./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-benchs/sqrt_Newton_pseudoconstant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cbb939d5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-benchs/sqrt_Newton_pseudoconstant.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 a9874b894e580352626d8ebc271850c0b42d4635 .................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-benchs/sqrt_Newton_pseudoconstant.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 a9874b894e580352626d8ebc271850c0b42d4635 ............................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.0-cbb939d [2020-11-23 15:59:13,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-23 15:59:13,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-23 15:59:13,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-23 15:59:13,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-23 15:59:13,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-23 15:59:13,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-23 15:59:13,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-23 15:59:13,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-23 15:59:13,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-23 15:59:13,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-23 15:59:13,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-23 15:59:13,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-23 15:59:13,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-23 15:59:13,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-23 15:59:13,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-23 15:59:13,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-23 15:59:13,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-23 15:59:13,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-23 15:59:13,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-23 15:59:13,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-23 15:59:13,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-23 15:59:13,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-23 15:59:13,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-23 15:59:13,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-23 15:59:13,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-23 15:59:13,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-23 15:59:13,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-23 15:59:13,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-23 15:59:13,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-23 15:59:13,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-23 15:59:13,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-23 15:59:13,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-23 15:59:13,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-23 15:59:13,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-23 15:59:13,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-23 15:59:13,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-23 15:59:13,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-23 15:59:13,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-23 15:59:13,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-23 15:59:13,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-23 15:59:13,436 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-23 15:59:13,485 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-23 15:59:13,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-23 15:59:13,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-23 15:59:13,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-23 15:59:13,494 INFO L138 SettingsManager]: * Use SBE=true [2020-11-23 15:59:13,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-23 15:59:13,495 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-23 15:59:13,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-23 15:59:13,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-23 15:59:13,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-23 15:59:13,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-23 15:59:13,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-23 15:59:13,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-23 15:59:13,496 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-23 15:59:13,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-23 15:59:13,496 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-23 15:59:13,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-23 15:59:13,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-23 15:59:13,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-23 15:59:13,497 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-23 15:59:13,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-23 15:59:13,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-23 15:59:13,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-23 15:59:13,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-23 15:59:13,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-23 15:59:13,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-23 15:59:13,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-23 15:59:13,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-23 15:59:13,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-23 15:59:13,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9874b894e580352626d8ebc271850c0b42d4635 [2020-11-23 15:59:13,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-23 15:59:13,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-23 15:59:13,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-23 15:59:13,941 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-23 15:59:13,943 INFO L275 PluginConnector]: CDTParser initialized [2020-11-23 15:59:13,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_Newton_pseudoconstant.c [2020-11-23 15:59:14,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/777fab378/cf13dcfb15554d72826a031388fad684/FLAG4a4fda7a5 [2020-11-23 15:59:14,642 INFO L306 CDTParser]: Found 1 translation units. [2020-11-23 15:59:14,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_Newton_pseudoconstant.c [2020-11-23 15:59:14,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/777fab378/cf13dcfb15554d72826a031388fad684/FLAG4a4fda7a5 [2020-11-23 15:59:15,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/777fab378/cf13dcfb15554d72826a031388fad684 [2020-11-23 15:59:15,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-23 15:59:15,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-23 15:59:15,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-23 15:59:15,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-23 15:59:15,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-23 15:59:15,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:59:15" (1/1) ... [2020-11-23 15:59:15,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21dcf9e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:15, skipping insertion in model container [2020-11-23 15:59:15,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:59:15" (1/1) ... [2020-11-23 15:59:15,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-23 15:59:15,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-23 15:59:15,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 15:59:15,298 INFO L203 MainTranslator]: Completed pre-run [2020-11-23 15:59:15,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 15:59:15,342 INFO L208 MainTranslator]: Completed translation [2020-11-23 15:59:15,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:15 WrapperNode [2020-11-23 15:59:15,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-23 15:59:15,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-23 15:59:15,345 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-23 15:59:15,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-23 15:59:15,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:15" (1/1) ... [2020-11-23 15:59:15,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:15" (1/1) ... [2020-11-23 15:59:15,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-23 15:59:15,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-23 15:59:15,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-23 15:59:15,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-23 15:59:15,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:15" (1/1) ... [2020-11-23 15:59:15,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:15" (1/1) ... [2020-11-23 15:59:15,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:15" (1/1) ... [2020-11-23 15:59:15,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:15" (1/1) ... [2020-11-23 15:59:15,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:15" (1/1) ... [2020-11-23 15:59:15,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:15" (1/1) ... [2020-11-23 15:59:15,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:15" (1/1) ... [2020-11-23 15:59:15,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-23 15:59:15,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-23 15:59:15,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-23 15:59:15,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-23 15:59:15,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-23 15:59:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-23 15:59:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-23 15:59:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-23 15:59:15,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-23 15:59:15,772 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-23 15:59:15,773 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-23 15:59:15,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:59:15 BoogieIcfgContainer [2020-11-23 15:59:15,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-23 15:59:15,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-23 15:59:15,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-23 15:59:15,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-23 15:59:15,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:59:15" (1/3) ... [2020-11-23 15:59:15,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d631071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:59:15, skipping insertion in model container [2020-11-23 15:59:15,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:15" (2/3) ... [2020-11-23 15:59:15,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d631071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:59:15, skipping insertion in model container [2020-11-23 15:59:15,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:59:15" (3/3) ... [2020-11-23 15:59:15,787 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Newton_pseudoconstant.c [2020-11-23 15:59:15,804 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-23 15:59:15,808 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-23 15:59:15,827 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-23 15:59:15,877 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-23 15:59:15,877 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-23 15:59:15,877 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-23 15:59:15,878 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-23 15:59:15,878 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-23 15:59:15,878 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-23 15:59:15,878 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-23 15:59:15,879 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-23 15:59:15,918 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-23 15:59:15,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-23 15:59:15,936 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 15:59:15,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 15:59:15,938 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 15:59:15,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 15:59:15,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2020-11-23 15:59:15,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-23 15:59:15,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256490864] [2020-11-23 15:59:15,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-23 15:59:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 15:59:16,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 15:59:16,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256490864] [2020-11-23 15:59:16,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-23 15:59:16,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-23 15:59:16,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854490025] [2020-11-23 15:59:16,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-23 15:59:16,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-23 15:59:16,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-23 15:59:16,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-23 15:59:16,261 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-23 15:59:16,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 15:59:16,289 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-11-23 15:59:16,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-23 15:59:16,291 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-23 15:59:16,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 15:59:16,312 INFO L225 Difference]: With dead ends: 35 [2020-11-23 15:59:16,317 INFO L226 Difference]: Without dead ends: 14 [2020-11-23 15:59:16,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-23 15:59:16,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-23 15:59:16,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-23 15:59:16,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-23 15:59:16,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-23 15:59:16,366 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2020-11-23 15:59:16,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 15:59:16,367 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-23 15:59:16,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-23 15:59:16,367 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-23 15:59:16,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-23 15:59:16,368 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 15:59:16,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 15:59:16,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-23 15:59:16,369 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 15:59:16,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 15:59:16,370 INFO L82 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2020-11-23 15:59:16,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-23 15:59:16,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469035093] [2020-11-23 15:59:16,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-23 15:59:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 15:59:16,409 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 15:59:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 15:59:16,436 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 15:59:16,464 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-23 15:59:16,464 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-23 15:59:16,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-23 15:59:16,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:59:16 BoogieIcfgContainer [2020-11-23 15:59:16,501 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-23 15:59:16,502 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-23 15:59:16,503 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-23 15:59:16,503 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-23 15:59:16,504 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:59:15" (3/4) ... [2020-11-23 15:59:16,508 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-23 15:59:16,512 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-23 15:59:16,516 INFO L168 Benchmark]: Toolchain (without parser) took 1482.41 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 23.1 MB in the beginning and 41.9 MB in the end (delta: -18.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-11-23 15:59:16,517 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 46.1 MB. Free memory was 28.1 MB in the beginning and 28.1 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 15:59:16,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.09 ms. Allocated memory is still 46.1 MB. Free memory was 22.5 MB in the beginning and 23.6 MB in the end (delta: -1.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-11-23 15:59:16,519 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.93 ms. Allocated memory is still 46.1 MB. Free memory was 23.6 MB in the beginning and 22.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-23 15:59:16,520 INFO L168 Benchmark]: Boogie Preprocessor took 30.09 ms. Allocated memory is still 46.1 MB. Free memory was 22.0 MB in the beginning and 20.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-23 15:59:16,522 INFO L168 Benchmark]: RCFGBuilder took 356.23 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 20.7 MB in the beginning and 31.5 MB in the end (delta: -10.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-11-23 15:59:16,523 INFO L168 Benchmark]: TraceAbstraction took 723.61 ms. Allocated memory is still 58.7 MB. Free memory was 31.0 MB in the beginning and 25.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2020-11-23 15:59:16,524 INFO L168 Benchmark]: Witness Printer took 10.11 ms. Allocated memory is still 58.7 MB. Free memory was 25.9 MB in the beginning and 41.9 MB in the end (delta: -15.9 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2020-11-23 15:59:16,529 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 46.1 MB. Free memory was 28.1 MB in the beginning and 28.1 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.09 ms. Allocated memory is still 46.1 MB. Free memory was 22.5 MB in the beginning and 23.6 MB in the end (delta: -1.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.93 ms. Allocated memory is still 46.1 MB. Free memory was 23.6 MB in the beginning and 22.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.09 ms. Allocated memory is still 46.1 MB. Free memory was 22.0 MB in the beginning and 20.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 356.23 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 20.7 MB in the beginning and 31.5 MB in the end (delta: -10.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 723.61 ms. Allocated memory is still 58.7 MB. Free memory was 31.0 MB in the beginning and 25.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. * Witness Printer took 10.11 ms. Allocated memory is still 58.7 MB. Free memory was 25.9 MB in the beginning and 41.9 MB in the end (delta: -15.9 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 52, overapproximation of someUnaryDOUBLEoperation at line 25, overapproximation of someBinaryArithmeticDOUBLEoperation at line 37. Possible FailurePath: [L15] double _EPS = 1e-6; VAL [_EPS=1/1000000] [L42] double d, dd, r; [L43] double epsilon = 1e-8; [L45] d = 1. VAL [_EPS=1/1000000] [L45] COND TRUE d <= 20. [L47] dd = __VERIFIER_nondet_double() [L11] COND FALSE !(!cond) VAL [_EPS=1/1000000] [L19] double xn, xnp1, residu, lsup, linf; [L20] int i, cond; VAL [_EPS=1/1000000] [L21] COND TRUE Input <= 1.0 [L21] xn = 1.0 VAL [_EPS=1/1000000] [L22] xnp1 = xn [L23] residu = 2.0*_EPS*(xn+xnp1) [L24] lsup = _EPS * (xn+xnp1) [L25] linf = -lsup [L26] cond = ((residu > lsup) || (residu < linf)) [L27] i = 0 VAL [_EPS=1/1000000] [L28] COND FALSE !(\read(cond)) VAL [_EPS=1/1000000] [L37] return 1.0 / xnp1; VAL [_EPS=1/1000000] [L50] r = SqrtR(dd) [L13] COND TRUE !(cond) VAL [_EPS=1/1000000] [L3] __assert_fail("0", "sqrt_Newton_pseudoconstant.c", 3, "reach_error") VAL [_EPS=1/1000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-cbb939d [2020-11-23 15:59:19,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-23 15:59:19,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-23 15:59:19,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-23 15:59:19,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-23 15:59:19,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-23 15:59:19,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-23 15:59:19,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-23 15:59:19,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-23 15:59:19,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-23 15:59:19,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-23 15:59:19,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-23 15:59:19,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-23 15:59:19,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-23 15:59:19,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-23 15:59:19,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-23 15:59:19,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-23 15:59:19,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-23 15:59:19,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-23 15:59:19,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-23 15:59:19,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-23 15:59:19,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-23 15:59:19,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-23 15:59:19,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-23 15:59:19,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-23 15:59:19,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-23 15:59:19,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-23 15:59:19,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-23 15:59:19,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-23 15:59:19,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-23 15:59:19,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-23 15:59:19,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-23 15:59:19,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-23 15:59:19,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-23 15:59:19,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-23 15:59:19,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-23 15:59:19,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-23 15:59:19,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-23 15:59:19,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-23 15:59:19,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-23 15:59:19,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-23 15:59:19,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-23 15:59:19,257 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-23 15:59:19,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-23 15:59:19,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-23 15:59:19,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-23 15:59:19,262 INFO L138 SettingsManager]: * Use SBE=true [2020-11-23 15:59:19,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-23 15:59:19,263 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-23 15:59:19,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-23 15:59:19,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-23 15:59:19,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-23 15:59:19,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-23 15:59:19,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-23 15:59:19,265 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-23 15:59:19,266 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-23 15:59:19,266 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-23 15:59:19,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-23 15:59:19,266 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-23 15:59:19,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-23 15:59:19,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-23 15:59:19,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-23 15:59:19,267 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-23 15:59:19,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-23 15:59:19,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-23 15:59:19,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-23 15:59:19,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-23 15:59:19,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-23 15:59:19,269 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-23 15:59:19,269 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-23 15:59:19,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-23 15:59:19,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-23 15:59:19,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-23 15:59:19,270 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9874b894e580352626d8ebc271850c0b42d4635 [2020-11-23 15:59:19,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-23 15:59:19,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-23 15:59:19,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-23 15:59:19,767 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-23 15:59:19,768 INFO L275 PluginConnector]: CDTParser initialized [2020-11-23 15:59:19,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_Newton_pseudoconstant.c [2020-11-23 15:59:19,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd1e2f9e7/cd604377e97e428e8d35f6538c5f1313/FLAG4adaf7af2 [2020-11-23 15:59:20,587 INFO L306 CDTParser]: Found 1 translation units. [2020-11-23 15:59:20,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_Newton_pseudoconstant.c [2020-11-23 15:59:20,600 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd1e2f9e7/cd604377e97e428e8d35f6538c5f1313/FLAG4adaf7af2 [2020-11-23 15:59:20,916 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd1e2f9e7/cd604377e97e428e8d35f6538c5f1313 [2020-11-23 15:59:20,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-23 15:59:20,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-23 15:59:20,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-23 15:59:20,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-23 15:59:20,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-23 15:59:20,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:59:20" (1/1) ... [2020-11-23 15:59:20,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bb79ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:20, skipping insertion in model container [2020-11-23 15:59:20,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:59:20" (1/1) ... [2020-11-23 15:59:20,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-23 15:59:20,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-23 15:59:21,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 15:59:21,227 INFO L203 MainTranslator]: Completed pre-run [2020-11-23 15:59:21,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 15:59:21,272 INFO L208 MainTranslator]: Completed translation [2020-11-23 15:59:21,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:21 WrapperNode [2020-11-23 15:59:21,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-23 15:59:21,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-23 15:59:21,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-23 15:59:21,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-23 15:59:21,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:21" (1/1) ... [2020-11-23 15:59:21,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:21" (1/1) ... [2020-11-23 15:59:21,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-23 15:59:21,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-23 15:59:21,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-23 15:59:21,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-23 15:59:21,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:21" (1/1) ... [2020-11-23 15:59:21,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:21" (1/1) ... [2020-11-23 15:59:21,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:21" (1/1) ... [2020-11-23 15:59:21,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:21" (1/1) ... [2020-11-23 15:59:21,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:21" (1/1) ... [2020-11-23 15:59:21,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:21" (1/1) ... [2020-11-23 15:59:21,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:21" (1/1) ... [2020-11-23 15:59:21,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-23 15:59:21,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-23 15:59:21,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-23 15:59:21,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-23 15:59:21,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-23 15:59:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-23 15:59:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-23 15:59:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-23 15:59:21,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-23 15:59:30,934 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-23 15:59:30,935 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-23 15:59:30,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:59:30 BoogieIcfgContainer [2020-11-23 15:59:30,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-23 15:59:30,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-23 15:59:30,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-23 15:59:30,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-23 15:59:30,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:59:20" (1/3) ... [2020-11-23 15:59:30,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72104959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:59:30, skipping insertion in model container [2020-11-23 15:59:30,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:21" (2/3) ... [2020-11-23 15:59:30,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72104959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:59:30, skipping insertion in model container [2020-11-23 15:59:30,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:59:30" (3/3) ... [2020-11-23 15:59:30,947 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Newton_pseudoconstant.c [2020-11-23 15:59:30,964 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-23 15:59:30,969 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-23 15:59:30,980 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-23 15:59:31,008 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-23 15:59:31,009 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-23 15:59:31,009 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-23 15:59:31,009 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-23 15:59:31,009 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-23 15:59:31,009 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-23 15:59:31,010 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-23 15:59:31,010 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-23 15:59:31,024 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-23 15:59:31,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-23 15:59:31,031 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 15:59:31,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 15:59:31,032 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 15:59:31,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 15:59:31,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2020-11-23 15:59:31,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 15:59:31,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147609362] [2020-11-23 15:59:31,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-23 15:59:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 15:59:32,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-23 15:59:32,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 15:59:32,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 15:59:32,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-23 15:59:32,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 15:59:32,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147609362] [2020-11-23 15:59:32,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-23 15:59:32,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-23 15:59:32,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805578688] [2020-11-23 15:59:32,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-23 15:59:32,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-23 15:59:32,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-23 15:59:32,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-23 15:59:32,735 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-23 15:59:32,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 15:59:32,754 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-11-23 15:59:32,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-23 15:59:32,756 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-23 15:59:32,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 15:59:32,766 INFO L225 Difference]: With dead ends: 35 [2020-11-23 15:59:32,766 INFO L226 Difference]: Without dead ends: 14 [2020-11-23 15:59:32,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-23 15:59:32,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-23 15:59:32,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-23 15:59:32,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-23 15:59:32,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-23 15:59:32,808 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2020-11-23 15:59:32,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 15:59:32,809 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-23 15:59:32,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-23 15:59:32,809 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-23 15:59:32,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-23 15:59:32,810 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 15:59:32,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 15:59:33,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-23 15:59:33,025 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 15:59:33,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 15:59:33,028 INFO L82 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2020-11-23 15:59:33,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 15:59:33,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925792162] [2020-11-23 15:59:33,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-23 15:59:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 15:59:34,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-23 15:59:34,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 15:59:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 15:59:34,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-23 15:59:36,926 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5)) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0)))) is different from false [2020-11-23 15:59:39,033 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5)) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0)))) is different from true [2020-11-23 15:59:46,461 WARN L194 SmtUtils]: Spent 3.59 s on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2020-11-23 15:59:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 15:59:46,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925792162] [2020-11-23 15:59:46,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-23 15:59:46,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-23 15:59:46,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020513515] [2020-11-23 15:59:46,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-23 15:59:46,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-23 15:59:46,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-23 15:59:46,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=27, Unknown=2, NotChecked=10, Total=56 [2020-11-23 15:59:46,469 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 8 states. [2020-11-23 15:59:49,369 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_SqrtR_~xn~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5)) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)))) is different from true [2020-11-23 16:00:13,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 16:00:13,546 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2020-11-23 16:00:13,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-23 16:00:13,667 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-11-23 16:00:13,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 16:00:13,670 INFO L225 Difference]: With dead ends: 35 [2020-11-23 16:00:13,670 INFO L226 Difference]: Without dead ends: 23 [2020-11-23 16:00:13,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=19, Invalid=28, Unknown=3, NotChecked=22, Total=72 [2020-11-23 16:00:13,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-23 16:00:13,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-11-23 16:00:13,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-23 16:00:13,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-23 16:00:13,679 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2020-11-23 16:00:13,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 16:00:13,679 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-23 16:00:13,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-23 16:00:13,680 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-23 16:00:13,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-23 16:00:13,681 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:00:13,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 16:00:13,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-23 16:00:13,882 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:00:13,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:00:13,884 INFO L82 PathProgramCache]: Analyzing trace with hash -274400360, now seen corresponding path program 1 times [2020-11-23 16:00:13,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 16:00:13,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282924003] [2020-11-23 16:00:13,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-23 16:00:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 16:00:17,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-23 16:00:17,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 16:00:17,892 WARN L194 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-11-23 16:00:17,909 INFO L387 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-23 16:00:17,910 INFO L615 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-23 16:00:18,591 WARN L194 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-23 16:00:18,969 WARN L194 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-23 16:00:21,386 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= c_ULTIMATE.start_SqrtR_~xn~0 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 .cse1)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse0 .cse1)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0))))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)))) is different from false [2020-11-23 16:00:21,403 INFO L615 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-23 16:00:21,406 INFO L615 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-23 16:00:25,962 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_currentRoundingMode roundNearestTiesToEven)) (.cse6 (= (_ bv1 32) c_ULTIMATE.start_SqrtR_~cond~0))) (or (and .cse0 (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0))) (.cse5 (fp.div c_currentRoundingMode .cse1 ULTIMATE.start_SqrtR_~Input))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse1 .cse2)) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse4 (fp.add c_currentRoundingMode .cse5 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse3) .cse4) (fp.mul c_currentRoundingMode .cse3 .cse4))) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse1 .cse2)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 .cse5))))) .cse6) (and .cse0 (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse10 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse12 (fp.div c_currentRoundingMode .cse10 ULTIMATE.start_SqrtR_~Input))) (let ((.cse8 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse9 (fp.add c_currentRoundingMode .cse12 c_ULTIMATE.start_SqrtR_~xnp1~0))) (let ((.cse7 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse8) .cse9)) (.cse11 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (and (not (fp.gt .cse7 (fp.mul c_currentRoundingMode .cse8 .cse9))) (not (fp.lt .cse7 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse10 .cse11)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse10 .cse11)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse10)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 .cse12))))))) (= (_ bv0 32) c_ULTIMATE.start_SqrtR_~cond~0)) (and .cse0 (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse14 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse15 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0))) (.cse13 (fp.div c_currentRoundingMode .cse14 ULTIMATE.start_SqrtR_~Input))) (and (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode .cse13 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse14 .cse15)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse14 .cse15)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse14)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 .cse13))))) .cse6))) is different from false [2020-11-23 16:00:28,431 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse5 (fp.div c_currentRoundingMode .cse3 ULTIMATE.start_SqrtR_~Input))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode .cse5 c_ULTIMATE.start_SqrtR_~xnp1~0))) (let ((.cse0 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2)) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (and (not (fp.gt .cse0 (fp.mul c_currentRoundingMode .cse1 .cse2))) (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse3 .cse4)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse3 .cse4)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse3)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 .cse5)))))))) is different from false [2020-11-23 16:00:30,819 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse5 (fp.div c_currentRoundingMode .cse3 ULTIMATE.start_SqrtR_~Input))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode .cse5 c_ULTIMATE.start_SqrtR_~xnp1~0))) (let ((.cse0 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2)) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (and (not (fp.gt .cse0 (fp.mul c_currentRoundingMode .cse1 .cse2))) (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse3 .cse4)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse3 .cse4)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse3)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 .cse5)))))))) is different from true [2020-11-23 16:00:33,651 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse5 (fp.add c_currentRoundingMode .cse1 .cse1))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0))) (.cse3 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse4) .cse5))) (and (= |c_ULTIMATE.start_SqrtR_#res| (fp.div c_currentRoundingMode .cse0 .cse1)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 .cse2)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse0 .cse2)) (not (fp.lt .cse3 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.gt .cse3 (fp.mul c_currentRoundingMode .cse4 .cse5))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0))))))))) is different from false [2020-11-23 16:00:33,670 INFO L615 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-23 16:00:39,358 INFO L615 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-23 16:00:57,089 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (or (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse4 (fp.add roundNearestTiesToEven .cse5 .cse5))) (let ((.cse2 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse3) .cse4)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse0 .cse1)) (not (fp.lt .cse2 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (not (fp.gt .cse2 (fp.mul roundNearestTiesToEven .cse3 .cse4))) (not (fp.leq (fp.div roundNearestTiesToEven .cse0 .cse5) ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse0 .cse1)))))))) .cse6) (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse7 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse10 (fp.div roundNearestTiesToEven .cse7 ULTIMATE.start_SqrtR_~Input))) (let ((.cse11 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse12 (fp.add roundNearestTiesToEven .cse10 .cse10))) (let ((.cse9 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse11) .cse12)) (.cse8 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse7 .cse8)) (not (fp.lt .cse9 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.geq (fp.div roundNearestTiesToEven .cse7 .cse10) ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse7)) (not (fp.gt .cse9 (fp.mul roundNearestTiesToEven .cse11 .cse12))) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse7 .cse8)))))))) .cse6) (and (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse13 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse19 (fp.div roundNearestTiesToEven .cse13 ULTIMATE.start_SqrtR_~Input))) (let ((.cse17 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse18 (fp.add roundNearestTiesToEven .cse19 .cse19))) (let ((.cse16 (fp.div roundNearestTiesToEven .cse13 .cse19)) (.cse15 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse17) .cse18)) (.cse14 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse13 .cse14)) (not (fp.lt .cse15 ULTIMATE.start_SqrtR_~linf~0)) (fp.geq .cse16 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0))) (fp.leq .cse16 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse13)) (not (fp.gt .cse15 (fp.mul roundNearestTiesToEven .cse17 .cse18))) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse13 .cse14))))))))))) is different from false [2020-11-23 16:01:11,912 WARN L838 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse4 (fp.add roundNearestTiesToEven .cse5 .cse5))) (let ((.cse2 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse3) .cse4)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse0 .cse1)) (not (fp.lt .cse2 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (not (fp.gt .cse2 (fp.mul roundNearestTiesToEven .cse3 .cse4))) (not (fp.leq (fp.div roundNearestTiesToEven .cse0 .cse5) ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse0 .cse1)))))))) (exists ((v_prenex_1 (_ FloatingPoint 11 53)) (v_prenex_2 (_ FloatingPoint 11 53))) (let ((.cse9 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse10 (fp.div roundNearestTiesToEven .cse9 v_prenex_1))) (let ((.cse7 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse8 (fp.add roundNearestTiesToEven .cse10 .cse10))) (let ((.cse11 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0))) (.cse6 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse7) .cse8))) (and (not (fp.gt .cse6 (fp.mul roundNearestTiesToEven .cse7 .cse8))) (not (fp.leq v_prenex_1 .cse9)) (not (fp.geq (fp.div roundNearestTiesToEven .cse9 .cse10) ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (fp.geq v_prenex_1 (fp.sub roundNearestTiesToEven .cse9 .cse11)) (fp.leq v_prenex_1 (fp.add roundNearestTiesToEven .cse9 .cse11)) (not (fp.lt .cse6 v_prenex_2))))))))) is different from false [2020-11-23 16:01:14,652 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse4 (fp.add roundNearestTiesToEven .cse5 .cse5))) (let ((.cse2 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse3) .cse4)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse0 .cse1)) (not (fp.lt .cse2 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (not (fp.gt .cse2 (fp.mul roundNearestTiesToEven .cse3 .cse4))) (not (fp.leq (fp.div roundNearestTiesToEven .cse0 .cse5) ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse0 .cse1)))))))) (exists ((v_prenex_1 (_ FloatingPoint 11 53)) (v_prenex_2 (_ FloatingPoint 11 53))) (let ((.cse9 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse10 (fp.div roundNearestTiesToEven .cse9 v_prenex_1))) (let ((.cse7 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse8 (fp.add roundNearestTiesToEven .cse10 .cse10))) (let ((.cse11 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0))) (.cse6 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse7) .cse8))) (and (not (fp.gt .cse6 (fp.mul roundNearestTiesToEven .cse7 .cse8))) (not (fp.leq v_prenex_1 .cse9)) (not (fp.geq (fp.div roundNearestTiesToEven .cse9 .cse10) ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (fp.geq v_prenex_1 (fp.sub roundNearestTiesToEven .cse9 .cse11)) (fp.leq v_prenex_1 (fp.add roundNearestTiesToEven .cse9 .cse11)) (not (fp.lt .cse6 v_prenex_2))))))))) is different from true [2020-11-23 16:01:14,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 16:01:14,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-23 16:01:17,342 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))))) is different from false [2020-11-23 16:01:21,410 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))))) (not (= (_ bv0 32) c_ULTIMATE.start_SqrtR_~cond~0))) is different from false [2020-11-23 16:01:23,830 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))))) (not (= (_ bv0 32) c_ULTIMATE.start_SqrtR_~cond~0))) is different from true [2020-11-23 16:01:26,363 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_ULTIMATE.start_SqrtR_~linf~0_7 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_7))) (.cse1 (let ((.cse3 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse3) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse3)))) (.cse2 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0))) (and (or .cse0 .cse1 (fp.leq .cse2 ((_ to_fp 11 53) c_currentRoundingMode 5.0))) (or .cse0 .cse1 (fp.geq .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0)))))) is different from false [2020-11-23 16:01:28,926 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_ULTIMATE.start_SqrtR_~linf~0_7 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_7))) (.cse1 (let ((.cse3 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse3) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse3)))) (.cse2 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0))) (and (or .cse0 .cse1 (fp.leq .cse2 ((_ to_fp 11 53) c_currentRoundingMode 5.0))) (or .cse0 .cse1 (fp.geq .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0)))))) is different from true [2020-11-23 16:01:31,920 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse7 (fp.div c_currentRoundingMode .cse5 c_ULTIMATE.start_SqrtR_~Input))) (let ((.cse3 (fp.div c_currentRoundingMode .cse5 .cse7)) (.cse0 (let ((.cse6 (fp.add c_currentRoundingMode .cse7 .cse7))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse6) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse6)))) (.cse2 (fp.leq c_ULTIMATE.start_SqrtR_~Input .cse5))) (and (or .cse0 (forall ((v_prenex_3 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~Input))) (fp.add c_currentRoundingMode .cse1 .cse1))) v_prenex_3)) .cse2 (fp.leq .cse3 ((_ to_fp 11 53) c_currentRoundingMode 5.0))) (or (fp.geq .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_7 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse4 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~Input))) (fp.add c_currentRoundingMode .cse4 .cse4))) v_ULTIMATE.start_SqrtR_~linf~0_7)) .cse0 .cse2))))) is different from false [2020-11-23 16:01:33,448 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-23 16:01:33,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282924003] [2020-11-23 16:01:33,454 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2020-11-23 16:01:33,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2038882104] [2020-11-23 16:01:33,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-23 16:01:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 16:01:39,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-23 16:01:39,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 16:01:39,284 INFO L387 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-23 16:01:39,285 INFO L615 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-23 16:01:39,286 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken [2020-11-23 16:01:39,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218275327] [2020-11-23 16:01:39,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-23 16:03:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 16:03:20,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-23 16:03:20,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 16:03:20,594 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@5f5efcae [2020-11-23 16:03:20,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-11-23 16:03:20,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-11-23 16:03:20,595 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-11-23 16:03:20,595 INFO L523 BasicCegarLoop]: Counterexample might be feasible [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2020-11-23 16:03:21,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-23 16:03:21,258 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-23 16:03:21,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:03:21 BoogieIcfgContainer [2020-11-23 16:03:21,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-23 16:03:21,261 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-23 16:03:21,262 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-23 16:03:21,262 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-23 16:03:21,263 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:59:30" (3/4) ... [2020-11-23 16:03:21,266 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-23 16:03:21,267 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-23 16:03:21,271 INFO L168 Benchmark]: Toolchain (without parser) took 240346.42 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 19.8 MB in the beginning and 19.9 MB in the end (delta: -103.3 kB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2020-11-23 16:03:21,272 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 41.9 MB. Free memory was 22.6 MB in the beginning and 22.6 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:03:21,274 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.12 ms. Allocated memory is still 41.9 MB. Free memory was 19.2 MB in the beginning and 19.7 MB in the end (delta: -559.4 kB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-11-23 16:03:21,274 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.64 ms. Allocated memory is still 41.9 MB. Free memory was 19.7 MB in the beginning and 18.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:03:21,285 INFO L168 Benchmark]: Boogie Preprocessor took 43.33 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.1 MB in the beginning and 34.5 MB in the end (delta: -16.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-11-23 16:03:21,292 INFO L168 Benchmark]: RCFGBuilder took 9561.81 ms. Allocated memory is still 50.3 MB. Free memory was 34.5 MB in the beginning and 31.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-11-23 16:03:21,293 INFO L168 Benchmark]: TraceAbstraction took 230321.49 ms. Allocated memory is still 50.3 MB. Free memory was 31.3 MB in the beginning and 20.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-11-23 16:03:21,294 INFO L168 Benchmark]: Witness Printer took 5.69 ms. Allocated memory is still 50.3 MB. Free memory was 20.2 MB in the beginning and 19.9 MB in the end (delta: 321.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:03:21,310 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 41.9 MB. Free memory was 22.6 MB in the beginning and 22.6 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 344.12 ms. Allocated memory is still 41.9 MB. Free memory was 19.2 MB in the beginning and 19.7 MB in the end (delta: -559.4 kB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.64 ms. Allocated memory is still 41.9 MB. Free memory was 19.7 MB in the beginning and 18.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.33 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.1 MB in the beginning and 34.5 MB in the end (delta: -16.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 9561.81 ms. Allocated memory is still 50.3 MB. Free memory was 34.5 MB in the beginning and 31.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 230321.49 ms. Allocated memory is still 50.3 MB. Free memory was 31.3 MB in the beginning and 20.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.69 ms. Allocated memory is still 50.3 MB. Free memory was 20.2 MB in the beginning and 19.9 MB in the end (delta: 321.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L15] double _EPS = 1e-6; [L42] double d, dd, r; [L43] double epsilon = 1e-8; [L45] d = 1. [L45] COND TRUE d <= 20. [L47] dd = __VERIFIER_nondet_double() [L11] COND FALSE !(!cond) [L19] double xn, xnp1, residu, lsup, linf; [L20] int i, cond; [L21] COND FALSE !(Input <= 1.0) [L21] xn = 1.0/Input [L22] xnp1 = xn [L23] residu = 2.0*_EPS*(xn+xnp1) [L24] lsup = _EPS * (xn+xnp1) [L25] linf = -lsup [L26] cond = ((residu > lsup) || (residu < linf)) [L27] i = 0 [L28] COND FALSE !(\read(cond)) [L37] return 1.0 / xnp1; [L50] r = SqrtR(dd) [L13] COND TRUE !(cond) [L3] __assert_fail("0", "sqrt_Newton_pseudoconstant.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 230.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 27.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 8 SDslu, 22 SDs, 0 SdLazy, 30 SolverSat, 0 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 23.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 13.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=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, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 12.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 44 ConstructedInterpolants, 1 QuantifiedInterpolants, 2992 SizeOfPredicates, 8 NumberOfNonLiveVariables, 94 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...