./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=/tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c -s /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer --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=/tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c -s /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer --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 [2020-11-29 23:58:52,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:58:52,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:58:52,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:58:52,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:58:52,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:58:52,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:58:52,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:58:52,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:58:52,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:58:52,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:58:52,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:58:52,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:58:52,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:58:52,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:58:52,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:58:52,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:58:52,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:58:52,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:58:52,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:58:52,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:58:52,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:58:52,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:58:52,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:58:53,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:58:53,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:58:53,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:58:53,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:58:53,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:58:53,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:58:53,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:58:53,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:58:53,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:58:53,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:58:53,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:58:53,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:58:53,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:58:53,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:58:53,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:58:53,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:58:53,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:58:53,020 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:58:53,071 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:58:53,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:58:53,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:58:53,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:58:53,075 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:58:53,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:58:53,075 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:58:53,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:58:53,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:58:53,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:58:53,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:58:53,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:58:53,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:58:53,078 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:58:53,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:58:53,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:58:53,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:58:53,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:58:53,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:58:53,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:58:53,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:58:53,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:58:53,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:58:53,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:58:53,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:58:53,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:58:53,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:58:53,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:58:53,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:58:53,083 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:/tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05e3d6bcb2c03efb7d0e810a8633219e291af284 [2020-11-29 23:58:53,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:58:53,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:58:53,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:58:53,457 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:58:53,459 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:58:53,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2020-11-29 23:58:53,553 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/data/268918b6a/8d38d5c4dfe9419bb1360ab7381e3e80/FLAG716c3918a [2020-11-29 23:58:54,151 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:58:54,152 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2020-11-29 23:58:54,165 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/data/268918b6a/8d38d5c4dfe9419bb1360ab7381e3e80/FLAG716c3918a [2020-11-29 23:58:54,455 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/data/268918b6a/8d38d5c4dfe9419bb1360ab7381e3e80 [2020-11-29 23:58:54,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:58:54,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:58:54,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:58:54,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:58:54,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:58:54,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:58:54" (1/1) ... [2020-11-29 23:58:54,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10cc974e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:54, skipping insertion in model container [2020-11-29 23:58:54,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:58:54" (1/1) ... [2020-11-29 23:58:54,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:58:54,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:58:54,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:58:54,715 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:58:54,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:58:54,759 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:58:54,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:54 WrapperNode [2020-11-29 23:58:54,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:58:54,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:58:54,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:58:54,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:58:54,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:54" (1/1) ... [2020-11-29 23:58:54,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:54" (1/1) ... [2020-11-29 23:58:54,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:58:54,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:58:54,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:58:54,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:58:54,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:54" (1/1) ... [2020-11-29 23:58:54,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:54" (1/1) ... [2020-11-29 23:58:54,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:54" (1/1) ... [2020-11-29 23:58:54,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:54" (1/1) ... [2020-11-29 23:58:54,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:54" (1/1) ... [2020-11-29 23:58:54,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:54" (1/1) ... [2020-11-29 23:58:54,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:54" (1/1) ... [2020-11-29 23:58:54,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:58:54,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:58:54,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:58:54,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:58:54,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:58:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:58:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:58:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:58:54,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:58:55,363 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:58:55,364 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-29 23:58:55,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:55 BoogieIcfgContainer [2020-11-29 23:58:55,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:58:55,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:58:55,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:58:55,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:58:55,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:58:54" (1/3) ... [2020-11-29 23:58:55,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e20ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:58:55, skipping insertion in model container [2020-11-29 23:58:55,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:54" (2/3) ... [2020-11-29 23:58:55,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e20ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:58:55, skipping insertion in model container [2020-11-29 23:58:55,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:55" (3/3) ... [2020-11-29 23:58:55,377 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant.c [2020-11-29 23:58:55,390 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:58:55,396 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:58:55,412 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 23:58:55,446 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:58:55,447 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:58:55,447 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:58:55,447 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:58:55,447 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:58:55,448 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:58:55,448 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:58:55,448 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:58:55,464 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-29 23:58:55,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:58:55,471 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:55,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:55,472 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:55,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:55,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2020-11-29 23:58:55,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:55,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383232381] [2020-11-29 23:58:55,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:55,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:55,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383232381] [2020-11-29 23:58:55,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:55,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:58:55,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15500325] [2020-11-29 23:58:55,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:58:55,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:55,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:58:55,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:58:55,695 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-29 23:58:55,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:55,712 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-11-29 23:58:55,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:58:55,713 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-29 23:58:55,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:55,721 INFO L225 Difference]: With dead ends: 35 [2020-11-29 23:58:55,722 INFO L226 Difference]: Without dead ends: 14 [2020-11-29 23:58:55,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:58:55,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-29 23:58:55,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-29 23:58:55,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-29 23:58:55,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-29 23:58:55,762 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2020-11-29 23:58:55,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:55,763 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-29 23:58:55,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:58:55,763 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-29 23:58:55,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:58:55,764 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:55,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:55,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:58:55,765 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:55,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:55,766 INFO L82 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2020-11-29 23:58:55,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:55,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098190114] [2020-11-29 23:58:55,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:55,863 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:55,941 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:55,973 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:55,973 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:58:55,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:58:56,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:58:56 BoogieIcfgContainer [2020-11-29 23:58:56,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:58:56,011 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:58:56,012 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:58:56,012 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:58:56,013 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:55" (3/4) ... [2020-11-29 23:58:56,017 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:58:56,017 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:58:56,020 INFO L168 Benchmark]: Toolchain (without parser) took 1559.06 ms. Allocated memory is still 96.5 MB. Free memory was 71.3 MB in the beginning and 69.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:56,021 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 79.7 MB. Free memory is still 50.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:58:56,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.94 ms. Allocated memory is still 96.5 MB. Free memory was 71.0 MB in the beginning and 60.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:56,023 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.03 ms. Allocated memory is still 96.5 MB. Free memory was 60.8 MB in the beginning and 59.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:56,024 INFO L168 Benchmark]: Boogie Preprocessor took 28.83 ms. Allocated memory is still 96.5 MB. Free memory was 59.1 MB in the beginning and 58.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:56,025 INFO L168 Benchmark]: RCFGBuilder took 525.36 ms. Allocated memory is still 96.5 MB. Free memory was 58.0 MB in the beginning and 44.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:56,026 INFO L168 Benchmark]: TraceAbstraction took 643.00 ms. Allocated memory is still 96.5 MB. Free memory was 43.8 MB in the beginning and 70.4 MB in the end (delta: -26.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:58:56,027 INFO L168 Benchmark]: Witness Printer took 5.85 ms. Allocated memory is still 96.5 MB. Free memory is still 69.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:58:56,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 79.7 MB. Free memory is still 50.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.94 ms. Allocated memory is still 96.5 MB. Free memory was 71.0 MB in the beginning and 60.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.03 ms. Allocated memory is still 96.5 MB. Free memory was 60.8 MB in the beginning and 59.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.83 ms. Allocated memory is still 96.5 MB. Free memory was 59.1 MB in the beginning and 58.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 525.36 ms. Allocated memory is still 96.5 MB. Free memory was 58.0 MB in the beginning and 44.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 643.00 ms. Allocated memory is still 96.5 MB. Free memory was 43.8 MB in the beginning and 70.4 MB in the end (delta: -26.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.85 ms. Allocated memory is still 96.5 MB. Free memory is still 69.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: 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, 0.1s 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 [2020-11-29 23:58:58,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:58:58,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:58:59,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:58:59,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:58:59,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:58:59,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:58:59,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:58:59,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:58:59,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:58:59,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:58:59,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:58:59,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:58:59,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:58:59,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:58:59,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:58:59,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:58:59,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:58:59,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:58:59,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:58:59,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:58:59,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:58:59,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:58:59,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:58:59,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:58:59,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:58:59,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:58:59,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:58:59,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:58:59,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:58:59,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:58:59,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:58:59,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:58:59,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:58:59,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:58:59,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:58:59,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:58:59,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:58:59,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:58:59,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:58:59,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:58:59,160 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 23:58:59,241 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:58:59,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:58:59,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:58:59,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:58:59,246 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:58:59,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:58:59,247 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:58:59,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:58:59,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:58:59,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:58:59,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:58:59,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:58:59,250 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 23:58:59,250 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 23:58:59,250 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:58:59,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:58:59,251 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:58:59,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:58:59,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:58:59,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:58:59,252 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:58:59,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:58:59,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:58:59,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:58:59,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:58:59,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:58:59,254 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 23:58:59,254 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 23:58:59,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:58:59,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:58:59,255 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 23:58:59,255 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:/tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05e3d6bcb2c03efb7d0e810a8633219e291af284 [2020-11-29 23:58:59,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:58:59,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:58:59,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:58:59,780 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:58:59,781 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:58:59,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2020-11-29 23:58:59,874 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/data/866f48673/d37e8a9f67cc45f7a16515c801aaf261/FLAG189ffc8ff [2020-11-29 23:59:00,469 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:59:00,470 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2020-11-29 23:59:00,478 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/data/866f48673/d37e8a9f67cc45f7a16515c801aaf261/FLAG189ffc8ff [2020-11-29 23:59:00,860 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/data/866f48673/d37e8a9f67cc45f7a16515c801aaf261 [2020-11-29 23:59:00,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:59:00,867 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:59:00,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:59:00,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:59:00,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:59:00,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:59:00" (1/1) ... [2020-11-29 23:59:00,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14537c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:00, skipping insertion in model container [2020-11-29 23:59:00,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:59:00" (1/1) ... [2020-11-29 23:59:00,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:59:00,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:59:01,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:59:01,172 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:59:01,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:59:01,244 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:59:01,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:01 WrapperNode [2020-11-29 23:59:01,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:59:01,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:59:01,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:59:01,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:59:01,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:01" (1/1) ... [2020-11-29 23:59:01,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:01" (1/1) ... [2020-11-29 23:59:01,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:59:01,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:59:01,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:59:01,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:59:01,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:01" (1/1) ... [2020-11-29 23:59:01,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:01" (1/1) ... [2020-11-29 23:59:01,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:01" (1/1) ... [2020-11-29 23:59:01,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:01" (1/1) ... [2020-11-29 23:59:01,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:01" (1/1) ... [2020-11-29 23:59:01,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:01" (1/1) ... [2020-11-29 23:59:01,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:01" (1/1) ... [2020-11-29 23:59:01,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:59:01,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:59:01,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:59:01,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:59:01,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:59:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 23:59:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:59:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:59:01,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:59:11,495 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:59:11,495 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-29 23:59:11,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:59:11 BoogieIcfgContainer [2020-11-29 23:59:11,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:59:11,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:59:11,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:59:11,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:59:11,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:59:00" (1/3) ... [2020-11-29 23:59:11,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2529979f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:59:11, skipping insertion in model container [2020-11-29 23:59:11,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:01" (2/3) ... [2020-11-29 23:59:11,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2529979f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:59:11, skipping insertion in model container [2020-11-29 23:59:11,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:59:11" (3/3) ... [2020-11-29 23:59:11,506 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant.c [2020-11-29 23:59:11,516 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:59:11,520 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:59:11,533 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 23:59:11,567 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:59:11,568 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:59:11,568 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:59:11,568 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:59:11,568 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:59:11,568 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:59:11,569 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:59:11,569 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:59:11,590 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-29 23:59:11,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:59:11,596 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:59:11,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:59:11,597 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:59:11,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:11,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2020-11-29 23:59:11,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:59:11,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811595976] [2020-11-29 23:59:11,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 23:59:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:59:13,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 23:59:13,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:59:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:59:13,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:59:13,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:59:13,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811595976] [2020-11-29 23:59:13,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:59:13,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 23:59:13,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219052339] [2020-11-29 23:59:13,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:59:13,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:59:13,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:59:13,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:59:13,845 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-29 23:59:13,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:59:13,867 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-11-29 23:59:13,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:59:13,868 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-29 23:59:13,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:59:13,880 INFO L225 Difference]: With dead ends: 35 [2020-11-29 23:59:13,880 INFO L226 Difference]: Without dead ends: 14 [2020-11-29 23:59:13,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:59:13,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-29 23:59:13,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-29 23:59:13,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-29 23:59:13,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-29 23:59:13,923 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2020-11-29 23:59:13,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:59:13,924 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-29 23:59:13,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:59:13,924 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-29 23:59:13,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:59:13,925 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:59:13,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:59:14,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 23:59:14,139 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:59:14,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:14,140 INFO L82 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2020-11-29 23:59:14,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:59:14,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848832117] [2020-11-29 23:59:14,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 23:59:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:59:16,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 23:59:16,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:59:16,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:59:16,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:59:19,119 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5)) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0)))) is different from false [2020-11-29 23:59:21,269 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5)) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0)))) is different from true [2020-11-29 23:59:31,456 WARN L193 SmtUtils]: Spent 4.21 s on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2020-11-29 23:59:31,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:59:31,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848832117] [2020-11-29 23:59:31,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:59:31,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-29 23:59:31,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114026621] [2020-11-29 23:59:31,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 23:59:31,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:59:31,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 23:59:31,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=27, Unknown=2, NotChecked=10, Total=56 [2020-11-29 23:59:31,467 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 8 states. [2020-11-29 23:59:33,953 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_SqrtR_~xn~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5)) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)))) is different from true [2020-11-29 23:59:59,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:59:59,293 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2020-11-29 23:59:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:59:59,295 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-11-29 23:59:59,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:59:59,296 INFO L225 Difference]: With dead ends: 32 [2020-11-29 23:59:59,297 INFO L226 Difference]: Without dead ends: 20 [2020-11-29 23:59:59,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=19, Invalid=28, Unknown=3, NotChecked=22, Total=72 [2020-11-29 23:59:59,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-29 23:59:59,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-29 23:59:59,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 23:59:59,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-29 23:59:59,304 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2020-11-29 23:59:59,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:59:59,305 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-29 23:59:59,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 23:59:59,305 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-29 23:59:59,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:59:59,306 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:59:59,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:59:59,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 23:59:59,529 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:59:59,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:59,530 INFO L82 PathProgramCache]: Analyzing trace with hash -274400360, now seen corresponding path program 1 times [2020-11-29 23:59:59,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:59:59,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786362476] [2020-11-29 23:59:59,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 00:00:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:03,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-30 00:00:03,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:00:04,224 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-11-30 00:00:04,235 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:00:04,875 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-30 00:00:05,492 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-30 00:00:07,976 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= c_ULTIMATE.start_SqrtR_~xn~0 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 .cse1)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse0 .cse1)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0))))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)))) is different from false [2020-11-30 00:00:08,013 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 00:00:08,016 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 00:00:11,165 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_currentRoundingMode roundNearestTiesToEven)) (.cse6 (= (_ bv1 32) c_ULTIMATE.start_SqrtR_~cond~0))) (or (and .cse0 (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0))) (.cse5 (fp.div c_currentRoundingMode .cse1 ULTIMATE.start_SqrtR_~Input))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse1 .cse2)) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse4 (fp.add c_currentRoundingMode .cse5 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse3) .cse4) (fp.mul c_currentRoundingMode .cse3 .cse4))) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse1 .cse2)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 .cse5))))) .cse6) (and .cse0 (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse10 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse12 (fp.div c_currentRoundingMode .cse10 ULTIMATE.start_SqrtR_~Input))) (let ((.cse8 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse9 (fp.add c_currentRoundingMode .cse12 c_ULTIMATE.start_SqrtR_~xnp1~0))) (let ((.cse7 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse8) .cse9)) (.cse11 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (and (not (fp.gt .cse7 (fp.mul c_currentRoundingMode .cse8 .cse9))) (not (fp.lt .cse7 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse10 .cse11)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse10 .cse11)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse10)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 .cse12))))))) (= (_ bv0 32) c_ULTIMATE.start_SqrtR_~cond~0)) (and .cse0 (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse14 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse15 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0))) (.cse13 (fp.div c_currentRoundingMode .cse14 ULTIMATE.start_SqrtR_~Input))) (and (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode .cse13 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse14 .cse15)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse14 .cse15)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse14)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 .cse13))))) .cse6))) is different from false [2020-11-30 00:00:13,710 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse5 (fp.div c_currentRoundingMode .cse3 ULTIMATE.start_SqrtR_~Input))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode .cse5 c_ULTIMATE.start_SqrtR_~xnp1~0))) (let ((.cse0 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2)) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (and (not (fp.gt .cse0 (fp.mul c_currentRoundingMode .cse1 .cse2))) (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse3 .cse4)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse3 .cse4)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse3)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 .cse5)))))))) is different from false [2020-11-30 00:00:16,611 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse5 (fp.add c_currentRoundingMode .cse1 .cse1))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0))) (.cse3 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse4) .cse5))) (and (= |c_ULTIMATE.start_SqrtR_#res| (fp.div c_currentRoundingMode .cse0 .cse1)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 .cse2)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse0 .cse2)) (not (fp.lt .cse3 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.gt .cse3 (fp.mul c_currentRoundingMode .cse4 .cse5))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0))))))))) is different from false [2020-11-30 00:00:16,624 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 00:00:22,571 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 00:00:42,586 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (or (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse4 (fp.add roundNearestTiesToEven .cse5 .cse5))) (let ((.cse2 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse3) .cse4)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse0 .cse1)) (not (fp.lt .cse2 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (not (fp.gt .cse2 (fp.mul roundNearestTiesToEven .cse3 .cse4))) (not (fp.leq (fp.div roundNearestTiesToEven .cse0 .cse5) ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse0 .cse1)))))))) .cse6) (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse7 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse10 (fp.div roundNearestTiesToEven .cse7 ULTIMATE.start_SqrtR_~Input))) (let ((.cse11 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse12 (fp.add roundNearestTiesToEven .cse10 .cse10))) (let ((.cse9 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse11) .cse12)) (.cse8 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse7 .cse8)) (not (fp.lt .cse9 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.geq (fp.div roundNearestTiesToEven .cse7 .cse10) ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse7)) (not (fp.gt .cse9 (fp.mul roundNearestTiesToEven .cse11 .cse12))) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse7 .cse8)))))))) .cse6) (and (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse13 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse19 (fp.div roundNearestTiesToEven .cse13 ULTIMATE.start_SqrtR_~Input))) (let ((.cse17 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse18 (fp.add roundNearestTiesToEven .cse19 .cse19))) (let ((.cse16 (fp.div roundNearestTiesToEven .cse13 .cse19)) (.cse15 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse17) .cse18)) (.cse14 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse13 .cse14)) (not (fp.lt .cse15 ULTIMATE.start_SqrtR_~linf~0)) (fp.geq .cse16 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0))) (fp.leq .cse16 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse13)) (not (fp.gt .cse15 (fp.mul roundNearestTiesToEven .cse17 .cse18))) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse13 .cse14))))))))))) is different from false [2020-11-30 00:00:57,936 WARN L838 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse4 (fp.add roundNearestTiesToEven .cse5 .cse5))) (let ((.cse2 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse3) .cse4)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse0 .cse1)) (not (fp.lt .cse2 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (not (fp.gt .cse2 (fp.mul roundNearestTiesToEven .cse3 .cse4))) (not (fp.leq (fp.div roundNearestTiesToEven .cse0 .cse5) ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse0 .cse1)))))))) (exists ((v_prenex_1 (_ FloatingPoint 11 53)) (v_prenex_2 (_ FloatingPoint 11 53))) (let ((.cse9 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse10 (fp.div roundNearestTiesToEven .cse9 v_prenex_1))) (let ((.cse7 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse8 (fp.add roundNearestTiesToEven .cse10 .cse10))) (let ((.cse11 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0))) (.cse6 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse7) .cse8))) (and (not (fp.gt .cse6 (fp.mul roundNearestTiesToEven .cse7 .cse8))) (not (fp.leq v_prenex_1 .cse9)) (not (fp.geq (fp.div roundNearestTiesToEven .cse9 .cse10) ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (fp.geq v_prenex_1 (fp.sub roundNearestTiesToEven .cse9 .cse11)) (fp.leq v_prenex_1 (fp.add roundNearestTiesToEven .cse9 .cse11)) (not (fp.lt .cse6 v_prenex_2))))))))) is different from false [2020-11-30 00:01:00,669 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse4 (fp.add roundNearestTiesToEven .cse5 .cse5))) (let ((.cse2 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse3) .cse4)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse0 .cse1)) (not (fp.lt .cse2 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (not (fp.gt .cse2 (fp.mul roundNearestTiesToEven .cse3 .cse4))) (not (fp.leq (fp.div roundNearestTiesToEven .cse0 .cse5) ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse0 .cse1)))))))) (exists ((v_prenex_1 (_ FloatingPoint 11 53)) (v_prenex_2 (_ FloatingPoint 11 53))) (let ((.cse9 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse10 (fp.div roundNearestTiesToEven .cse9 v_prenex_1))) (let ((.cse7 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse8 (fp.add roundNearestTiesToEven .cse10 .cse10))) (let ((.cse11 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0))) (.cse6 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse7) .cse8))) (and (not (fp.gt .cse6 (fp.mul roundNearestTiesToEven .cse7 .cse8))) (not (fp.leq v_prenex_1 .cse9)) (not (fp.geq (fp.div roundNearestTiesToEven .cse9 .cse10) ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (fp.geq v_prenex_1 (fp.sub roundNearestTiesToEven .cse9 .cse11)) (fp.leq v_prenex_1 (fp.add roundNearestTiesToEven .cse9 .cse11)) (not (fp.lt .cse6 v_prenex_2))))))))) is different from true [2020-11-30 00:01:00,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:01:00,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:01:03,383 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))))) is different from false [2020-11-30 00:01:07,410 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))))) (not (= (_ bv0 32) c_ULTIMATE.start_SqrtR_~cond~0))) is different from false [2020-11-30 00:01:09,850 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))))) (not (= (_ bv0 32) c_ULTIMATE.start_SqrtR_~cond~0))) is different from true [2020-11-30 00:01:12,496 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_ULTIMATE.start_SqrtR_~linf~0_7 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_7))) (.cse1 (let ((.cse3 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse3) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse3)))) (.cse2 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0))) (and (or .cse0 .cse1 (fp.leq .cse2 ((_ to_fp 11 53) c_currentRoundingMode 5.0))) (or .cse0 .cse1 (fp.geq .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0)))))) is different from false [2020-11-30 00:01:15,038 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_ULTIMATE.start_SqrtR_~linf~0_7 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_7))) (.cse1 (let ((.cse3 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse3) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse3)))) (.cse2 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0))) (and (or .cse0 .cse1 (fp.leq .cse2 ((_ to_fp 11 53) c_currentRoundingMode 5.0))) (or .cse0 .cse1 (fp.geq .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0)))))) is different from true [2020-11-30 00:01:18,070 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse7 (fp.div c_currentRoundingMode .cse5 c_ULTIMATE.start_SqrtR_~Input))) (let ((.cse3 (fp.div c_currentRoundingMode .cse5 .cse7)) (.cse0 (let ((.cse6 (fp.add c_currentRoundingMode .cse7 .cse7))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse6) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse6)))) (.cse2 (fp.leq c_ULTIMATE.start_SqrtR_~Input .cse5))) (and (or .cse0 (forall ((v_prenex_3 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~Input))) (fp.add c_currentRoundingMode .cse1 .cse1))) v_prenex_3)) .cse2 (fp.leq .cse3 ((_ to_fp 11 53) c_currentRoundingMode 5.0))) (or (fp.geq .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_7 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse4 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~Input))) (fp.add c_currentRoundingMode .cse4 .cse4))) v_ULTIMATE.start_SqrtR_~linf~0_7)) .cse0 .cse2))))) is different from false [2020-11-30 00:01:20,963 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse7 (fp.div c_currentRoundingMode .cse5 c_ULTIMATE.start_SqrtR_~Input))) (let ((.cse3 (fp.div c_currentRoundingMode .cse5 .cse7)) (.cse0 (let ((.cse6 (fp.add c_currentRoundingMode .cse7 .cse7))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse6) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse6)))) (.cse2 (fp.leq c_ULTIMATE.start_SqrtR_~Input .cse5))) (and (or .cse0 (forall ((v_prenex_3 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~Input))) (fp.add c_currentRoundingMode .cse1 .cse1))) v_prenex_3)) .cse2 (fp.leq .cse3 ((_ to_fp 11 53) c_currentRoundingMode 5.0))) (or (fp.geq .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_7 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse4 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~Input))) (fp.add c_currentRoundingMode .cse4 .cse4))) v_ULTIMATE.start_SqrtR_~linf~0_7)) .cse0 .cse2))))) is different from true [2020-11-30 00:01:22,680 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-30 00:01:22,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786362476] [2020-11-30 00:01:22,682 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2020-11-30 00:01:22,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [800110156] [2020-11-30 00:01:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 00:01:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:01:28,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 00:01:28,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:01:28,851 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:01:28,855 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken [2020-11-30 00:01:28,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813393891] [2020-11-30 00:01:28,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22c15d0b-a60e-4c00-bc96-4f67642b511f/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:02:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:03,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-30 00:02:03,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:02:03,525 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@7862987d [2020-11-30 00:02:03,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:02:03,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-11-30 00:02:03,526 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-11-30 00:02:03,526 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:02:04,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:02:04,152 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-30 00:02:04,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:02:04 BoogieIcfgContainer [2020-11-30 00:02:04,153 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:02:04,154 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:02:04,154 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:02:04,154 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:02:04,155 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:59:11" (3/4) ... [2020-11-30 00:02:04,159 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:02:04,159 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:02:04,161 INFO L168 Benchmark]: Toolchain (without parser) took 183293.10 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 56.0 MB in the beginning and 40.0 MB in the end (delta: 16.0 MB). Peak memory consumption was 30.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:02:04,162 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 71.3 MB. Free memory was 53.2 MB in the beginning and 53.1 MB in the end (delta: 55.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:02:04,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.72 ms. Allocated memory is still 71.3 MB. Free memory was 55.6 MB in the beginning and 44.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:02:04,164 INFO L168 Benchmark]: Boogie Procedure Inliner took 112.34 ms. Allocated memory is still 71.3 MB. Free memory was 44.8 MB in the beginning and 54.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:02:04,164 INFO L168 Benchmark]: Boogie Preprocessor took 61.44 ms. Allocated memory is still 71.3 MB. Free memory was 54.6 MB in the beginning and 53.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:02:04,165 INFO L168 Benchmark]: RCFGBuilder took 10067.22 ms. Allocated memory is still 71.3 MB. Free memory was 53.1 MB in the beginning and 38.9 MB in the end (delta: 14.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:02:04,166 INFO L168 Benchmark]: TraceAbstraction took 172654.48 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 38.5 MB in the beginning and 40.0 MB in the end (delta: -1.5 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:02:04,167 INFO L168 Benchmark]: Witness Printer took 5.21 ms. Allocated memory is still 86.0 MB. Free memory is still 40.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:02:04,171 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 71.3 MB. Free memory was 53.2 MB in the beginning and 53.1 MB in the end (delta: 55.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 374.72 ms. Allocated memory is still 71.3 MB. Free memory was 55.6 MB in the beginning and 44.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 112.34 ms. Allocated memory is still 71.3 MB. Free memory was 44.8 MB in the beginning and 54.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.44 ms. Allocated memory is still 71.3 MB. Free memory was 54.6 MB in the beginning and 53.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 10067.22 ms. Allocated memory is still 71.3 MB. Free memory was 53.1 MB in the beginning and 38.9 MB in the end (delta: 14.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 172654.48 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 38.5 MB in the beginning and 40.0 MB in the end (delta: -1.5 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.21 ms. Allocated memory is still 86.0 MB. Free memory is still 40.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] double _EPS = 1e-6; [L49] double d, 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: 172.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 27.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 2 SDslu, 23 SDs, 0 SdLazy, 22 SolverSat, 0 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 23.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 16.7s 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 4.4s SatisfiabilityAnalysisTime, 14.9s 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...