./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/sqrt_Householder_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 05e3d6bcb2c03efb7d0e810a8633219e291af284 .................................................................................................................................................................................................................................................................................................... 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 ../sv-benchmarks/c/float-benchs/sqrt_Householder_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 05e3d6bcb2c03efb7d0e810a8633219e291af284 .................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-10-24 22:43:16,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 22:43:16,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 22:43:16,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 22:43:16,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 22:43:16,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 22:43:16,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 22:43:16,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 22:43:16,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 22:43:16,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 22:43:16,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 22:43:16,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 22:43:16,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 22:43:16,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 22:43:16,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 22:43:16,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 22:43:16,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 22:43:16,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 22:43:16,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 22:43:16,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 22:43:16,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 22:43:16,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 22:43:16,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 22:43:16,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 22:43:16,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 22:43:16,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 22:43:16,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 22:43:16,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 22:43:16,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 22:43:16,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 22:43:16,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 22:43:16,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 22:43:16,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 22:43:16,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 22:43:16,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 22:43:16,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 22:43:16,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 22:43:16,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 22:43:16,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 22:43:16,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 22:43:16,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 22:43:16,476 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 22:43:16,517 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 22:43:16,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 22:43:16,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 22:43:16,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 22:43:16,519 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 22:43:16,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 22:43:16,520 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 22:43:16,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 22:43:16,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 22:43:16,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 22:43:16,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 22:43:16,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 22:43:16,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 22:43:16,522 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 22:43:16,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 22:43:16,522 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 22:43:16,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 22:43:16,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 22:43:16,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 22:43:16,523 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 22:43:16,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 22:43:16,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:43:16,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 22:43:16,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 22:43:16,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 22:43:16,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 22:43:16,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 22:43:16,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 22:43:16,526 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 22:43:16,526 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05e3d6bcb2c03efb7d0e810a8633219e291af284 [2020-10-24 22:43:16,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 22:43:16,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 22:43:16,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 22:43:16,952 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 22:43:16,957 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 22:43:16,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2020-10-24 22:43:17,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f06809834/1062080dce4944cc9c0b701d34963561/FLAGcf6a84e8f [2020-10-24 22:43:17,677 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 22:43:17,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2020-10-24 22:43:17,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f06809834/1062080dce4944cc9c0b701d34963561/FLAGcf6a84e8f [2020-10-24 22:43:18,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f06809834/1062080dce4944cc9c0b701d34963561 [2020-10-24 22:43:18,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 22:43:18,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 22:43:18,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 22:43:18,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 22:43:18,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 22:43:18,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:43:18" (1/1) ... [2020-10-24 22:43:18,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eebc91b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:18, skipping insertion in model container [2020-10-24 22:43:18,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:43:18" (1/1) ... [2020-10-24 22:43:18,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 22:43:18,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 22:43:18,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:43:18,347 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 22:43:18,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:43:18,392 INFO L208 MainTranslator]: Completed translation [2020-10-24 22:43:18,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:18 WrapperNode [2020-10-24 22:43:18,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 22:43:18,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 22:43:18,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 22:43:18,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 22:43:18,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:18" (1/1) ... [2020-10-24 22:43:18,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:18" (1/1) ... [2020-10-24 22:43:18,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 22:43:18,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 22:43:18,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 22:43:18,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 22:43:18,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:18" (1/1) ... [2020-10-24 22:43:18,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:18" (1/1) ... [2020-10-24 22:43:18,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:18" (1/1) ... [2020-10-24 22:43:18,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:18" (1/1) ... [2020-10-24 22:43:18,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:18" (1/1) ... [2020-10-24 22:43:18,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:18" (1/1) ... [2020-10-24 22:43:18,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:18" (1/1) ... [2020-10-24 22:43:18,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 22:43:18,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 22:43:18,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 22:43:18,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 22:43:18,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:43:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 22:43:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 22:43:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 22:43:18,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 22:43:19,032 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 22:43:19,033 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-24 22:43:19,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:43:19 BoogieIcfgContainer [2020-10-24 22:43:19,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 22:43:19,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 22:43:19,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 22:43:19,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 22:43:19,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:43:18" (1/3) ... [2020-10-24 22:43:19,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a987bcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:43:19, skipping insertion in model container [2020-10-24 22:43:19,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:18" (2/3) ... [2020-10-24 22:43:19,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a987bcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:43:19, skipping insertion in model container [2020-10-24 22:43:19,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:43:19" (3/3) ... [2020-10-24 22:43:19,052 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant.c [2020-10-24 22:43:19,071 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 22:43:19,078 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 22:43:19,095 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 22:43:19,148 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 22:43:19,149 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 22:43:19,149 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 22:43:19,150 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 22:43:19,150 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 22:43:19,150 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 22:43:19,150 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 22:43:19,151 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 22:43:19,171 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-24 22:43:19,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 22:43:19,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:43:19,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:43:19,183 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:43:19,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:43:19,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2020-10-24 22:43:19,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 22:43:19,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283973392] [2020-10-24 22:43:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 22:43:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 22:43:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 22:43:19,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283973392] [2020-10-24 22:43:19,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 22:43:19,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 22:43:19,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083654646] [2020-10-24 22:43:19,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 22:43:19,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 22:43:19,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 22:43:19,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 22:43:19,449 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-24 22:43:19,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:43:19,469 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-10-24 22:43:19,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 22:43:19,471 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-24 22:43:19,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:43:19,480 INFO L225 Difference]: With dead ends: 35 [2020-10-24 22:43:19,481 INFO L226 Difference]: Without dead ends: 14 [2020-10-24 22:43:19,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 22:43:19,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-24 22:43:19,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-24 22:43:19,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-24 22:43:19,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-10-24 22:43:19,528 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2020-10-24 22:43:19,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:43:19,529 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-10-24 22:43:19,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 22:43:19,529 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-10-24 22:43:19,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 22:43:19,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:43:19,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:43:19,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 22:43:19,531 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:43:19,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:43:19,532 INFO L82 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2020-10-24 22:43:19,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 22:43:19,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477231146] [2020-10-24 22:43:19,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 22:43:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 22:43:19,570 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 22:43:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 22:43:19,615 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 22:43:19,658 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 22:43:19,659 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 22:43:19,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 22:43:19,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:43:19 BoogieIcfgContainer [2020-10-24 22:43:19,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 22:43:19,712 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 22:43:19,712 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 22:43:19,712 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 22:43:19,713 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:43:19" (3/4) ... [2020-10-24 22:43:19,717 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 22:43:19,718 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 22:43:19,721 INFO L168 Benchmark]: Toolchain (without parser) took 1668.01 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.1 MB in the beginning and 33.6 MB in the end (delta: -10.5 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. [2020-10-24 22:43:19,722 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 35.7 MB. Free memory was 20.1 MB in the beginning and 20.1 MB in the end (delta: 23.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:43:19,723 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.87 ms. Allocated memory is still 46.1 MB. Free memory was 22.4 MB in the beginning and 21.5 MB in the end (delta: 908.3 kB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-10-24 22:43:19,724 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.64 ms. Allocated memory is still 46.1 MB. Free memory was 21.5 MB in the beginning and 19.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 22:43:19,725 INFO L168 Benchmark]: Boogie Preprocessor took 36.58 ms. Allocated memory is still 46.1 MB. Free memory was 19.9 MB in the beginning and 30.6 MB in the end (delta: -10.7 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-10-24 22:43:19,726 INFO L168 Benchmark]: RCFGBuilder took 557.79 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 30.6 MB in the beginning and 39.5 MB in the end (delta: -8.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-10-24 22:43:19,727 INFO L168 Benchmark]: TraceAbstraction took 670.48 ms. Allocated memory is still 56.6 MB. Free memory was 39.2 MB in the beginning and 33.9 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-10-24 22:43:19,728 INFO L168 Benchmark]: Witness Printer took 5.86 ms. Allocated memory is still 56.6 MB. Free memory was 33.9 MB in the beginning and 33.6 MB in the end (delta: 286.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:43:19,733 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 35.7 MB. Free memory was 20.1 MB in the beginning and 20.1 MB in the end (delta: 23.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.87 ms. Allocated memory is still 46.1 MB. Free memory was 22.4 MB in the beginning and 21.5 MB in the end (delta: 908.3 kB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.64 ms. Allocated memory is still 46.1 MB. Free memory was 21.5 MB in the beginning and 19.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.58 ms. Allocated memory is still 46.1 MB. Free memory was 19.9 MB in the beginning and 30.6 MB in the end (delta: -10.7 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * RCFGBuilder took 557.79 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 30.6 MB in the beginning and 39.5 MB in the end (delta: -8.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 670.48 ms. Allocated memory is still 56.6 MB. Free memory was 39.2 MB in the beginning and 33.9 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.86 ms. Allocated memory is still 56.6 MB. Free memory was 33.9 MB in the beginning and 33.6 MB in the end (delta: 286.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 59, overapproximation of someUnaryDOUBLEoperation at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44. Possible FailurePath: [L22] double _EPS = 1e-6; VAL [_EPS=1/1000000] [L49] double d, dd, r; [L50] double epsilon = 1e-8; [L52] d = 1. VAL [_EPS=1/1000000] [L52] COND TRUE d <= 20. [L54] dd = __VERIFIER_nondet_double() [L18] COND FALSE !(!cond) VAL [_EPS=1/1000000] [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; VAL [_EPS=1/1000000] [L28] COND TRUE Input <= 1.0 [L28] xn = 1.0 VAL [_EPS=1/1000000] [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 VAL [_EPS=1/1000000] [L35] COND FALSE !(\read(cond)) VAL [_EPS=1/1000000] [L44] return 1.0 / xnp1; VAL [_EPS=1/1000000] [L57] r = SqrtR(dd) [L20] COND TRUE !(cond) VAL [_EPS=1/1000000] [L3] __assert_fail("0", "sqrt_Householder_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-a4ecdab [2020-10-24 22:43:22,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 22:43:22,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 22:43:22,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 22:43:22,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 22:43:22,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 22:43:22,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 22:43:22,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 22:43:22,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 22:43:22,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 22:43:22,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 22:43:22,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 22:43:22,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 22:43:22,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 22:43:22,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 22:43:22,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 22:43:22,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 22:43:22,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 22:43:22,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 22:43:22,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 22:43:22,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 22:43:22,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 22:43:22,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 22:43:22,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 22:43:22,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 22:43:22,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 22:43:22,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 22:43:22,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 22:43:22,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 22:43:22,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 22:43:22,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 22:43:22,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 22:43:22,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 22:43:22,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 22:43:22,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 22:43:22,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 22:43:22,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 22:43:22,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 22:43:22,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 22:43:22,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 22:43:22,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 22:43:22,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 22:43:22,530 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 22:43:22,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 22:43:22,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 22:43:22,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 22:43:22,539 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 22:43:22,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 22:43:22,539 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 22:43:22,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 22:43:22,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 22:43:22,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 22:43:22,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 22:43:22,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 22:43:22,542 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 22:43:22,542 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 22:43:22,542 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 22:43:22,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 22:43:22,542 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 22:43:22,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 22:43:22,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 22:43:22,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 22:43:22,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 22:43:22,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 22:43:22,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:43:22,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 22:43:22,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 22:43:22,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 22:43:22,547 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 22:43:22,547 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 22:43:22,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 22:43:22,547 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 22:43:22,548 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 22:43:22,548 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05e3d6bcb2c03efb7d0e810a8633219e291af284 [2020-10-24 22:43:23,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 22:43:23,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 22:43:23,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 22:43:23,069 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 22:43:23,070 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 22:43:23,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2020-10-24 22:43:23,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e821512e6/71291a4acfd544a489dddae40a04ba82/FLAG077425bad [2020-10-24 22:43:23,916 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 22:43:23,917 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2020-10-24 22:43:23,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e821512e6/71291a4acfd544a489dddae40a04ba82/FLAG077425bad [2020-10-24 22:43:24,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e821512e6/71291a4acfd544a489dddae40a04ba82 [2020-10-24 22:43:24,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 22:43:24,258 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 22:43:24,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 22:43:24,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 22:43:24,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 22:43:24,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:43:24" (1/1) ... [2020-10-24 22:43:24,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a5b32b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:24, skipping insertion in model container [2020-10-24 22:43:24,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:43:24" (1/1) ... [2020-10-24 22:43:24,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 22:43:24,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 22:43:24,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:43:24,552 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 22:43:24,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:43:24,615 INFO L208 MainTranslator]: Completed translation [2020-10-24 22:43:24,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:24 WrapperNode [2020-10-24 22:43:24,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 22:43:24,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 22:43:24,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 22:43:24,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 22:43:24,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:24" (1/1) ... [2020-10-24 22:43:24,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:24" (1/1) ... [2020-10-24 22:43:24,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 22:43:24,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 22:43:24,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 22:43:24,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 22:43:24,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:24" (1/1) ... [2020-10-24 22:43:24,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:24" (1/1) ... [2020-10-24 22:43:24,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:24" (1/1) ... [2020-10-24 22:43:24,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:24" (1/1) ... [2020-10-24 22:43:24,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:24" (1/1) ... [2020-10-24 22:43:24,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:24" (1/1) ... [2020-10-24 22:43:24,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:24" (1/1) ... [2020-10-24 22:43:24,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 22:43:24,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 22:43:24,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 22:43:24,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 22:43:24,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:43:24,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 22:43:24,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 22:43:24,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 22:43:24,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 22:43:34,946 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 22:43:34,947 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-24 22:43:34,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:43:34 BoogieIcfgContainer [2020-10-24 22:43:34,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 22:43:34,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 22:43:34,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 22:43:34,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 22:43:34,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:43:24" (1/3) ... [2020-10-24 22:43:34,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f952e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:43:34, skipping insertion in model container [2020-10-24 22:43:34,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:43:24" (2/3) ... [2020-10-24 22:43:34,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f952e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:43:34, skipping insertion in model container [2020-10-24 22:43:34,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:43:34" (3/3) ... [2020-10-24 22:43:34,959 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant.c [2020-10-24 22:43:34,972 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 22:43:34,978 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 22:43:34,992 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 22:43:35,021 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 22:43:35,021 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 22:43:35,021 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 22:43:35,022 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 22:43:35,022 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 22:43:35,022 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 22:43:35,022 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 22:43:35,022 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 22:43:35,037 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-24 22:43:35,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 22:43:35,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:43:35,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:43:35,045 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:43:35,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:43:35,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2020-10-24 22:43:35,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:43:35,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944305736] [2020-10-24 22:43:35,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-24 22:43:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 22:43:36,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 22:43:36,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:43:36,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 22:43:36,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:43:36,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 22:43:36,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944305736] [2020-10-24 22:43:36,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 22:43:36,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 22:43:36,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188188491] [2020-10-24 22:43:36,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 22:43:36,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:43:36,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 22:43:36,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 22:43:36,769 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-24 22:43:36,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:43:36,787 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-10-24 22:43:36,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 22:43:36,788 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-24 22:43:36,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:43:36,799 INFO L225 Difference]: With dead ends: 35 [2020-10-24 22:43:36,799 INFO L226 Difference]: Without dead ends: 14 [2020-10-24 22:43:36,803 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 [2020-10-24 22:43:36,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-24 22:43:36,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-24 22:43:36,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-24 22:43:36,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-10-24 22:43:36,841 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2020-10-24 22:43:36,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:43:36,842 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-10-24 22:43:36,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 22:43:36,843 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-10-24 22:43:36,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 22:43:36,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:43:36,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:43:37,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 22:43:37,058 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:43:37,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:43:37,061 INFO L82 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2020-10-24 22:43:37,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:43:37,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767614364] [2020-10-24 22:43:37,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-24 22:43:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 22:43:38,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-24 22:43:38,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:43:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 22:43:38,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:43:41,026 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 [2020-10-24 22:43:43,146 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 [2020-10-24 22:43:50,535 WARN L193 SmtUtils]: Spent 4.32 s on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2020-10-24 22:43:50,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 22:43:50,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767614364] [2020-10-24 22:43:50,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 22:43:50,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-10-24 22:43:50,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498791984] [2020-10-24 22:43:50,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 22:43:50,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:43:50,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 22:43:50,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=27, Unknown=2, NotChecked=10, Total=56 [2020-10-24 22:43:50,543 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 8 states. [2020-10-24 22:43:53,085 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 [2020-10-24 22:44:13,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:44:13,808 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2020-10-24 22:44:14,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 22:44:14,197 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-24 22:44:14,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:44:14,199 INFO L225 Difference]: With dead ends: 33 [2020-10-24 22:44:14,199 INFO L226 Difference]: Without dead ends: 21 [2020-10-24 22:44:14,201 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 [2020-10-24 22:44:14,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-24 22:44:14,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-10-24 22:44:14,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-24 22:44:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-24 22:44:14,214 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2020-10-24 22:44:14,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:44:14,215 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-24 22:44:14,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 22:44:14,216 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-24 22:44:14,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 22:44:14,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:44:14,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:44:14,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 22:44:14,432 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:44:14,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:44:14,434 INFO L82 PathProgramCache]: Analyzing trace with hash -274400360, now seen corresponding path program 1 times [2020-10-24 22:44:14,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:44:14,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677332118] [2020-10-24 22:44:14,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-24 22:44:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 22:44:17,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-24 22:44:17,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:44:18,303 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-10-24 22:44:18,311 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 22:44:18,876 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-10-24 22:44:19,273 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-10-24 22:44:21,690 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 [2020-10-24 22:44:21,705 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-24 22:44:21,710 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-24 22:44:26,023 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 [2020-10-24 22:44:28,493 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 [2020-10-24 22:44:31,322 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 [2020-10-24 22:44:31,337 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-24 22:44:36,981 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-24 22:44:55,581 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 [2020-10-24 22:45:10,430 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 [2020-10-24 22:45:13,140 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 [2020-10-24 22:45:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 22:45:13,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:45:15,761 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 [2020-10-24 22:45:22,214 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 [2020-10-24 22:45:23,088 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-10-24 22:45:23,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677332118] [2020-10-24 22:45:23,090 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") [2020-10-24 22:45:23,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1145449670] [2020-10-24 22:45:23,091 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 [2020-10-24 22:45:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 22:45:28,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-24 22:45:28,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:45:28,675 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 22:45:28,677 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 [2020-10-24 22:45:28,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324134065] [2020-10-24 22:45:28,678 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 [2020-10-24 22:46:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 22:46:02,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-24 22:46:02,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:46:02,516 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@6be7c42a [2020-10-24 22:46:02,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-24 22:46:02,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-24 22:46:02,517 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-24 22:46:02,517 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 22:46:03,123 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 [2020-10-24 22:46:03,147 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-24 22:46:03,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:46:03 BoogieIcfgContainer [2020-10-24 22:46:03,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 22:46:03,149 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 22:46:03,149 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 22:46:03,149 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 22:46:03,150 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:43:34" (3/4) ... [2020-10-24 22:46:03,153 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 22:46:03,154 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 22:46:03,156 INFO L168 Benchmark]: Toolchain (without parser) took 158904.71 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 29.5 MB in the beginning and 28.7 MB in the end (delta: 805.9 kB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. [2020-10-24 22:46:03,157 INFO L168 Benchmark]: CDTParser took 2.99 ms. Allocated memory is still 37.7 MB. Free memory was 22.5 MB in the beginning and 22.5 MB in the end (delta: 25.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:46:03,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.27 ms. Allocated memory is still 52.4 MB. Free memory was 28.9 MB in the beginning and 31.2 MB in the end (delta: -2.4 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-24 22:46:03,158 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.50 ms. Allocated memory is still 52.4 MB. Free memory was 31.2 MB in the beginning and 29.5 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:46:03,159 INFO L168 Benchmark]: Boogie Preprocessor took 36.66 ms. Allocated memory is still 52.4 MB. Free memory was 29.5 MB in the beginning and 28.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-24 22:46:03,160 INFO L168 Benchmark]: RCFGBuilder took 10221.43 ms. Allocated memory is still 52.4 MB. Free memory was 28.2 MB in the beginning and 27.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2020-10-24 22:46:03,161 INFO L168 Benchmark]: TraceAbstraction took 148197.29 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 26.6 MB in the beginning and 29.2 MB in the end (delta: -2.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-10-24 22:46:03,162 INFO L168 Benchmark]: Witness Printer took 5.11 ms. Allocated memory is still 65.0 MB. Free memory was 29.2 MB in the beginning and 28.7 MB in the end (delta: 464.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:46:03,167 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.99 ms. Allocated memory is still 37.7 MB. Free memory was 22.5 MB in the beginning and 22.5 MB in the end (delta: 25.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 354.27 ms. Allocated memory is still 52.4 MB. Free memory was 28.9 MB in the beginning and 31.2 MB in the end (delta: -2.4 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.50 ms. Allocated memory is still 52.4 MB. Free memory was 31.2 MB in the beginning and 29.5 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.66 ms. Allocated memory is still 52.4 MB. Free memory was 29.5 MB in the beginning and 28.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 10221.43 ms. Allocated memory is still 52.4 MB. Free memory was 28.2 MB in the beginning and 27.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 148197.29 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 26.6 MB in the beginning and 29.2 MB in the end (delta: -2.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.11 ms. Allocated memory is still 65.0 MB. Free memory was 29.2 MB in the beginning and 28.7 MB in the end (delta: 464.4 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: [L22] double _EPS = 1e-6; [L49] double d, dd, r; [L50] double epsilon = 1e-8; [L52] d = 1. [L52] COND TRUE d <= 20. [L54] dd = __VERIFIER_nondet_double() [L18] COND FALSE !(!cond) [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; [L28] COND FALSE !(Input <= 1.0) [L28] xn = 1.0/Input [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 [L35] COND FALSE !(\read(cond)) [L44] return 1.0 / xnp1; [L57] r = SqrtR(dd) [L20] COND TRUE !(cond) [L3] __assert_fail("0", "sqrt_Householder_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: 148.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 23.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 4 SDslu, 23 SDs, 0 SdLazy, 26 SolverSat, 0 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 19.5s 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 3.0s 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...