./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-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 3bb1d9e312234d5c4f7ead2dcb51cc43e4ff3aebeffef1b0758f6a0d5be2ea9b --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 13:59:33,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 13:59:33,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 13:59:33,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 13:59:33,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 13:59:33,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 13:59:33,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 13:59:33,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 13:59:33,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 13:59:33,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 13:59:33,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 13:59:33,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 13:59:33,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 13:59:33,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 13:59:33,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 13:59:33,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 13:59:33,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 13:59:33,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 13:59:33,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 13:59:33,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 13:59:33,510 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 13:59:33,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 13:59:33,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 13:59:33,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 13:59:33,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 13:59:33,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 13:59:33,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 13:59:33,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 13:59:33,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 13:59:33,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 13:59:33,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 13:59:33,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 13:59:33,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 13:59:33,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 13:59:33,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 13:59:33,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 13:59:33,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 13:59:33,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 13:59:33,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 13:59:33,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 13:59:33,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 13:59:33,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 13:59:33,526 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 13:59:33,550 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 13:59:33,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 13:59:33,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 13:59:33,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 13:59:33,551 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 13:59:33,551 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 13:59:33,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 13:59:33,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 13:59:33,551 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 13:59:33,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 13:59:33,552 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 13:59:33,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 13:59:33,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 13:59:33,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 13:59:33,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 13:59:33,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 13:59:33,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 13:59:33,552 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 13:59:33,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 13:59:33,553 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 13:59:33,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 13:59:33,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 13:59:33,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 13:59:33,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 13:59:33,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 13:59:33,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 13:59:33,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 13:59:33,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 13:59:33,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 13:59:33,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 13:59:33,554 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 13:59:33,554 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 13:59:33,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 13:59:33,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bb1d9e312234d5c4f7ead2dcb51cc43e4ff3aebeffef1b0758f6a0d5be2ea9b [2022-07-22 13:59:33,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 13:59:33,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 13:59:33,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 13:59:33,788 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 13:59:33,789 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 13:59:33,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c [2022-07-22 13:59:33,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75250b577/f9bb752372e24eca93d622b6ecb13ae5/FLAGff57ac167 [2022-07-22 13:59:34,236 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 13:59:34,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c [2022-07-22 13:59:34,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75250b577/f9bb752372e24eca93d622b6ecb13ae5/FLAGff57ac167 [2022-07-22 13:59:34,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75250b577/f9bb752372e24eca93d622b6ecb13ae5 [2022-07-22 13:59:34,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 13:59:34,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 13:59:34,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 13:59:34,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 13:59:34,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 13:59:34,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:59:34" (1/1) ... [2022-07-22 13:59:34,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c872e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:34, skipping insertion in model container [2022-07-22 13:59:34,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:59:34" (1/1) ... [2022-07-22 13:59:34,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 13:59:34,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 13:59:34,831 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c[831,844] [2022-07-22 13:59:34,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 13:59:34,873 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 13:59:34,889 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c[831,844] [2022-07-22 13:59:34,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 13:59:34,921 INFO L208 MainTranslator]: Completed translation [2022-07-22 13:59:34,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:34 WrapperNode [2022-07-22 13:59:34,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 13:59:34,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 13:59:34,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 13:59:34,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 13:59:34,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:34" (1/1) ... [2022-07-22 13:59:34,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:34" (1/1) ... [2022-07-22 13:59:34,956 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2022-07-22 13:59:34,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 13:59:34,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 13:59:34,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 13:59:34,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 13:59:34,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:34" (1/1) ... [2022-07-22 13:59:34,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:34" (1/1) ... [2022-07-22 13:59:34,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:34" (1/1) ... [2022-07-22 13:59:34,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:34" (1/1) ... [2022-07-22 13:59:34,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:34" (1/1) ... [2022-07-22 13:59:34,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:34" (1/1) ... [2022-07-22 13:59:34,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:34" (1/1) ... [2022-07-22 13:59:34,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 13:59:34,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 13:59:34,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 13:59:34,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 13:59:35,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:34" (1/1) ... [2022-07-22 13:59:35,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 13:59:35,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 13:59:35,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 13:59:35,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 13:59:35,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 13:59:35,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 13:59:35,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 13:59:35,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 13:59:35,133 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 13:59:35,135 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 13:59:35,281 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 13:59:35,286 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 13:59:35,286 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 13:59:35,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:59:35 BoogieIcfgContainer [2022-07-22 13:59:35,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 13:59:35,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 13:59:35,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 13:59:35,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 13:59:35,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 01:59:34" (1/3) ... [2022-07-22 13:59:35,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec558e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:59:35, skipping insertion in model container [2022-07-22 13:59:35,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:34" (2/3) ... [2022-07-22 13:59:35,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec558e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:59:35, skipping insertion in model container [2022-07-22 13:59:35,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:59:35" (3/3) ... [2022-07-22 13:59:35,295 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_interval.c [2022-07-22 13:59:35,307 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 13:59:35,307 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 13:59:35,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 13:59:35,350 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@54947573, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@460fddf4 [2022-07-22 13:59:35,350 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 13:59:35,354 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:59:35,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-22 13:59:35,360 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:59:35,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:59:35,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:59:35,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:59:35,365 INFO L85 PathProgramCache]: Analyzing trace with hash 334453616, now seen corresponding path program 1 times [2022-07-22 13:59:35,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:59:35,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152070372] [2022-07-22 13:59:35,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:59:35,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:59:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:59:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 13:59:35,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:59:35,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152070372] [2022-07-22 13:59:35,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152070372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:59:35,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:59:35,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 13:59:35,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661073082] [2022-07-22 13:59:35,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:59:35,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 13:59:35,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:59:35,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 13:59:35,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 13:59:35,508 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:59:35,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:59:35,519 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2022-07-22 13:59:35,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 13:59:35,521 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-22 13:59:35,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:59:35,527 INFO L225 Difference]: With dead ends: 29 [2022-07-22 13:59:35,528 INFO L226 Difference]: Without dead ends: 12 [2022-07-22 13:59:35,530 INFO L412 NwaCegarLoop]: 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 [2022-07-22 13:59:35,533 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 13:59:35,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 13:59:35,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-07-22 13:59:35,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-22 13:59:35,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:59:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-07-22 13:59:35,559 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 11 [2022-07-22 13:59:35,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:59:35,559 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-07-22 13:59:35,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:59:35,560 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-07-22 13:59:35,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-22 13:59:35,560 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:59:35,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:59:35,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 13:59:35,561 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:59:35,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:59:35,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1014511986, now seen corresponding path program 1 times [2022-07-22 13:59:35,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:59:35,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019775904] [2022-07-22 13:59:35,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:59:35,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:59:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 13:59:35,587 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 13:59:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 13:59:35,617 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 13:59:35,617 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 13:59:35,619 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 13:59:35,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 13:59:35,624 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 13:59:35,627 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 13:59:35,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 01:59:35 BoogieIcfgContainer [2022-07-22 13:59:35,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 13:59:35,649 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 13:59:35,649 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 13:59:35,649 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 13:59:35,650 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:59:35" (3/4) ... [2022-07-22 13:59:35,652 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 13:59:35,652 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 13:59:35,654 INFO L158 Benchmark]: Toolchain (without parser) took 979.17ms. Allocated memory is still 109.1MB. Free memory was 76.2MB in the beginning and 49.7MB in the end (delta: 26.5MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2022-07-22 13:59:35,654 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 88.1MB. Free memory was 59.9MB in the beginning and 59.9MB in the end (delta: 29.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 13:59:35,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.47ms. Allocated memory is still 109.1MB. Free memory was 76.0MB in the beginning and 86.3MB in the end (delta: -10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 13:59:35,660 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.34ms. Allocated memory is still 109.1MB. Free memory was 86.3MB in the beginning and 84.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 13:59:35,660 INFO L158 Benchmark]: Boogie Preprocessor took 39.65ms. Allocated memory is still 109.1MB. Free memory was 84.9MB in the beginning and 83.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 13:59:35,661 INFO L158 Benchmark]: RCFGBuilder took 289.68ms. Allocated memory is still 109.1MB. Free memory was 83.8MB in the beginning and 73.9MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 13:59:35,661 INFO L158 Benchmark]: TraceAbstraction took 358.73ms. Allocated memory is still 109.1MB. Free memory was 73.3MB in the beginning and 50.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-07-22 13:59:35,662 INFO L158 Benchmark]: Witness Printer took 3.82ms. Allocated memory is still 109.1MB. Free memory was 50.2MB in the beginning and 49.7MB in the end (delta: 473.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 13:59:35,671 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 88.1MB. Free memory was 59.9MB in the beginning and 59.9MB in the end (delta: 29.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.47ms. Allocated memory is still 109.1MB. Free memory was 76.0MB in the beginning and 86.3MB in the end (delta: -10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.34ms. Allocated memory is still 109.1MB. Free memory was 86.3MB in the beginning and 84.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.65ms. Allocated memory is still 109.1MB. Free memory was 84.9MB in the beginning and 83.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 289.68ms. Allocated memory is still 109.1MB. Free memory was 83.8MB in the beginning and 73.9MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 358.73ms. Allocated memory is still 109.1MB. Free memory was 73.3MB in the beginning and 50.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 3.82ms. Allocated memory is still 109.1MB. Free memory was 50.2MB in the beginning and 49.7MB in the end (delta: 473.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is 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() [L52] CALL assume_abort_if_not(d >= 0.1 && d <= 20.0) [L18] COND FALSE !(!cond) VAL [\old(cond)=1, _EPS=1/1000000, cond=1] [L52] RET assume_abort_if_not(d >= 0.1 && d <= 20.0) [L54] CALL, EXPR SqrtR(d) [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; VAL [\old(Input)=49, _EPS=1/1000000, Input=49] [L28] COND TRUE Input <= 1.0 [L28] xn = 1.0 VAL [\old(Input)=49, _EPS=1/1000000, Input=49, xn=1] [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 [\old(Input)=49, _EPS=1/1000000, cond=0, i=0, Input=49, xn=1, xn=1] [L35] COND FALSE !(\read(cond)) VAL [\old(Input)=49, _EPS=1/1000000, cond=0, i=0, Input=49, xn=1, xn=1] [L44] return 1.0 / xnp1; VAL [\old(Input)=49, _EPS=1/1000000, cond=0, i=0, Input=49, xn=1, xn=1] [L54] RET, EXPR SqrtR(d) [L54] r = SqrtR(d) [L56] CALL __VERIFIER_assert(r >= 0.3 && r <= 5.) [L20] COND TRUE !(cond) VAL [\old(cond)=0, _EPS=1/1000000, cond=0] [L20] reach_error() VAL [\old(cond)=0, _EPS=1/1000000, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 17 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, 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=16occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 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 [2022-07-22 13:59:35,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-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 3bb1d9e312234d5c4f7ead2dcb51cc43e4ff3aebeffef1b0758f6a0d5be2ea9b --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 13:59:37,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 13:59:37,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 13:59:37,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 13:59:37,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 13:59:37,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 13:59:37,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 13:59:37,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 13:59:37,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 13:59:37,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 13:59:37,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 13:59:37,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 13:59:37,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 13:59:37,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 13:59:37,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 13:59:37,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 13:59:37,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 13:59:37,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 13:59:37,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 13:59:37,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 13:59:37,757 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 13:59:37,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 13:59:37,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 13:59:37,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 13:59:37,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 13:59:37,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 13:59:37,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 13:59:37,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 13:59:37,769 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 13:59:37,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 13:59:37,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 13:59:37,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 13:59:37,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 13:59:37,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 13:59:37,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 13:59:37,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 13:59:37,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 13:59:37,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 13:59:37,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 13:59:37,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 13:59:37,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 13:59:37,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 13:59:37,782 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-22 13:59:37,817 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 13:59:37,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 13:59:37,818 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 13:59:37,818 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 13:59:37,818 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 13:59:37,819 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 13:59:37,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 13:59:37,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 13:59:37,820 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 13:59:37,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 13:59:37,821 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 13:59:37,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 13:59:37,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 13:59:37,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 13:59:37,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 13:59:37,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 13:59:37,830 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 13:59:37,830 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 13:59:37,830 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 13:59:37,830 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 13:59:37,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 13:59:37,831 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 13:59:37,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 13:59:37,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 13:59:37,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 13:59:37,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 13:59:37,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 13:59:37,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 13:59:37,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 13:59:37,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 13:59:37,833 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 13:59:37,833 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 13:59:37,833 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 13:59:37,833 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 13:59:37,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 13:59:37,834 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 13:59:37,834 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bb1d9e312234d5c4f7ead2dcb51cc43e4ff3aebeffef1b0758f6a0d5be2ea9b [2022-07-22 13:59:38,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 13:59:38,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 13:59:38,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 13:59:38,167 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 13:59:38,167 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 13:59:38,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c [2022-07-22 13:59:38,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/085edbb39/7a9366e6bea047d7bffcd21c1acf2cdf/FLAGd485120b2 [2022-07-22 13:59:38,652 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 13:59:38,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c [2022-07-22 13:59:38,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/085edbb39/7a9366e6bea047d7bffcd21c1acf2cdf/FLAGd485120b2 [2022-07-22 13:59:38,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/085edbb39/7a9366e6bea047d7bffcd21c1acf2cdf [2022-07-22 13:59:38,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 13:59:38,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 13:59:38,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 13:59:38,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 13:59:38,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 13:59:38,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:59:38" (1/1) ... [2022-07-22 13:59:38,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c7302a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:38, skipping insertion in model container [2022-07-22 13:59:38,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:59:38" (1/1) ... [2022-07-22 13:59:38,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 13:59:38,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 13:59:38,865 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c[831,844] [2022-07-22 13:59:38,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 13:59:38,954 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 13:59:38,968 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c[831,844] [2022-07-22 13:59:38,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 13:59:39,001 INFO L208 MainTranslator]: Completed translation [2022-07-22 13:59:39,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:39 WrapperNode [2022-07-22 13:59:39,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 13:59:39,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 13:59:39,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 13:59:39,003 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 13:59:39,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:39" (1/1) ... [2022-07-22 13:59:39,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:39" (1/1) ... [2022-07-22 13:59:39,049 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 64 [2022-07-22 13:59:39,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 13:59:39,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 13:59:39,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 13:59:39,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 13:59:39,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:39" (1/1) ... [2022-07-22 13:59:39,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:39" (1/1) ... [2022-07-22 13:59:39,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:39" (1/1) ... [2022-07-22 13:59:39,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:39" (1/1) ... [2022-07-22 13:59:39,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:39" (1/1) ... [2022-07-22 13:59:39,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:39" (1/1) ... [2022-07-22 13:59:39,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:39" (1/1) ... [2022-07-22 13:59:39,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 13:59:39,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 13:59:39,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 13:59:39,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 13:59:39,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:39" (1/1) ... [2022-07-22 13:59:39,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 13:59:39,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 13:59:39,120 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 13:59:39,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 13:59:39,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 13:59:39,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-22 13:59:39,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 13:59:39,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 13:59:39,218 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 13:59:39,219 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 13:59:47,500 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 13:59:47,504 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 13:59:47,505 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 13:59:47,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:59:47 BoogieIcfgContainer [2022-07-22 13:59:47,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 13:59:47,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 13:59:47,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 13:59:47,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 13:59:47,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 01:59:38" (1/3) ... [2022-07-22 13:59:47,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bae2656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:59:47, skipping insertion in model container [2022-07-22 13:59:47,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:59:39" (2/3) ... [2022-07-22 13:59:47,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bae2656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:59:47, skipping insertion in model container [2022-07-22 13:59:47,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:59:47" (3/3) ... [2022-07-22 13:59:47,514 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_interval.c [2022-07-22 13:59:47,527 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 13:59:47,527 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 13:59:47,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 13:59:47,568 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@195959d0, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f3f022e [2022-07-22 13:59:47,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 13:59:47,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:59:47,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-22 13:59:47,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:59:47,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:59:47,580 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:59:47,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:59:47,587 INFO L85 PathProgramCache]: Analyzing trace with hash 334453616, now seen corresponding path program 1 times [2022-07-22 13:59:47,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 13:59:47,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799092164] [2022-07-22 13:59:47,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:59:47,599 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 13:59:47,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 13:59:47,601 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 13:59:47,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-22 13:59:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:59:48,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 13:59:48,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 13:59:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 13:59:48,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 13:59:48,837 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 13:59:48,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799092164] [2022-07-22 13:59:48,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799092164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:59:48,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:59:48,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 13:59:48,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2354984] [2022-07-22 13:59:48,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:59:48,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 13:59:48,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 13:59:48,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 13:59:48,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 13:59:48,874 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:59:48,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:59:48,886 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2022-07-22 13:59:48,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 13:59:48,888 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-22 13:59:48,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:59:48,894 INFO L225 Difference]: With dead ends: 29 [2022-07-22 13:59:48,895 INFO L226 Difference]: Without dead ends: 12 [2022-07-22 13:59:48,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 13:59:48,903 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 13:59:48,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 13:59:48,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-07-22 13:59:48,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-22 13:59:48,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:59:48,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-07-22 13:59:48,924 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 11 [2022-07-22 13:59:48,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:59:48,924 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-07-22 13:59:48,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:59:48,924 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-07-22 13:59:48,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-22 13:59:48,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:59:48,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:59:48,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-22 13:59:49,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 13:59:49,128 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:59:49,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:59:49,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1014511986, now seen corresponding path program 1 times [2022-07-22 13:59:49,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 13:59:49,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706046761] [2022-07-22 13:59:49,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:59:49,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 13:59:49,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 13:59:49,131 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 13:59:49,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-22 13:59:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:59:50,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 13:59:50,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 13:59:51,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 13:59:51,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 13:59:51,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 13:59:51,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706046761] [2022-07-22 13:59:51,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706046761] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:59:51,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:59:51,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 13:59:51,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397860617] [2022-07-22 13:59:51,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:59:51,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 13:59:51,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 13:59:51,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 13:59:51,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 13:59:51,215 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:59:54,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 13:59:57,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:00:00,453 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:00:02,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:00:02,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:00:02,707 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-07-22 14:00:02,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 14:00:02,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-22 14:00:02,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:00:02,710 INFO L225 Difference]: With dead ends: 19 [2022-07-22 14:00:02,710 INFO L226 Difference]: Without dead ends: 14 [2022-07-22 14:00:02,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 14:00:02,711 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-07-22 14:00:02,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 4 Unknown, 0 Unchecked, 11.5s Time] [2022-07-22 14:00:02,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-22 14:00:02,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-07-22 14:00:02,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:00:02,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-07-22 14:00:02,715 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2022-07-22 14:00:02,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:00:02,716 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-07-22 14:00:02,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:00:02,716 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-07-22 14:00:02,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-22 14:00:02,716 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:00:02,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:00:02,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-22 14:00:02,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:00:02,918 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:00:02,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:00:02,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1505447948, now seen corresponding path program 1 times [2022-07-22 14:00:02,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:00:02,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379233927] [2022-07-22 14:00:02,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:00:02,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:00:02,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:00:02,921 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 14:00:02,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-22 14:00:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:00:09,211 WARN L261 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-22 14:00:09,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:00:28,269 WARN L833 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)) c_~_EPS~0) (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse0)) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (= |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_SqrtR_~Input#1|))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-22 14:01:23,390 WARN L833 $PredicateComparison]: unable to prove that (and (or (and (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_SqrtR_~Input#1|))) (and (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse0)) (= .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (not (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse3 (fp.add c_currentRoundingMode .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse2) .cse3) (fp.mul c_currentRoundingMode .cse2 .cse3)))))))) (= |c_ULTIMATE.start_SqrtR_~cond~0#1| (_ bv0 32))) (and (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse5 (fp.div c_currentRoundingMode .cse4 |ULTIMATE.start_SqrtR_~Input#1|))) (and (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse4)) (= .cse5 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse7 (fp.add c_currentRoundingMode .cse5 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse6) .cse7) (fp.mul c_currentRoundingMode .cse6 .cse7))) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| ((_ to_fp 11 53) c_currentRoundingMode 20.0)))))) (= |c_ULTIMATE.start_SqrtR_~cond~0#1| (_ bv1 32)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-22 14:01:45,138 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_SqrtR_~Input#1|))) (and (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse0)) (= .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (not (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse3 (fp.add c_currentRoundingMode .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse2) .cse3) (fp.mul c_currentRoundingMode .cse2 .cse3)))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-22 14:01:50,801 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:01:56,121 WARN L233 SmtUtils]: Spent 5.32s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:02:01,783 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:02:07,354 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:02:09,846 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_SqrtR_~Input#1|))) (and (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse0)) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (= (fp.div c_currentRoundingMode .cse0 .cse1) |c_ULTIMATE.start_SqrtR_#res#1|) (not (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse3 (fp.add c_currentRoundingMode .cse1 .cse1))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse2) .cse3) (fp.mul c_currentRoundingMode .cse2 .cse3)))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-22 14:02:20,512 WARN L233 SmtUtils]: Spent 5.68s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:02:26,154 WARN L233 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:02:31,439 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:02:37,065 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:02:45,138 WARN L233 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:02:50,458 WARN L233 SmtUtils]: Spent 5.32s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:02:56,101 WARN L233 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:03:01,784 WARN L233 SmtUtils]: Spent 5.68s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:03:09,986 WARN L233 SmtUtils]: Spent 5.69s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:03:15,669 WARN L233 SmtUtils]: Spent 5.68s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:03:21,336 WARN L233 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:03:26,993 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:03:32,700 WARN L233 SmtUtils]: Spent 5.71s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:03:35,441 WARN L833 $PredicateComparison]: unable to prove that (or (and (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse2 (fp.div roundNearestTiesToEven .cse4 |ULTIMATE.start_SqrtR_~Input#1|))) (let ((.cse3 (fp.div roundNearestTiesToEven .cse4 .cse2))) (and (not (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse1 (fp.add roundNearestTiesToEven .cse2 .cse2))) (fp.gt (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse0) .cse1) (fp.mul roundNearestTiesToEven .cse0 .cse1)))) (fp.geq .cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 10.0))) (fp.leq .cse3 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse4))))))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (or (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse8 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse7 (fp.div roundNearestTiesToEven .cse8 |ULTIMATE.start_SqrtR_~Input#1|))) (and (not (let ((.cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse6 (fp.add roundNearestTiesToEven .cse7 .cse7))) (fp.gt (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse5) .cse6) (fp.mul roundNearestTiesToEven .cse5 .cse6)))) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (not (fp.geq (fp.div roundNearestTiesToEven .cse8 .cse7) ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 10.0)))) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse8)))))) (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse12 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse11 (fp.div roundNearestTiesToEven .cse12 |ULTIMATE.start_SqrtR_~Input#1|))) (and (not (let ((.cse9 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse10 (fp.add roundNearestTiesToEven .cse11 .cse11))) (fp.gt (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse9) .cse10) (fp.mul roundNearestTiesToEven .cse9 .cse10)))) (not (fp.leq (fp.div roundNearestTiesToEven .cse12 .cse11) ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse12))))))))) is different from false [2022-07-22 14:03:43,577 WARN L233 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:03:49,180 WARN L233 SmtUtils]: Spent 5.60s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:03:54,494 WARN L233 SmtUtils]: Spent 5.31s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:04:00,162 WARN L233 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:04:08,239 WARN L233 SmtUtils]: Spent 5.61s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:04:13,508 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:04:19,143 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)