./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-benchs/sqrt_Householder_interval.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e1a00cf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-benchs/sqrt_Householder_interval.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f60c1e7f1bcabd47cf7b5def116f38f131aaa102 ................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-benchs/sqrt_Householder_interval.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f60c1e7f1bcabd47cf7b5def116f38f131aaa102 ................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.0-0e1a00c [2020-11-29 12:47:35,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 12:47:35,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 12:47:35,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 12:47:35,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 12:47:35,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 12:47:35,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 12:47:35,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 12:47:35,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 12:47:35,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 12:47:35,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 12:47:35,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 12:47:35,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 12:47:35,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 12:47:35,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 12:47:35,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 12:47:35,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 12:47:35,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 12:47:35,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 12:47:35,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 12:47:35,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 12:47:35,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 12:47:35,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 12:47:35,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 12:47:35,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 12:47:35,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 12:47:35,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 12:47:35,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 12:47:35,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 12:47:35,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 12:47:35,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 12:47:35,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 12:47:35,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 12:47:35,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 12:47:35,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 12:47:35,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 12:47:35,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 12:47:35,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 12:47:35,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 12:47:35,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 12:47:35,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 12:47:35,780 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 12:47:35,836 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 12:47:35,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 12:47:35,841 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 12:47:35,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 12:47:35,842 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 12:47:35,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 12:47:35,842 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 12:47:35,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 12:47:35,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 12:47:35,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 12:47:35,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 12:47:35,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 12:47:35,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 12:47:35,845 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 12:47:35,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 12:47:35,846 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 12:47:35,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 12:47:35,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 12:47:35,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 12:47:35,847 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 12:47:35,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 12:47:35,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 12:47:35,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 12:47:35,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 12:47:35,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 12:47:35,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 12:47:35,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 12:47:35,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 12:47:35,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 12:47:35,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f60c1e7f1bcabd47cf7b5def116f38f131aaa102 [2020-11-29 12:47:36,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 12:47:36,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 12:47:36,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 12:47:36,361 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 12:47:36,367 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 12:47:36,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_Householder_interval.c [2020-11-29 12:47:36,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fe03cdc6/0c06d0756a4c44e1bf83df1c3586ac25/FLAG09b0741f8 [2020-11-29 12:47:37,115 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 12:47:37,116 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_Householder_interval.c [2020-11-29 12:47:37,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fe03cdc6/0c06d0756a4c44e1bf83df1c3586ac25/FLAG09b0741f8 [2020-11-29 12:47:37,506 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fe03cdc6/0c06d0756a4c44e1bf83df1c3586ac25 [2020-11-29 12:47:37,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 12:47:37,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 12:47:37,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 12:47:37,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 12:47:37,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 12:47:37,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:47:37" (1/1) ... [2020-11-29 12:47:37,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a95539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:37, skipping insertion in model container [2020-11-29 12:47:37,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:47:37" (1/1) ... [2020-11-29 12:47:37,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 12:47:37,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 12:47:37,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 12:47:37,857 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 12:47:37,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 12:47:37,900 INFO L208 MainTranslator]: Completed translation [2020-11-29 12:47:37,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:37 WrapperNode [2020-11-29 12:47:37,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 12:47:37,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 12:47:37,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 12:47:37,903 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 12:47:37,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:37" (1/1) ... [2020-11-29 12:47:37,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:37" (1/1) ... [2020-11-29 12:47:37,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 12:47:37,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 12:47:37,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 12:47:37,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 12:47:37,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:37" (1/1) ... [2020-11-29 12:47:37,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:37" (1/1) ... [2020-11-29 12:47:37,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:37" (1/1) ... [2020-11-29 12:47:37,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:37" (1/1) ... [2020-11-29 12:47:37,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:37" (1/1) ... [2020-11-29 12:47:37,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:37" (1/1) ... [2020-11-29 12:47:37,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:37" (1/1) ... [2020-11-29 12:47:37,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 12:47:37,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 12:47:37,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 12:47:37,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 12:47:37,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:37" (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 [2020-11-29 12:47:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 12:47:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 12:47:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 12:47:38,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 12:47:38,416 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 12:47:38,416 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-29 12:47:38,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:47:38 BoogieIcfgContainer [2020-11-29 12:47:38,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 12:47:38,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 12:47:38,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 12:47:38,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 12:47:38,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:47:37" (1/3) ... [2020-11-29 12:47:38,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c65b40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:47:38, skipping insertion in model container [2020-11-29 12:47:38,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:37" (2/3) ... [2020-11-29 12:47:38,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c65b40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:47:38, skipping insertion in model container [2020-11-29 12:47:38,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:47:38" (3/3) ... [2020-11-29 12:47:38,433 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_interval.c [2020-11-29 12:47:38,455 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 12:47:38,460 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 12:47:38,477 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 12:47:38,531 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 12:47:38,536 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 12:47:38,536 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 12:47:38,537 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 12:47:38,537 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 12:47:38,537 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 12:47:38,537 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 12:47:38,538 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 12:47:38,555 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-11-29 12:47:38,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 12:47:38,562 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 12:47:38,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 12:47:38,563 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 12:47:38,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 12:47:38,571 INFO L82 PathProgramCache]: Analyzing trace with hash 334453616, now seen corresponding path program 1 times [2020-11-29 12:47:38,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 12:47:38,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300559278] [2020-11-29 12:47:38,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 12:47:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 12:47:38,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 12:47:38,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300559278] [2020-11-29 12:47:38,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 12:47:38,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 12:47:38,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507443558] [2020-11-29 12:47:38,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 12:47:38,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 12:47:38,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 12:47:38,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 12:47:38,824 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-11-29 12:47:38,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 12:47:38,847 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2020-11-29 12:47:38,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 12:47:38,849 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 12:47:38,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 12:47:38,869 INFO L225 Difference]: With dead ends: 30 [2020-11-29 12:47:38,870 INFO L226 Difference]: Without dead ends: 12 [2020-11-29 12:47:38,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 12:47:38,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-29 12:47:38,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-29 12:47:38,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 12:47:38,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-11-29 12:47:38,926 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 11 [2020-11-29 12:47:38,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 12:47:38,927 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-11-29 12:47:38,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 12:47:38,928 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-11-29 12:47:38,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 12:47:38,930 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 12:47:38,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 12:47:38,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 12:47:38,931 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 12:47:38,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 12:47:38,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1014511986, now seen corresponding path program 1 times [2020-11-29 12:47:38,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 12:47:38,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480025225] [2020-11-29 12:47:38,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 12:47:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 12:47:39,022 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 12:47:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 12:47:39,082 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 12:47:39,126 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 12:47:39,127 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 12:47:39,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 12:47:39,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:47:39 BoogieIcfgContainer [2020-11-29 12:47:39,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 12:47:39,164 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 12:47:39,164 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 12:47:39,164 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 12:47:39,165 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:47:38" (3/4) ... [2020-11-29 12:47:39,169 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 12:47:39,169 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 12:47:39,173 INFO L168 Benchmark]: Toolchain (without parser) took 1657.06 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 24.0 MB in the beginning and 33.0 MB in the end (delta: -9.0 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2020-11-29 12:47:39,174 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 35.7 MB. Free memory was 18.1 MB in the beginning and 18.1 MB in the end (delta: 17.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 12:47:39,175 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.26 ms. Allocated memory is still 46.1 MB. Free memory was 23.4 MB in the beginning and 24.3 MB in the end (delta: -920.9 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-11-29 12:47:39,176 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.63 ms. Allocated memory is still 46.1 MB. Free memory was 24.3 MB in the beginning and 22.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 12:47:39,177 INFO L168 Benchmark]: Boogie Preprocessor took 28.68 ms. Allocated memory is still 46.1 MB. Free memory was 22.7 MB in the beginning and 21.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 12:47:39,178 INFO L168 Benchmark]: RCFGBuilder took 437.55 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.5 MB in the beginning and 40.5 MB in the end (delta: -19.1 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2020-11-29 12:47:39,179 INFO L168 Benchmark]: TraceAbstraction took 741.78 ms. Allocated memory is still 56.6 MB. Free memory was 40.1 MB in the beginning and 33.3 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2020-11-29 12:47:39,180 INFO L168 Benchmark]: Witness Printer took 5.97 ms. Allocated memory is still 56.6 MB. Free memory was 33.3 MB in the beginning and 33.0 MB in the end (delta: 325.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 12:47:39,185 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 35.7 MB. Free memory was 18.1 MB in the beginning and 18.1 MB in the end (delta: 17.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 376.26 ms. Allocated memory is still 46.1 MB. Free memory was 23.4 MB in the beginning and 24.3 MB in the end (delta: -920.9 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.63 ms. Allocated memory is still 46.1 MB. Free memory was 24.3 MB in the beginning and 22.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.68 ms. Allocated memory is still 46.1 MB. Free memory was 22.7 MB in the beginning and 21.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 437.55 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.5 MB in the beginning and 40.5 MB in the end (delta: -19.1 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 741.78 ms. Allocated memory is still 56.6 MB. Free memory was 40.1 MB in the beginning and 33.3 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.97 ms. Allocated memory is still 56.6 MB. Free memory was 33.3 MB in the beginning and 33.0 MB in the end (delta: 325.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 56, overapproximation of someUnaryDOUBLEoperation at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44. Possible FailurePath: [L22] double _EPS = 1e-6; VAL [_EPS=1/1000000] [L49] double d, r; [L51] d = __VERIFIER_nondet_double() [L18] COND FALSE !(!cond) VAL [_EPS=1/1000000] [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; VAL [_EPS=1/1000000] [L28] COND TRUE Input <= 1.0 [L28] xn = 1.0 VAL [_EPS=1/1000000] [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 VAL [_EPS=1/1000000] [L35] COND FALSE !(\read(cond)) VAL [_EPS=1/1000000] [L44] return 1.0 / xnp1; VAL [_EPS=1/1000000] [L54] r = SqrtR(d) [L20] COND TRUE !(cond) VAL [_EPS=1/1000000] [L3] __assert_fail("0", "sqrt_Householder_interval.c", 3, "reach_error") VAL [_EPS=1/1000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 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=17occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-0e1a00c [2020-11-29 12:47:41,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 12:47:41,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 12:47:41,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 12:47:41,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 12:47:41,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 12:47:41,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 12:47:41,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 12:47:41,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 12:47:41,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 12:47:41,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 12:47:41,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 12:47:41,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 12:47:41,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 12:47:41,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 12:47:41,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 12:47:41,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 12:47:41,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 12:47:41,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 12:47:41,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 12:47:41,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 12:47:41,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 12:47:41,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 12:47:41,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 12:47:41,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 12:47:41,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 12:47:41,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 12:47:41,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 12:47:41,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 12:47:41,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 12:47:41,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 12:47:41,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 12:47:41,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 12:47:41,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 12:47:41,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 12:47:41,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 12:47:41,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 12:47:41,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 12:47:41,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 12:47:41,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 12:47:41,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 12:47:41,846 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 12:47:41,900 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 12:47:41,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 12:47:41,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 12:47:41,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 12:47:41,903 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 12:47:41,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 12:47:41,903 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 12:47:41,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 12:47:41,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 12:47:41,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 12:47:41,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 12:47:41,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 12:47:41,905 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 12:47:41,905 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 12:47:41,906 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 12:47:41,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 12:47:41,906 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 12:47:41,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 12:47:41,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 12:47:41,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 12:47:41,907 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 12:47:41,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 12:47:41,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 12:47:41,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 12:47:41,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 12:47:41,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 12:47:41,909 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 12:47:41,909 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 12:47:41,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 12:47:41,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 12:47:41,910 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 12:47:41,910 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f60c1e7f1bcabd47cf7b5def116f38f131aaa102 [2020-11-29 12:47:42,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 12:47:42,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 12:47:42,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 12:47:42,365 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 12:47:42,366 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 12:47:42,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_Householder_interval.c [2020-11-29 12:47:42,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14a848dd3/9005cf15f1e94212bc3c845d60967492/FLAG82f0e9306 [2020-11-29 12:47:42,995 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 12:47:42,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_Householder_interval.c [2020-11-29 12:47:43,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14a848dd3/9005cf15f1e94212bc3c845d60967492/FLAG82f0e9306 [2020-11-29 12:47:43,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14a848dd3/9005cf15f1e94212bc3c845d60967492 [2020-11-29 12:47:43,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 12:47:43,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 12:47:43,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 12:47:43,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 12:47:43,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 12:47:43,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:47:43" (1/1) ... [2020-11-29 12:47:43,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42ae06a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:43, skipping insertion in model container [2020-11-29 12:47:43,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:47:43" (1/1) ... [2020-11-29 12:47:43,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 12:47:43,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 12:47:43,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 12:47:43,816 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 12:47:43,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 12:47:43,902 INFO L208 MainTranslator]: Completed translation [2020-11-29 12:47:43,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:43 WrapperNode [2020-11-29 12:47:43,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 12:47:43,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 12:47:43,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 12:47:43,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 12:47:43,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:43" (1/1) ... [2020-11-29 12:47:43,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:43" (1/1) ... [2020-11-29 12:47:43,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 12:47:43,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 12:47:43,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 12:47:43,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 12:47:43,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:43" (1/1) ... [2020-11-29 12:47:43,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:43" (1/1) ... [2020-11-29 12:47:43,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:43" (1/1) ... [2020-11-29 12:47:43,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:43" (1/1) ... [2020-11-29 12:47:44,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:43" (1/1) ... [2020-11-29 12:47:44,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:43" (1/1) ... [2020-11-29 12:47:44,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:43" (1/1) ... [2020-11-29 12:47:44,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 12:47:44,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 12:47:44,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 12:47:44,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 12:47:44,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:43" (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 [2020-11-29 12:47:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 12:47:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 12:47:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 12:47:44,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 12:47:52,190 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 12:47:52,190 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-29 12:47:52,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:47:52 BoogieIcfgContainer [2020-11-29 12:47:52,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 12:47:52,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 12:47:52,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 12:47:52,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 12:47:52,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:47:43" (1/3) ... [2020-11-29 12:47:52,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412b5bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:47:52, skipping insertion in model container [2020-11-29 12:47:52,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:47:43" (2/3) ... [2020-11-29 12:47:52,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412b5bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:47:52, skipping insertion in model container [2020-11-29 12:47:52,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:47:52" (3/3) ... [2020-11-29 12:47:52,203 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_interval.c [2020-11-29 12:47:52,220 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 12:47:52,224 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 12:47:52,243 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 12:47:52,275 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 12:47:52,276 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 12:47:52,276 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 12:47:52,276 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 12:47:52,276 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 12:47:52,277 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 12:47:52,277 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 12:47:52,277 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 12:47:52,292 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-11-29 12:47:52,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 12:47:52,298 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 12:47:52,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 12:47:52,300 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 12:47:52,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 12:47:52,307 INFO L82 PathProgramCache]: Analyzing trace with hash 334453616, now seen corresponding path program 1 times [2020-11-29 12:47:52,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 12:47:52,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707641380] [2020-11-29 12:47:52,321 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 [2020-11-29 12:47:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 12:47:53,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 12:47:53,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 12:47:53,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 12:47:53,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 12:47:53,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 12:47:53,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707641380] [2020-11-29 12:47:53,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 12:47:53,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 12:47:53,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031119605] [2020-11-29 12:47:53,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 12:47:53,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 12:47:53,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 12:47:53,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 12:47:53,810 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-11-29 12:47:53,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 12:47:53,824 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2020-11-29 12:47:53,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 12:47:53,826 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 12:47:53,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 12:47:53,841 INFO L225 Difference]: With dead ends: 30 [2020-11-29 12:47:53,841 INFO L226 Difference]: Without dead ends: 12 [2020-11-29 12:47:53,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 12:47:53,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-29 12:47:53,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-29 12:47:53,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 12:47:53,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-11-29 12:47:53,883 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 11 [2020-11-29 12:47:53,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 12:47:53,884 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-11-29 12:47:53,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 12:47:53,884 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-11-29 12:47:53,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 12:47:53,885 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 12:47:53,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 12:47:54,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 12:47:54,099 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 12:47:54,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 12:47:54,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1014511986, now seen corresponding path program 1 times [2020-11-29 12:47:54,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 12:47:54,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126376048] [2020-11-29 12:47:54,102 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 [2020-11-29 12:47:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 12:47:55,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 12:47:55,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 12:47:55,873 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-11-29 12:47:56,070 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-11-29 12:47:56,379 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 3 [2020-11-29 12:47:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 12:47:56,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 12:47:58,625 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_7 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_7)) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0)))) is different from false [2020-11-29 12:48:00,694 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_7 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_7)) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0)))) is different from true [2020-11-29 12:48:25,022 WARN L197 SmtUtils]: Spent 12.20 s on a formula simplification that was a NOOP. DAG size: 15 [2020-11-29 12:48:25,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 12:48:25,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126376048] [2020-11-29 12:48:25,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 12:48:25,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-29 12:48:25,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425545756] [2020-11-29 12:48:25,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 12:48:25,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 12:48:25,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 12:48:25,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=24, Unknown=5, NotChecked=10, Total=56 [2020-11-29 12:48:25,059 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 8 states. [2020-11-29 12:48:27,300 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_SqrtR_~xn~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_7 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_7)) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)))) is different from true [2020-11-29 12:48:41,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 12:48:41,847 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-11-29 12:48:41,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 12:48:41,866 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-11-29 12:48:41,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 12:48:41,867 INFO L225 Difference]: With dead ends: 19 [2020-11-29 12:48:41,867 INFO L226 Difference]: Without dead ends: 14 [2020-11-29 12:48:41,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 31.2s TimeCoverageRelationStatistics Valid=19, Invalid=25, Unknown=6, NotChecked=22, Total=72 [2020-11-29 12:48:41,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-29 12:48:41,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-29 12:48:41,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-29 12:48:41,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-11-29 12:48:41,874 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2020-11-29 12:48:41,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 12:48:41,874 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-11-29 12:48:41,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 12:48:41,875 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-11-29 12:48:41,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 12:48:41,876 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 12:48:41,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 12:48:42,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 12:48:42,078 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 12:48:42,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 12:48:42,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1505447948, now seen corresponding path program 1 times [2020-11-29 12:48:42,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 12:48:42,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094823619] [2020-11-29 12:48:42,081 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 [2020-11-29 12:48:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 12:48:48,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 12:48:48,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 12:48:49,739 WARN L197 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-11-29 12:48:50,079 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-29 12:48:50,436 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-29 12:48:52,633 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0))) (= c_ULTIMATE.start_SqrtR_~xn~0 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input)) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0))))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)))) is different from false [2020-11-29 12:48:52,670 INFO L626 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 12:48:52,672 INFO L626 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 12:48:56,264 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 (= (_ bv1 32) c_ULTIMATE.start_SqrtR_~cond~0)) (.cse4 (= c_currentRoundingMode roundNearestTiesToEven))) (or (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 (fp.div c_currentRoundingMode .cse3 ULTIMATE.start_SqrtR_~Input))) (and (fp.geq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0))) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse1 (fp.add c_currentRoundingMode .cse2 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse0) .cse1) (fp.mul c_currentRoundingMode .cse0 .cse1))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse3)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 .cse2))))) .cse4 .cse5) (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse9 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse8 (fp.div c_currentRoundingMode .cse9 ULTIMATE.start_SqrtR_~Input))) (and (fp.geq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0))) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse7 (fp.add c_currentRoundingMode .cse8 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse6) .cse7) (fp.neg (fp.mul c_currentRoundingMode .cse6 .cse7)))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse9)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 .cse8))))) .cse4 .cse5) (and .cse4 (= (_ bv0 32) c_ULTIMATE.start_SqrtR_~cond~0) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse12 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse13 (fp.div c_currentRoundingMode .cse12 ULTIMATE.start_SqrtR_~Input))) (let ((.cse14 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse15 (fp.add c_currentRoundingMode .cse13 c_ULTIMATE.start_SqrtR_~xnp1~0))) (let ((.cse10 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse14) .cse15)) (.cse11 (fp.mul c_currentRoundingMode .cse14 .cse15))) (and (not (fp.gt .cse10 .cse11)) (not (fp.lt .cse10 (fp.neg .cse11))) (fp.geq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0))) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse12)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 .cse13)))))))))) is different from false [2020-11-29 12:48:58,535 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.div c_currentRoundingMode .cse2 ULTIMATE.start_SqrtR_~Input))) (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse5 (fp.add c_currentRoundingMode .cse3 c_ULTIMATE.start_SqrtR_~xnp1~0))) (let ((.cse0 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse4) .cse5)) (.cse1 (fp.mul c_currentRoundingMode .cse4 .cse5))) (and (not (fp.gt .cse0 .cse1)) (not (fp.lt .cse0 (fp.neg .cse1))) (fp.geq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0))) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse2)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 .cse3)))))))) is different from false [2020-11-29 12:49:00,958 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse5 (fp.add c_currentRoundingMode .cse1 .cse1))) (let ((.cse2 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse4) .cse5)) (.cse3 (fp.mul c_currentRoundingMode .cse4 .cse5))) (and (fp.geq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0))) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (= |c_ULTIMATE.start_SqrtR_#res| (fp.div c_currentRoundingMode .cse0 .cse1)) (not (fp.lt .cse2 (fp.neg .cse3))) (not (fp.gt .cse2 .cse3)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0))))))))) is different from false [2020-11-29 12:49:01,012 INFO L626 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 12:49:03,393 INFO L626 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 12:49:21,529 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (or (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.div roundNearestTiesToEven .cse2 ULTIMATE.start_SqrtR_~Input))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse5 (fp.add roundNearestTiesToEven .cse3 .cse3))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse4) .cse5)) (.cse1 (fp.mul roundNearestTiesToEven .cse4 .cse5))) (and (fp.geq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10.0))) (not (fp.lt .cse0 (fp.neg .cse1))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse2)) (not (fp.gt .cse0 .cse1)) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (not (fp.geq (fp.div roundNearestTiesToEven .cse2 .cse3) ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 10.0)))))))))) .cse6) (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse9 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse10 (fp.div roundNearestTiesToEven .cse9 ULTIMATE.start_SqrtR_~Input))) (let ((.cse11 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse12 (fp.add roundNearestTiesToEven .cse10 .cse10))) (let ((.cse7 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse11) .cse12)) (.cse8 (fp.mul roundNearestTiesToEven .cse11 .cse12))) (and (fp.geq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10.0))) (not (fp.lt .cse7 (fp.neg .cse8))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse9)) (not (fp.gt .cse7 .cse8)) (not (fp.leq (fp.div roundNearestTiesToEven .cse9 .cse10) ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) roundNearestTiesToEven 20.0)))))))) .cse6) (and (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse16 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse19 (fp.div roundNearestTiesToEven .cse16 ULTIMATE.start_SqrtR_~Input))) (let ((.cse17 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse18 (fp.add roundNearestTiesToEven .cse19 .cse19))) (let ((.cse13 (fp.div roundNearestTiesToEven .cse16 .cse19)) (.cse14 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse17) .cse18)) (.cse15 (fp.mul roundNearestTiesToEven .cse17 .cse18))) (and (fp.geq .cse13 ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 10.0))) (fp.leq .cse13 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)) (fp.geq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10.0))) (not (fp.lt .cse14 (fp.neg .cse15))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse16)) (not (fp.gt .cse14 .cse15)) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) roundNearestTiesToEven 20.0))))))))))) is different from false [2020-11-29 12:49:34,064 WARN L838 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.div roundNearestTiesToEven .cse2 ULTIMATE.start_SqrtR_~Input))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse5 (fp.add roundNearestTiesToEven .cse3 .cse3))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse4) .cse5)) (.cse1 (fp.mul roundNearestTiesToEven .cse4 .cse5))) (and (fp.geq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10.0))) (not (fp.lt .cse0 (fp.neg .cse1))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse2)) (not (fp.gt .cse0 .cse1)) (not (fp.leq (fp.div roundNearestTiesToEven .cse2 .cse3) ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) roundNearestTiesToEven 20.0)))))))) (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (let ((.cse8 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse9 (fp.div roundNearestTiesToEven .cse8 v_prenex_1))) (let ((.cse10 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse11 (fp.add roundNearestTiesToEven .cse9 .cse9))) (let ((.cse6 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse10) .cse11)) (.cse7 (fp.mul roundNearestTiesToEven .cse10 .cse11))) (and (fp.geq v_prenex_1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10.0))) (not (fp.gt .cse6 .cse7)) (not (fp.leq v_prenex_1 .cse8)) (not (fp.lt .cse6 (fp.neg .cse7))) (fp.leq v_prenex_1 ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (not (fp.geq (fp.div roundNearestTiesToEven .cse8 .cse9) ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 10.0))))))))))) is different from false [2020-11-29 12:49:36,351 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.div roundNearestTiesToEven .cse2 ULTIMATE.start_SqrtR_~Input))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse5 (fp.add roundNearestTiesToEven .cse3 .cse3))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse4) .cse5)) (.cse1 (fp.mul roundNearestTiesToEven .cse4 .cse5))) (and (fp.geq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10.0))) (not (fp.lt .cse0 (fp.neg .cse1))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse2)) (not (fp.gt .cse0 .cse1)) (not (fp.leq (fp.div roundNearestTiesToEven .cse2 .cse3) ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) roundNearestTiesToEven 20.0)))))))) (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (let ((.cse8 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse9 (fp.div roundNearestTiesToEven .cse8 v_prenex_1))) (let ((.cse10 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse11 (fp.add roundNearestTiesToEven .cse9 .cse9))) (let ((.cse6 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse10) .cse11)) (.cse7 (fp.mul roundNearestTiesToEven .cse10 .cse11))) (and (fp.geq v_prenex_1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10.0))) (not (fp.gt .cse6 .cse7)) (not (fp.leq v_prenex_1 .cse8)) (not (fp.lt .cse6 (fp.neg .cse7))) (fp.leq v_prenex_1 ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (not (fp.geq (fp.div roundNearestTiesToEven .cse8 .cse9) ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 10.0))))))))))) is different from true [2020-11-29 12:49:36,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 12:49:36,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 12:49:37,007 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-11-29 12:49:39,236 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 10.0))))) is different from false [2020-11-29 12:49:41,435 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 10.0))))) is different from true [2020-11-29 12:49:43,635 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 10.0))))) (not (= (_ bv0 32) c_ULTIMATE.start_SqrtR_~cond~0))) is different from false [2020-11-29 12:49:45,823 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 10.0))))) (not (= (_ bv0 32) c_ULTIMATE.start_SqrtR_~cond~0))) is different from true [2020-11-29 12:49:48,110 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (let ((.cse0 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse3)) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 .cse3))) (or (fp.gt .cse0 .cse1) (let ((.cse2 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0))) (and (fp.leq .cse2 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 10.0))))) (fp.lt .cse0 (fp.neg .cse1))))) is different from false [2020-11-29 12:49:48,977 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-29 12:49:48,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094823619] [2020-11-29 12:49:48,979 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2020-11-29 12:49:48,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [148936499] [2020-11-29 12:49:48,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-29 12:49:49,020 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (cvc4 --incremental --print-success --lang smt --rewrite-divk) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.createProcess(Executor.java:107) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.(Executor.java:83) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.(Scriptor.java:72) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.solverbuilder.SolverBuilder.buildScript(SolverBuilder.java:149) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.solverbuilder.SolverBuilder.buildAndInitializeSolver(SolverBuilder.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCvc4.constructManagedScript(IpTcStrategyModuleCvc4.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:254) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 33 more [2020-11-29 12:49:49,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876594148] [2020-11-29 12:49:49,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 12:56:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 12:56:13,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-29 12:56:13,421 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@e17afaa [2020-11-29 12:56:13,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-11-29 12:56:13,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-11-29 12:56:13,422 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-11-29 12:56:13,422 INFO L523 BasicCegarLoop]: Counterexample might be feasible [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2020-11-29 12:56:13,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 12:56:13,854 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-29 12:56:13,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:56:13 BoogieIcfgContainer [2020-11-29 12:56:13,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 12:56:13,856 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 12:56:13,856 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 12:56:13,857 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 12:56:13,857 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:47:52" (3/4) ... [2020-11-29 12:56:13,861 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 12:56:13,862 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 12:56:13,867 INFO L168 Benchmark]: Toolchain (without parser) took 510463.05 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 29.7 MB in the beginning and 32.0 MB in the end (delta: -2.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-11-29 12:56:13,870 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 52.4 MB. Free memory was 34.0 MB in the beginning and 33.9 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 12:56:13,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 496.09 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 29.1 MB in the beginning and 49.6 MB in the end (delta: -20.5 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-11-29 12:56:13,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.34 ms. Allocated memory is still 69.2 MB. Free memory was 49.6 MB in the beginning and 47.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 12:56:13,882 INFO L168 Benchmark]: Boogie Preprocessor took 55.92 ms. Allocated memory is still 69.2 MB. Free memory was 47.8 MB in the beginning and 46.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 12:56:13,883 INFO L168 Benchmark]: RCFGBuilder took 8156.48 ms. Allocated memory is still 69.2 MB. Free memory was 46.4 MB in the beginning and 50.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 12:56:13,883 INFO L168 Benchmark]: TraceAbstraction took 501661.24 ms. Allocated memory is still 69.2 MB. Free memory was 49.9 MB in the beginning and 32.0 MB in the end (delta: 17.9 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2020-11-29 12:56:13,884 INFO L168 Benchmark]: Witness Printer took 6.40 ms. Allocated memory is still 69.2 MB. Free memory is still 32.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 12:56:13,890 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 52.4 MB. Free memory was 34.0 MB in the beginning and 33.9 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 496.09 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 29.1 MB in the beginning and 49.6 MB in the end (delta: -20.5 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.34 ms. Allocated memory is still 69.2 MB. Free memory was 49.6 MB in the beginning and 47.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.92 ms. Allocated memory is still 69.2 MB. Free memory was 47.8 MB in the beginning and 46.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 8156.48 ms. Allocated memory is still 69.2 MB. Free memory was 46.4 MB in the beginning and 50.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 501661.24 ms. Allocated memory is still 69.2 MB. Free memory was 49.9 MB in the beginning and 32.0 MB in the end (delta: 17.9 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. * Witness Printer took 6.40 ms. Allocated memory is still 69.2 MB. Free memory is still 32.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] double _EPS = 1e-6; [L49] double d, r; [L51] d = __VERIFIER_nondet_double() [L18] COND FALSE !(!cond) [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; [L28] COND FALSE !(Input <= 1.0) [L28] xn = 1.0/Input [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 [L35] COND FALSE !(\read(cond)) [L44] return 1.0 / xnp1; [L54] r = SqrtR(d) [L20] COND TRUE !(cond) [L3] __assert_fail("0", "sqrt_Householder_interval.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 501.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 16.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 2 SDslu, 10 SDs, 0 SdLazy, 10 SolverSat, 0 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 13.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 31.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 29.6s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 5 QuantifiedInterpolants, 3130 SizeOfPredicates, 7 NumberOfNonLiveVariables, 88 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...