;havoc __ieee754_sqrt_~q1~0;havoc __ieee754_sqrt_~ix0~0;havoc __ieee754_sqrt_~s0~0;havoc __ieee754_sqrt_~q~0;havoc __ieee754_sqrt_~m~0;havoc __ieee754_sqrt_~t~0;havoc __ieee754_sqrt_~i~0; {577#(= ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} is VALID [2020-07-28 17:39:04,483 INFO L280 TraceCheckUtils]: 2: Hoare triple {577#(= ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} call __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset := #Ultimate.allocOnStack(8bv32);call write~intFLOATTYPE8(__ieee754_sqrt_~x, __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, 8bv32);call __ieee754_sqrt_#t~mem0 := read~intINTTYPE4(__ieee754_sqrt_~#ew_u~0.base, ~bvadd32(4bv32, __ieee754_sqrt_~#ew_u~0.offset), 4bv32);__ieee754_sqrt_~ix0~0 := __ieee754_sqrt_#t~mem0;call write~intFLOATTYPE8(__ieee754_sqrt_#t~union1, __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, 8bv32);havoc __ieee754_sqrt_#t~mem0;havoc __ieee754_sqrt_#t~union1;call __ieee754_sqrt_#t~mem2 := read~intINTTYPE4(__ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, 4bv32);__ieee754_sqrt_~ix1~0 := __ieee754_sqrt_#t~mem2;call write~intFLOATTYPE8(__ieee754_sqrt_#t~union3, __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, 8bv32);havoc __ieee754_sqrt_#t~mem2;havoc __ieee754_sqrt_#t~union3;call ULTIMATE.dealloc(__ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset);havoc __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset; {577#(= ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} is VALID [2020-07-28 17:39:04,484 INFO L280 TraceCheckUtils]: 3: Hoare triple {577#(= ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} goto; {577#(= ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} is VALID [2020-07-28 17:39:04,484 INFO L280 TraceCheckUtils]: 4: Hoare triple {577#(= ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} assume !(2146435072bv32 == ~bvand32(2146435072bv32, __ieee754_sqrt_~ix0~0)); {577#(= ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} is VALID [2020-07-28 17:39:04,485 INFO L280 TraceCheckUtils]: 5: Hoare triple {577#(= ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} assume ~bvsle32(__ieee754_sqrt_~ix0~0, 0bv32); {577#(= ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} is VALID [2020-07-28 17:39:04,486 INFO L280 TraceCheckUtils]: 6: Hoare triple {577#(= ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} assume 0bv32 == ~bvor32(~bvand32(__ieee754_sqrt_~ix0~0, ~bvnot32(__ieee754_sqrt_~sign~0)), __ieee754_sqrt_~ix1~0);__ieee754_sqrt_#res := __ieee754_sqrt_~x; {593#(= |ULTIMATE.start___ieee754_sqrt_#res| (fp.neg (_ +zero 11 53)))} is VALID [2020-07-28 17:39:04,488 INFO L280 TraceCheckUtils]: 7: Hoare triple {593#(= |ULTIMATE.start___ieee754_sqrt_#res| (fp.neg (_ +zero 11 53)))} main_#t~ret9 := __ieee754_sqrt_#res;main_~res~0 := main_#t~ret9;havoc main_#t~ret9;main_#t~short11 := ~fp.eq~DOUBLE(main_~res~0, ~fp.neg~DOUBLE(~Pluszero~DOUBLE())); {597#|ULTIMATE.start_main_#t~short11|} is VALID [2020-07-28 17:39:04,488 INFO L280 TraceCheckUtils]: 8: Hoare triple {597#|ULTIMATE.start_main_#t~short11|} assume !main_#t~short11; {570#false} is VALID [2020-07-28 17:39:04,488 INFO L280 TraceCheckUtils]: 9: Hoare triple {570#false} assume !main_#t~short11;havoc main_#t~short11;havoc main_#t~ret10; {570#false} is VALID [2020-07-28 17:39:04,489 INFO L280 TraceCheckUtils]: 10: Hoare triple {570#false} assume !false; {570#false} is VALID [2020-07-28 17:39:04,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:39:04,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:39:04,555 INFO L280 TraceCheckUtils]: 10: Hoare triple {570#false} assume !false; {570#false} is VALID [2020-07-28 17:39:04,555 INFO L280 TraceCheckUtils]: 9: Hoare triple {570#false} assume !main_#t~short11;havoc main_#t~short11;havoc main_#t~ret10; {570#false} is VALID [2020-07-28 17:39:04,557 INFO L280 TraceCheckUtils]: 8: Hoare triple {597#|ULTIMATE.start_main_#t~short11|} assume !main_#t~short11; {570#false} is VALID [2020-07-28 17:39:04,558 INFO L280 TraceCheckUtils]: 7: Hoare triple {616#(fp.eq |ULTIMATE.start___ieee754_sqrt_#res| (fp.neg (_ +zero 11 53)))} main_#t~ret9 := __ieee754_sqrt_#res;main_~res~0 := main_#t~ret9;havoc main_#t~ret9;main_#t~short11 := ~fp.eq~DOUBLE(main_~res~0, ~fp.neg~DOUBLE(~Pluszero~DOUBLE())); {597#|ULTIMATE.start_main_#t~short11|} is VALID [2020-07-28 17:39:04,559 INFO L280 TraceCheckUtils]: 6: Hoare triple {620#(fp.eq ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} assume 0bv32 == ~bvor32(~bvand32(__ieee754_sqrt_~ix0~0, ~bvnot32(__ieee754_sqrt_~sign~0)), __ieee754_sqrt_~ix1~0);__ieee754_sqrt_#res := __ieee754_sqrt_~x; {616#(fp.eq |ULTIMATE.start___ieee754_sqrt_#res| (fp.neg (_ +zero 11 53)))} is VALID [2020-07-28 17:39:04,560 INFO L280 TraceCheckUtils]: 5: Hoare triple {620#(fp.eq ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} assume ~bvsle32(__ieee754_sqrt_~ix0~0, 0bv32); {620#(fp.eq ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} is VALID [2020-07-28 17:39:04,561 INFO L280 TraceCheckUtils]: 4: Hoare triple {620#(fp.eq ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} assume !(2146435072bv32 == ~bvand32(2146435072bv32, __ieee754_sqrt_~ix0~0)); {620#(fp.eq ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} is VALID [2020-07-28 17:39:04,568 INFO L280 TraceCheckUtils]: 3: Hoare triple {620#(fp.eq ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} goto; {620#(fp.eq ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} is VALID [2020-07-28 17:39:04,569 INFO L280 TraceCheckUtils]: 2: Hoare triple {620#(fp.eq ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} call __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset := #Ultimate.allocOnStack(8bv32);call write~intFLOATTYPE8(__ieee754_sqrt_~x, __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, 8bv32);call __ieee754_sqrt_#t~mem0 := read~intINTTYPE4(__ieee754_sqrt_~#ew_u~0.base, ~bvadd32(4bv32, __ieee754_sqrt_~#ew_u~0.offset), 4bv32);__ieee754_sqrt_~ix0~0 := __ieee754_sqrt_#t~mem0;call write~intFLOATTYPE8(__ieee754_sqrt_#t~union1, __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, 8bv32);havoc __ieee754_sqrt_#t~mem0;havoc __ieee754_sqrt_#t~union1;call __ieee754_sqrt_#t~mem2 := read~intINTTYPE4(__ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, 4bv32);__ieee754_sqrt_~ix1~0 := __ieee754_sqrt_#t~mem2;call write~intFLOATTYPE8(__ieee754_sqrt_#t~union3, __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, 8bv32);havoc __ieee754_sqrt_#t~mem2;havoc __ieee754_sqrt_#t~union3;call ULTIMATE.dealloc(__ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset);havoc __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset; {620#(fp.eq ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} is VALID [2020-07-28 17:39:04,570 INFO L280 TraceCheckUtils]: 1: Hoare triple {569#true} havoc main_#res;havoc main_#t~ret9, main_#t~ret10, main_#t~short11, main_~x~0, main_~res~0;main_~x~0 := ~fp.neg~DOUBLE(~Pluszero~DOUBLE());__ieee754_sqrt_#in~x := main_~x~0;havoc __ieee754_sqrt_#res;havoc __ieee754_sqrt_#t~mem0, __ieee754_sqrt_#t~union1, __ieee754_sqrt_#t~mem2, __ieee754_sqrt_#t~union3, __ieee754_sqrt_~#ew_u~0.base, __ieee754_sqrt_~#ew_u~0.offset, __ieee754_sqrt_#t~post4, __ieee754_sqrt_#t~mem5, __ieee754_sqrt_#t~union6.lsw, __ieee754_sqrt_#t~union6.msw, __ieee754_sqrt_~#iw_u~0.base, __ieee754_sqrt_~#iw_u~0.offset, __ieee754_sqrt_~x, __ieee754_sqrt_~z~0, __ieee754_sqrt_~sign~0, __ieee754_sqrt_~r~0, __ieee754_sqrt_~t1~0, __ieee754_sqrt_~s1~0, __ieee754_sqrt_~ix1~0, __ieee754_sqrt_~q1~0, __ieee754_sqrt_~ix0~0, __ieee754_sqrt_~s0~0, __ieee754_sqrt_~q~0, __ieee754_sqrt_~m~0, __ieee754_sqrt_~t~0, __ieee754_sqrt_~i~0;__ieee754_sqrt_~x := __ieee754_sqrt_#in~x;havoc __ieee754_sqrt_~z~0;__ieee754_sqrt_~sign~0 := 2147483648bv32;havoc __ieee754_sqrt_~r~0;havoc __ieee754_sqrt_~t1~0;havoc __ieee754_sqrt_~s1~0;havoc __ieee754_sqrt_~ix1~0;havoc __ieee754_sqrt_~q1~0;havoc __ieee754_sqrt_~ix0~0;havoc __ieee754_sqrt_~s0~0;havoc __ieee754_sqrt_~q~0;havoc __ieee754_sqrt_~m~0;havoc __ieee754_sqrt_~t~0;havoc __ieee754_sqrt_~i~0; {620#(fp.eq ULTIMATE.start___ieee754_sqrt_~x (fp.neg (_ +zero 11 53)))} is VALID [2020-07-28 17:39:04,570 INFO L280 TraceCheckUtils]: 0: Hoare triple {569#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;~one_sqrt~0 := ~to_fp~DOUBLE(currentRoundingMode, 1.0);~tiny_sqrt~0 := ~to_fp~DOUBLE(currentRoundingMode, 1.0E-300); {569#true} is VALID [2020-07-28 17:39:04,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:39:04,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408007114] [2020-07-28 17:39:04,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:39:04,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-07-28 17:39:04,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652931194] [2020-07-28 17:39:04,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-07-28 17:39:04,572 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:39:04,573 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-28 17:39:04,616 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:39:04,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-28 17:39:04,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:39:04,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-28 17:39:04,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-28 17:39:04,617 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 7 states. [2020-07-28 17:39:12,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:39:12,258 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-07-28 17:39:12,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-28 17:39:12,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-07-28 17:39:12,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:39:12,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-28 17:39:12,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 29 transitions. [2020-07-28 17:39:12,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-28 17:39:12,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 29 transitions. [2020-07-28 17:39:12,262 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 29 transitions. [2020-07-28 17:39:13,446 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:39:13,448 INFO L225 Difference]: With dead ends: 29 [2020-07-28 17:39:13,448 INFO L226 Difference]: Without dead ends: 26 [2020-07-28 17:39:13,449 INFO L675 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 [2020-07-28 17:39:13,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-28 17:39:13,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2020-07-28 17:39:13,463 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:39:13,464 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand 19 states. [2020-07-28 17:39:13,464 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand 19 states. [2020-07-28 17:39:13,464 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 19 states. [2020-07-28 17:39:13,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:39:13,466 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-07-28 17:39:13,466 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-07-28 17:39:13,467 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:39:13,467 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:39:13,467 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 26 states. [2020-07-28 17:39:13,467 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 26 states. [2020-07-28 17:39:13,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:39:13,469 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-07-28 17:39:13,469 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-07-28 17:39:13,470 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:39:13,470 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:39:13,470 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:39:13,470 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:39:13,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-28 17:39:13,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-07-28 17:39:13,472 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2020-07-28 17:39:13,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:39:13,472 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-07-28 17:39:13,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-28 17:39:13,473 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-07-28 17:39:13,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-28 17:39:13,474 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:39:13,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:39:13,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-07-28 17:39:13,678 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:39:13,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:39:13,679 INFO L82 PathProgramCache]: Analyzing trace with hash 239121058, now seen corresponding path program 1 times [2020-07-28 17:39:13,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:39:13,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317656849] [2020-07-28 17:39:13,682 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 [2020-07-28 17:39:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:39:14,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:39:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:39:15,458 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:39:15,558 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-07-28 17:39:15,558 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:39:15,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-07-28 17:39:15,795 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:39:15,796 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:39:15,796 WARN L170 areAnnotationChecker]: L25-2 has no Hoare annotation [2020-07-28 17:39:15,796 WARN L170 areAnnotationChecker]: L25-2 has no Hoare annotation [2020-07-28 17:39:15,796 WARN L170 areAnnotationChecker]: L25-1 has no Hoare annotation [2020-07-28 17:39:15,797 WARN L170 areAnnotationChecker]: L25-1 has no Hoare annotation [2020-07-28 17:39:15,797 WARN L170 areAnnotationChecker]: L25-3 has no Hoare annotation [2020-07-28 17:39:15,797 WARN L170 areAnnotationChecker]: L25-3 has no Hoare annotation [2020-07-28 17:39:15,797 WARN L170 areAnnotationChecker]: L126 has no Hoare annotation [2020-07-28 17:39:15,797 WARN L170 areAnnotationChecker]: L36 has no Hoare annotation [2020-07-28 17:39:15,798 WARN L170 areAnnotationChecker]: L36 has no Hoare annotation [2020-07-28 17:39:15,798 WARN L170 areAnnotationChecker]: L153 has no Hoare annotation [2020-07-28 17:39:15,798 WARN L170 areAnnotationChecker]: L153 has no Hoare annotation [2020-07-28 17:39:15,798 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2020-07-28 17:39:15,798 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2020-07-28 17:39:15,799 WARN L170 areAnnotationChecker]: L36-2 has no Hoare annotation [2020-07-28 17:39:15,799 WARN L170 areAnnotationChecker]: L132-2 has no Hoare annotation [2020-07-28 17:39:15,799 WARN L170 areAnnotationChecker]: L132-2 has no Hoare annotation [2020-07-28 17:39:15,799 WARN L170 areAnnotationChecker]: L153-2 has no Hoare annotation [2020-07-28 17:39:15,799 WARN L170 areAnnotationChecker]: L153-2 has no Hoare annotation [2020-07-28 17:39:15,800 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2020-07-28 17:39:15,800 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2020-07-28 17:39:15,800 WARN L170 areAnnotationChecker]: L44 has no Hoare annotation [2020-07-28 17:39:15,800 WARN L170 areAnnotationChecker]: L44 has no Hoare annotation [2020-07-28 17:39:15,800 WARN L170 areAnnotationChecker]: L132-1 has no Hoare annotation [2020-07-28 17:39:15,801 WARN L170 areAnnotationChecker]: L132-1 has no Hoare annotation [2020-07-28 17:39:15,801 WARN L170 areAnnotationChecker]: L132-3 has no Hoare annotation [2020-07-28 17:39:15,801 WARN L170 areAnnotationChecker]: L154 has no Hoare annotation [2020-07-28 17:39:15,801 WARN L170 areAnnotationChecker]: L154 has no Hoare annotation [2020-07-28 17:39:15,802 WARN L170 areAnnotationChecker]: L158 has no Hoare annotation [2020-07-28 17:39:15,802 WARN L170 areAnnotationChecker]: L45-2 has no Hoare annotation [2020-07-28 17:39:15,802 WARN L170 areAnnotationChecker]: L45-2 has no Hoare annotation [2020-07-28 17:39:15,802 WARN L170 areAnnotationChecker]: L45-2 has no Hoare annotation [2020-07-28 17:39:15,802 WARN L170 areAnnotationChecker]: L44-2 has no Hoare annotation [2020-07-28 17:39:15,803 WARN L170 areAnnotationChecker]: L138 has no Hoare annotation [2020-07-28 17:39:15,803 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:39:15,803 WARN L170 areAnnotationChecker]: L45-3 has no Hoare annotation [2020-07-28 17:39:15,803 WARN L170 areAnnotationChecker]: L58 has no Hoare annotation [2020-07-28 17:39:15,803 WARN L170 areAnnotationChecker]: L58 has no Hoare annotation [2020-07-28 17:39:15,804 WARN L170 areAnnotationChecker]: L50-3 has no Hoare annotation [2020-07-28 17:39:15,804 WARN L170 areAnnotationChecker]: L50-3 has no Hoare annotation [2020-07-28 17:39:15,804 WARN L170 areAnnotationChecker]: L50-3 has no Hoare annotation [2020-07-28 17:39:15,804 WARN L170 areAnnotationChecker]: L58-2 has no Hoare annotation [2020-07-28 17:39:15,805 WARN L170 areAnnotationChecker]: L50-4 has no Hoare annotation [2020-07-28 17:39:15,805 WARN L170 areAnnotationChecker]: L50-2 has no Hoare annotation [2020-07-28 17:39:15,805 WARN L170 areAnnotationChecker]: L69-2 has no Hoare annotation [2020-07-28 17:39:15,805 WARN L170 areAnnotationChecker]: L69-2 has no Hoare annotation [2020-07-28 17:39:15,805 WARN L170 areAnnotationChecker]: L69-2 has no Hoare annotation [2020-07-28 17:39:15,806 WARN L170 areAnnotationChecker]: L69-3 has no Hoare annotation [2020-07-28 17:39:15,806 WARN L170 areAnnotationChecker]: L71 has no Hoare annotation [2020-07-28 17:39:15,806 WARN L170 areAnnotationChecker]: L71 has no Hoare annotation [2020-07-28 17:39:15,806 WARN L170 areAnnotationChecker]: L82-2 has no Hoare annotation [2020-07-28 17:39:15,807 WARN L170 areAnnotationChecker]: L82-2 has no Hoare annotation [2020-07-28 17:39:15,807 WARN L170 areAnnotationChecker]: L82-2 has no Hoare annotation [2020-07-28 17:39:15,807 WARN L170 areAnnotationChecker]: L71-2 has no Hoare annotation [2020-07-28 17:39:15,807 WARN L170 areAnnotationChecker]: L82-3 has no Hoare annotation [2020-07-28 17:39:15,807 WARN L170 areAnnotationChecker]: L82-3 has no Hoare annotation [2020-07-28 17:39:15,808 WARN L170 areAnnotationChecker]: L85 has no Hoare annotation [2020-07-28 17:39:15,808 WARN L170 areAnnotationChecker]: L85 has no Hoare annotation [2020-07-28 17:39:15,808 WARN L170 areAnnotationChecker]: L102 has no Hoare annotation [2020-07-28 17:39:15,808 WARN L170 areAnnotationChecker]: L102 has no Hoare annotation [2020-07-28 17:39:15,808 WARN L170 areAnnotationChecker]: L100 has no Hoare annotation [2020-07-28 17:39:15,809 WARN L170 areAnnotationChecker]: L87 has no Hoare annotation [2020-07-28 17:39:15,809 WARN L170 areAnnotationChecker]: L87 has no Hoare annotation [2020-07-28 17:39:15,809 WARN L170 areAnnotationChecker]: L85-2 has no Hoare annotation [2020-07-28 17:39:15,809 WARN L170 areAnnotationChecker]: L104 has no Hoare annotation [2020-07-28 17:39:15,810 WARN L170 areAnnotationChecker]: L104 has no Hoare annotation [2020-07-28 17:39:15,810 WARN L170 areAnnotationChecker]: L117 has no Hoare annotation [2020-07-28 17:39:15,810 WARN L170 areAnnotationChecker]: L117 has no Hoare annotation [2020-07-28 17:39:15,810 WARN L170 areAnnotationChecker]: L87-2 has no Hoare annotation [2020-07-28 17:39:15,810 WARN L170 areAnnotationChecker]: L107 has no Hoare annotation [2020-07-28 17:39:15,811 WARN L170 areAnnotationChecker]: L107 has no Hoare annotation [2020-07-28 17:39:15,811 WARN L170 areAnnotationChecker]: L117-2 has no Hoare annotation [2020-07-28 17:39:15,811 WARN L170 areAnnotationChecker]: L90 has no Hoare annotation [2020-07-28 17:39:15,811 WARN L170 areAnnotationChecker]: L90 has no Hoare annotation [2020-07-28 17:39:15,812 WARN L170 areAnnotationChecker]: L108 has no Hoare annotation [2020-07-28 17:39:15,812 WARN L170 areAnnotationChecker]: L108 has no Hoare annotation [2020-07-28 17:39:15,812 WARN L170 areAnnotationChecker]: L120-2 has no Hoare annotation [2020-07-28 17:39:15,812 WARN L170 areAnnotationChecker]: L120-2 has no Hoare annotation [2020-07-28 17:39:15,812 WARN L170 areAnnotationChecker]: L90-2 has no Hoare annotation [2020-07-28 17:39:15,813 WARN L170 areAnnotationChecker]: L108-2 has no Hoare annotation [2020-07-28 17:39:15,813 WARN L170 areAnnotationChecker]: L120-1 has no Hoare annotation [2020-07-28 17:39:15,813 WARN L170 areAnnotationChecker]: L120-1 has no Hoare annotation [2020-07-28 17:39:15,813 WARN L170 areAnnotationChecker]: L120-3 has no Hoare annotation [2020-07-28 17:39:15,814 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:39:15,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:39:15 BoogieIcfgContainer [2020-07-28 17:39:15,817 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:39:15,817 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:39:15,817 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:39:15,818 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:39:15,818 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:38:51" (3/4) ... [2020-07-28 17:39:15,821 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 17:39:15,877 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:39:15,878 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:39:15,881 INFO L168 Benchmark]: Toolchain (without parser) took 29921.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 89.1 MB). Free memory was 956.2 MB in the beginning and 765.5 MB in the end (delta: 190.7 MB). Peak memory consumption was 279.9 MB. Max. memory is 11.5 GB. [2020-07-28 17:39:15,882 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:39:15,883 INFO L168 Benchmark]: CACSL2BoogieTranslator took 535.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 89.1 MB). Free memory was 956.2 MB in the beginning and 1.1 GB in the end (delta: -121.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2020-07-28 17:39:15,883 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2020-07-28 17:39:15,884 INFO L168 Benchmark]: Boogie Preprocessor took 56.39 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:39:15,885 INFO L168 Benchmark]: RCFGBuilder took 4413.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.1 MB). Peak memory consumption was 48.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:39:15,885 INFO L168 Benchmark]: TraceAbstraction took 24773.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 772.4 MB in the end (delta: 250.6 MB). Peak memory consumption was 250.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:39:15,886 INFO L168 Benchmark]: Witness Printer took 60.83 ms. Allocated memory is still 1.1 GB. Free memory was 772.4 MB in the beginning and 765.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2020-07-28 17:39:15,890 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 535.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 89.1 MB). Free memory was 956.2 MB in the beginning and 1.1 GB in the end (delta: -121.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 73.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 56.39 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 4413.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.1 MB). Peak memory consumption was 48.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 24773.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 772.4 MB in the end (delta: 250.6 MB). Peak memory consumption was 250.6 MB. Max. memory is 11.5 GB. * Witness Printer took 60.83 ms. Allocated memory is still 1.1 GB. Free memory was 772.4 MB in the beginning and 765.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 154]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L149] double x = -0.0; [L20] double z; [L21] __int32_t sign = 0x80000000; [L22] __uint32_t r, t1, s1, ix1, q1; [L23] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L26] ieee_double_shape_type ew_u; [L27] ew_u.value = (x) [L28] EXPR ew_u.parts.msw [L28] (ix0) = ew_u.parts.msw [L29] EXPR ew_u.parts.lsw [L29] (ix1) = ew_u.parts.lsw [L32] COND FALSE !((ix0 & 0x7ff00000) == 0x7ff00000) VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L36] COND TRUE ix0 <= 0 VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L37] COND FALSE !(((ix0 & (~sign)) | ix1) == 0) VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L39] COND TRUE ix0 < 0 [L40] return (x - x) / (x - x); VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L150] double res = __ieee754_sqrt(x); [L153] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L153] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L154] __VERIFIER_error() VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 19.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 93 SDslu, 37 SDs, 0 SdLazy, 29 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred 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, 1.4s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 3 QuantifiedInterpolants, 1306 SizeOfPredicates, 10 NumberOfNonLiveVariables, 91 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...