./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD --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 6126c292b79b2663ac597229a34ee56f0c149d9383459c587f75b8bcd2abff05 ............................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD --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 6126c292b79b2663ac597229a34ee56f0c149d9383459c587f75b8bcd2abff05 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:43:31,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:43:31,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:43:31,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:43:31,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:43:31,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:43:31,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:43:31,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:43:31,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:43:31,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:43:31,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:43:31,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:43:31,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:43:31,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:43:31,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:43:31,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:43:31,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:43:31,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:43:31,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:43:31,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:43:31,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:43:31,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:43:31,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:43:31,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:43:31,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:43:31,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:43:31,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:43:31,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:43:31,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:43:31,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:43:31,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:43:31,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:43:31,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:43:31,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:43:31,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:43:31,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:43:31,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:43:31,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:43:31,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:43:31,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:43:31,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:43:31,625 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:43:31,658 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:43:31,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:43:31,659 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:43:31,659 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:43:31,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:43:31,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:43:31,661 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:43:31,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:43:31,662 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:43:31,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:43:31,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:43:31,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:43:31,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:43:31,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:43:31,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:43:31,664 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:43:31,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:43:31,664 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:43:31,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:43:31,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:43:31,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:43:31,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:43:31,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:43:31,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:43:31,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:43:31,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:43:31,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:43:31,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:43:31,667 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:43:31,668 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:43:31,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:43:31,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:43:31,669 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_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6126c292b79b2663ac597229a34ee56f0c149d9383459c587f75b8bcd2abff05 [2021-10-28 23:43:32,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:43:32,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:43:32,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:43:32,138 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:43:32,139 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:43:32,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2021-10-28 23:43:32,250 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/data/c77992406/f505aa853fbf47ebb522ad026bcf634e/FLAGd7d63fd97 [2021-10-28 23:43:32,794 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:43:32,795 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2021-10-28 23:43:32,806 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/data/c77992406/f505aa853fbf47ebb522ad026bcf634e/FLAGd7d63fd97 [2021-10-28 23:43:33,166 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/data/c77992406/f505aa853fbf47ebb522ad026bcf634e [2021-10-28 23:43:33,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:43:33,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:43:33,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:43:33,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:43:33,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:43:33,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:43:33" (1/1) ... [2021-10-28 23:43:33,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@309fb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:33, skipping insertion in model container [2021-10-28 23:43:33,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:43:33" (1/1) ... [2021-10-28 23:43:33,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:43:33,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:43:33,420 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c[557,570] [2021-10-28 23:43:33,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:43:33,465 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:43:33,479 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c[557,570] [2021-10-28 23:43:33,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:43:33,508 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:43:33,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:33 WrapperNode [2021-10-28 23:43:33,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:43:33,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:43:33,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:43:33,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:43:33,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:33" (1/1) ... [2021-10-28 23:43:33,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:33" (1/1) ... [2021-10-28 23:43:33,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:43:33,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:43:33,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:43:33,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:43:33,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:33" (1/1) ... [2021-10-28 23:43:33,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:33" (1/1) ... [2021-10-28 23:43:33,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:33" (1/1) ... [2021-10-28 23:43:33,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:33" (1/1) ... [2021-10-28 23:43:33,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:33" (1/1) ... [2021-10-28 23:43:33,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:33" (1/1) ... [2021-10-28 23:43:33,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:33" (1/1) ... [2021-10-28 23:43:33,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:43:33,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:43:33,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:43:33,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:43:33,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:33" (1/1) ... [2021-10-28 23:43:33,603 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:43:33,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:43:33,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:43:33,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:43:33,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:43:33,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:43:33,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:43:33,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:43:34,037 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:43:34,037 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-28 23:43:34,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:43:34 BoogieIcfgContainer [2021-10-28 23:43:34,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:43:34,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:43:34,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:43:34,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:43:34,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:43:33" (1/3) ... [2021-10-28 23:43:34,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc49ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:43:34, skipping insertion in model container [2021-10-28 23:43:34,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:33" (2/3) ... [2021-10-28 23:43:34,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc49ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:43:34, skipping insertion in model container [2021-10-28 23:43:34,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:43:34" (3/3) ... [2021-10-28 23:43:34,052 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Newton_pseudoconstant.c [2021-10-28 23:43:34,059 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:43:34,059 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:43:34,121 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:43:34,141 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:43:34,142 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:43:34,186 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:43:34,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:43:34,193 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:43:34,194 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:43:34,195 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:43:34,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:34,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2021-10-28 23:43:34,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:43:34,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013926136] [2021-10-28 23:43:34,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:34,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:43:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:43:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:43:34,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:43:34,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013926136] [2021-10-28 23:43:34,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013926136] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:43:34,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:43:34,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:43:34,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761152006] [2021-10-28 23:43:34,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:43:34,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:43:34,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:43:34,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:43:34,461 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:43:34,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:43:34,482 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2021-10-28 23:43:34,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:43:34,484 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-28 23:43:34,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:43:34,496 INFO L225 Difference]: With dead ends: 34 [2021-10-28 23:43:34,496 INFO L226 Difference]: Without dead ends: 14 [2021-10-28 23:43:34,501 INFO L786 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 [2021-10-28 23:43:34,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-28 23:43:34,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-28 23:43:34,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:43:34,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-28 23:43:34,542 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-10-28 23:43:34,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:43:34,544 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-28 23:43:34,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:43:34,545 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-28 23:43:34,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:43:34,546 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:43:34,546 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:43:34,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:43:34,548 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:43:34,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:34,554 INFO L85 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2021-10-28 23:43:34,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:43:34,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706580069] [2021-10-28 23:43:34,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:34,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:43:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:43:34,640 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:43:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:43:34,706 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:43:34,712 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:43:34,714 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:43:34,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:43:34,722 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 23:43:34,724 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:43:34,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:43:34 BoogieIcfgContainer [2021-10-28 23:43:34,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:43:34,758 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:43:34,759 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:43:34,759 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:43:34,760 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:43:34" (3/4) ... [2021-10-28 23:43:34,763 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:43:34,764 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:43:34,766 INFO L168 Benchmark]: Toolchain (without parser) took 1593.32 ms. Allocated memory is still 111.1 MB. Free memory was 74.7 MB in the beginning and 47.1 MB in the end (delta: 27.6 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:43:34,767 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 111.1 MB. Free memory was 84.4 MB in the beginning and 84.4 MB in the end (delta: 27.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:43:34,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.47 ms. Allocated memory is still 111.1 MB. Free memory was 74.5 MB in the beginning and 84.3 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:43:34,769 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.22 ms. Allocated memory is still 111.1 MB. Free memory was 84.3 MB in the beginning and 83.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:43:34,770 INFO L168 Benchmark]: Boogie Preprocessor took 31.42 ms. Allocated memory is still 111.1 MB. Free memory was 83.1 MB in the beginning and 81.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:43:34,771 INFO L168 Benchmark]: RCFGBuilder took 449.45 ms. Allocated memory is still 111.1 MB. Free memory was 81.6 MB in the beginning and 71.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:43:34,772 INFO L168 Benchmark]: TraceAbstraction took 715.47 ms. Allocated memory is still 111.1 MB. Free memory was 71.2 MB in the beginning and 47.6 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:43:34,773 INFO L168 Benchmark]: Witness Printer took 5.48 ms. Allocated memory is still 111.1 MB. Free memory was 47.6 MB in the beginning and 47.1 MB in the end (delta: 508.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:43:34,778 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 111.1 MB. Free memory was 84.4 MB in the beginning and 84.4 MB in the end (delta: 27.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 332.47 ms. Allocated memory is still 111.1 MB. Free memory was 74.5 MB in the beginning and 84.3 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.22 ms. Allocated memory is still 111.1 MB. Free memory was 84.3 MB in the beginning and 83.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.42 ms. Allocated memory is still 111.1 MB. Free memory was 83.1 MB in the beginning and 81.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 449.45 ms. Allocated memory is still 111.1 MB. Free memory was 81.6 MB in the beginning and 71.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 715.47 ms. Allocated memory is still 111.1 MB. Free memory was 71.2 MB in the beginning and 47.6 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.48 ms. Allocated memory is still 111.1 MB. Free memory was 47.6 MB in the beginning and 47.1 MB in the end (delta: 508.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 52, overapproximation of someUnaryDOUBLEoperation at line 25, overapproximation of someBinaryArithmeticDOUBLEoperation at line 37. Possible FailurePath: [L15] double _EPS = 1e-6; VAL [_EPS=1/1000000] [L42] double d, dd, r; [L43] double epsilon = 1e-8; [L45] d = 1. VAL [_EPS=1/1000000] [L45] COND TRUE d <= 20. [L47] dd = __VERIFIER_nondet_double() [L11] COND FALSE !(!cond) VAL [_EPS=1/1000000] [L19] double xn, xnp1, residu, lsup, linf; [L20] int i, cond; VAL [_EPS=1/1000000] [L21] COND TRUE Input <= 1.0 [L21] xn = 1.0 VAL [_EPS=1/1000000] [L22] xnp1 = xn [L23] residu = 2.0*_EPS*(xn+xnp1) [L24] lsup = _EPS * (xn+xnp1) [L25] linf = -lsup [L26] cond = ((residu > lsup) || (residu < linf)) [L27] i = 0 VAL [_EPS=1/1000000] [L28] COND FALSE !(\read(cond)) VAL [_EPS=1/1000000] [L37] return 1.0 / xnp1; VAL [_EPS=1/1000000] [L50] r = SqrtR(dd) [L13] COND TRUE !(cond) VAL [_EPS=1/1000000] [L13] reach_error() VAL [_EPS=1/1000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 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=18occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 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 [2021-10-28 23:43:34,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:43:37,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:43:37,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:43:37,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:43:37,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:43:37,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:43:37,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:43:37,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:43:37,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:43:37,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:43:37,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:43:38,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:43:38,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:43:38,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:43:38,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:43:38,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:43:38,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:43:38,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:43:38,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:43:38,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:43:38,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:43:38,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:43:38,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:43:38,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:43:38,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:43:38,047 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:43:38,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:43:38,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:43:38,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:43:38,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:43:38,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:43:38,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:43:38,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:43:38,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:43:38,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:43:38,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:43:38,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:43:38,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:43:38,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:43:38,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:43:38,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:43:38,086 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 23:43:38,119 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:43:38,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:43:38,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:43:38,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:43:38,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:43:38,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:43:38,123 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:43:38,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:43:38,123 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:43:38,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:43:38,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:43:38,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:43:38,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:43:38,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:43:38,125 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:43:38,125 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:43:38,125 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:43:38,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:43:38,126 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:43:38,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:43:38,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:43:38,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:43:38,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:43:38,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:43:38,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:43:38,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:43:38,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:43:38,128 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:43:38,128 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:43:38,128 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:43:38,129 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:43:38,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:43:38,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:43:38,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:43:38,130 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_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6126c292b79b2663ac597229a34ee56f0c149d9383459c587f75b8bcd2abff05 [2021-10-28 23:43:38,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:43:38,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:43:38,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:43:38,674 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:43:38,675 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:43:38,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2021-10-28 23:43:38,757 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/data/5667786d4/949a1e4507da47b7a9336e39c6466450/FLAGb359b9e54 [2021-10-28 23:43:39,412 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:43:39,412 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2021-10-28 23:43:39,425 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/data/5667786d4/949a1e4507da47b7a9336e39c6466450/FLAGb359b9e54 [2021-10-28 23:43:39,733 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/data/5667786d4/949a1e4507da47b7a9336e39c6466450 [2021-10-28 23:43:39,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:43:39,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:43:39,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:43:39,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:43:39,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:43:39,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:43:39" (1/1) ... [2021-10-28 23:43:39,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34fcc4b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:39, skipping insertion in model container [2021-10-28 23:43:39,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:43:39" (1/1) ... [2021-10-28 23:43:39,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:43:39,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:43:39,941 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c[557,570] [2021-10-28 23:43:39,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:43:39,986 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:43:40,001 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c[557,570] [2021-10-28 23:43:40,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:43:40,033 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:43:40,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:40 WrapperNode [2021-10-28 23:43:40,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:43:40,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:43:40,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:43:40,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:43:40,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:40" (1/1) ... [2021-10-28 23:43:40,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:40" (1/1) ... [2021-10-28 23:43:40,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:43:40,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:43:40,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:43:40,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:43:40,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:40" (1/1) ... [2021-10-28 23:43:40,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:40" (1/1) ... [2021-10-28 23:43:40,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:40" (1/1) ... [2021-10-28 23:43:40,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:40" (1/1) ... [2021-10-28 23:43:40,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:40" (1/1) ... [2021-10-28 23:43:40,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:40" (1/1) ... [2021-10-28 23:43:40,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:40" (1/1) ... [2021-10-28 23:43:40,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:43:40,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:43:40,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:43:40,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:43:40,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:40" (1/1) ... [2021-10-28 23:43:40,242 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:43:40,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:43:40,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:43:40,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:43:40,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:43:40,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:43:40,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:43:40,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:43:49,441 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:43:49,442 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-28 23:43:49,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:43:49 BoogieIcfgContainer [2021-10-28 23:43:49,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:43:49,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:43:49,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:43:49,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:43:49,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:43:39" (1/3) ... [2021-10-28 23:43:49,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15fe81e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:43:49, skipping insertion in model container [2021-10-28 23:43:49,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:40" (2/3) ... [2021-10-28 23:43:49,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15fe81e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:43:49, skipping insertion in model container [2021-10-28 23:43:49,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:43:49" (3/3) ... [2021-10-28 23:43:49,455 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Newton_pseudoconstant.c [2021-10-28 23:43:49,462 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:43:49,462 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:43:49,525 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:43:49,533 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:43:49,534 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:43:49,551 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:43:49,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:43:49,558 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:43:49,559 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:43:49,559 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:43:49,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:49,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2021-10-28 23:43:49,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:43:49,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760069733] [2021-10-28 23:43:49,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:49,585 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:43:49,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:43:49,593 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:43:49,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:43:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:43:51,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 23:43:51,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:43:51,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:43:51,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:43:51,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:43:51,783 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:43:51,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760069733] [2021-10-28 23:43:51,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760069733] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:43:51,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:43:51,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:43:51,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443968022] [2021-10-28 23:43:51,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:43:51,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:43:51,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:43:51,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:43:51,812 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:43:51,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:43:51,830 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2021-10-28 23:43:51,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:43:51,832 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-28 23:43:51,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:43:51,843 INFO L225 Difference]: With dead ends: 34 [2021-10-28 23:43:51,843 INFO L226 Difference]: Without dead ends: 14 [2021-10-28 23:43:51,847 INFO L786 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 [2021-10-28 23:43:51,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-28 23:43:51,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-28 23:43:51,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:43:51,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-28 23:43:51,887 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-10-28 23:43:51,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:43:51,888 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-28 23:43:51,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:43:51,889 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-28 23:43:51,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:43:51,890 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:43:51,890 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:43:51,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:43:52,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:43:52,117 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:43:52,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:52,119 INFO L85 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2021-10-28 23:43:52,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:43:52,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857180387] [2021-10-28 23:43:52,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:52,121 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:43:52,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:43:52,124 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:43:52,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:43:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:43:54,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:43:54,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:43:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:43:54,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:44:05,736 WARN L838 $PredicateComparison]: unable to prove that (or (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))) (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))) is different from false [2021-10-28 23:44:07,810 WARN L860 $PredicateComparison]: unable to prove that (or (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))) (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))) is different from true [2021-10-28 23:44:33,313 WARN L207 SmtUtils]: Spent 12.98 s on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2021-10-28 23:44:41,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:41,810 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:44:41,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857180387] [2021-10-28 23:44:41,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857180387] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:41,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:41,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-28 23:44:41,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675764136] [2021-10-28 23:44:41,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:44:41,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:44:41,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:44:41,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=27, Unknown=2, NotChecked=10, Total=56 [2021-10-28 23:44:41,816 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:45,171 WARN L860 $PredicateComparison]: unable to prove that (and (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (or (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))) (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))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_SqrtR_~xn~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-10-28 23:45:10,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:45:10,980 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2021-10-28 23:45:11,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:45:11,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-28 23:45:11,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:45:11,063 INFO L225 Difference]: With dead ends: 32 [2021-10-28 23:45:11,064 INFO L226 Difference]: Without dead ends: 20 [2021-10-28 23:45:11,065 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 26.4s TimeCoverageRelationStatistics Valid=19, Invalid=28, Unknown=3, NotChecked=22, Total=72 [2021-10-28 23:45:11,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-28 23:45:11,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-28 23:45:11,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:45:11,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-10-28 23:45:11,071 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2021-10-28 23:45:11,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:45:11,072 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-10-28 23:45:11,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:45:11,072 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-10-28 23:45:11,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:45:11,073 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:45:11,073 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:45:11,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:45:11,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:45:11,274 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:45:11,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:45:11,275 INFO L85 PathProgramCache]: Analyzing trace with hash -274400360, now seen corresponding path program 1 times [2021-10-28 23:45:11,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:45:11,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267873886] [2021-10-28 23:45:11,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:45:11,277 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:45:11,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:45:11,280 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:45:11,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:45:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:45:15,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 23:45:15,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:45:27,741 WARN L207 SmtUtils]: Spent 5.01 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-28 23:45:33,780 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (= (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xn~0)))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-28 23:46:02,811 WARN L207 SmtUtils]: Spent 5.13 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 23:46:12,505 WARN L207 SmtUtils]: Spent 5.12 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-28 23:46:14,793 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2) (fp.mul c_currentRoundingMode .cse1 .cse2))))) (or (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (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 c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (not .cse0) (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32))) (and (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv1 32)) (or (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (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 c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0)) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse3 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse3)))))) is different from false [2021-10-28 23:46:16,878 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2) (fp.mul c_currentRoundingMode .cse1 .cse2))))) (or (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (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 c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (not .cse0) (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32))) (and (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv1 32)) (or (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (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 c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0)) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse3 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse3)))))) is different from true [2021-10-28 23:46:34,515 WARN L207 SmtUtils]: Spent 5.14 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 23:46:46,283 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (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 c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse1 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse0) .cse1) (fp.mul c_currentRoundingMode .cse0 .cse1)))) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse2 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse2)))))) is different from false [2021-10-28 23:46:48,354 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (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 c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse1 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse0) .cse1) (fp.mul c_currentRoundingMode .cse0 .cse1)))) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse2 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse2)))))) is different from true [2021-10-28 23:46:54,251 WARN L207 SmtUtils]: Spent 5.87 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:46:59,939 WARN L207 SmtUtils]: Spent 5.69 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 23:47:05,715 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:47:11,608 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:47:17,447 WARN L207 SmtUtils]: Spent 5.84 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-28 23:47:22,756 WARN L207 SmtUtils]: Spent 5.31 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 23:47:25,205 WARN L838 $PredicateComparison]: unable to prove that (and (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 ((.cse4 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse3 (fp.add c_currentRoundingMode .cse4 .cse4))) (let ((.cse1 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse2) .cse3))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (not (fp.gt .cse1 (fp.mul c_currentRoundingMode .cse2 .cse3))) (not (fp.lt .cse1 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (= |c_ULTIMATE.start_SqrtR_#res| (fp.div c_currentRoundingMode .cse0 .cse4)))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-28 23:47:31,057 WARN L207 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:47:39,216 WARN L207 SmtUtils]: Spent 5.74 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:47:44,995 WARN L207 SmtUtils]: Spent 5.78 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:47:50,729 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 23:47:56,440 WARN L207 SmtUtils]: Spent 5.71 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:48:02,192 WARN L207 SmtUtils]: Spent 5.75 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-28 23:48:07,930 WARN L207 SmtUtils]: Spent 5.74 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-28 23:48:13,680 WARN L207 SmtUtils]: Spent 5.75 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-28 23:48:21,924 WARN L207 SmtUtils]: Spent 5.79 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:48:30,160 WARN L207 SmtUtils]: Spent 5.81 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:48:35,968 WARN L207 SmtUtils]: Spent 5.81 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:48:41,771 WARN L207 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 23:48:47,553 WARN L207 SmtUtils]: Spent 5.78 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:48:52,870 WARN L207 SmtUtils]: Spent 5.32 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 23:48:58,640 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-28 23:49:06,825 WARN L207 SmtUtils]: Spent 5.75 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:49:12,593 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:49:18,336 WARN L207 SmtUtils]: Spent 5.74 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 23:49:24,052 WARN L207 SmtUtils]: Spent 5.72 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:49:29,334 WARN L207 SmtUtils]: Spent 5.28 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 23:49:35,170 WARN L207 SmtUtils]: Spent 5.84 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-28 23:49:40,950 WARN L207 SmtUtils]: Spent 5.78 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:49:46,711 WARN L207 SmtUtils]: Spent 5.76 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 23:49:52,456 WARN L207 SmtUtils]: Spent 5.74 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:49:58,230 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-28 23:50:04,050 WARN L207 SmtUtils]: Spent 5.82 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 23:50:09,773 WARN L207 SmtUtils]: Spent 5.72 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 23:50:15,569 WARN L207 SmtUtils]: Spent 5.76 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:50:21,362 WARN L207 SmtUtils]: Spent 5.79 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 23:50:27,160 WARN L207 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:50:33,057 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-28 23:50:38,965 WARN L207 SmtUtils]: Spent 5.91 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 23:50:44,955 WARN L207 SmtUtils]: Spent 5.99 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 23:50:50,861 WARN L207 SmtUtils]: Spent 5.90 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-28 23:50:56,747 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-28 23:51:02,606 WARN L207 SmtUtils]: Spent 5.86 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-28 23:51:08,457 WARN L207 SmtUtils]: Spent 5.85 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-28 23:51:10,912 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse7 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse7 .cse7))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (let ((.cse6 (fp.div roundNearestTiesToEven .cse1 .cse7))) (let ((.cse4 (fp.geq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (.cse5 (fp.leq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse4) (not .cse5))) (and .cse4 .cse5 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)))))))) is different from false [2021-10-28 23:51:13,190 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse7 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse7 .cse7))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (let ((.cse6 (fp.div roundNearestTiesToEven .cse1 .cse7))) (let ((.cse4 (fp.geq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (.cse5 (fp.leq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse4) (not .cse5))) (and .cse4 .cse5 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)))))))) is different from true [2021-10-28 23:51:21,433 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:51:29,700 WARN L207 SmtUtils]: Spent 5.83 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:51:35,585 WARN L207 SmtUtils]: Spent 5.88 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:51:41,440 WARN L207 SmtUtils]: Spent 5.84 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 23:51:47,347 WARN L207 SmtUtils]: Spent 5.91 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:51:52,795 WARN L207 SmtUtils]: Spent 5.45 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 23:51:58,791 WARN L207 SmtUtils]: Spent 5.99 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-28 23:52:07,212 WARN L207 SmtUtils]: Spent 5.96 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:52:13,177 WARN L207 SmtUtils]: Spent 5.96 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:52:19,113 WARN L207 SmtUtils]: Spent 5.94 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 23:52:25,030 WARN L207 SmtUtils]: Spent 5.90 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:52:30,489 WARN L207 SmtUtils]: Spent 5.46 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 23:52:36,489 WARN L207 SmtUtils]: Spent 6.00 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-28 23:52:42,423 WARN L207 SmtUtils]: Spent 5.93 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:52:48,228 WARN L207 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 23:52:54,017 WARN L207 SmtUtils]: Spent 5.79 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:52:59,853 WARN L207 SmtUtils]: Spent 5.84 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-28 23:53:05,764 WARN L207 SmtUtils]: Spent 5.91 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 23:53:11,639 WARN L207 SmtUtils]: Spent 5.87 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 23:53:14,077 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse5 .cse5))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)) (let ((.cse4 (fp.div roundNearestTiesToEven .cse1 .cse5))) (or (not (fp.geq .cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (not (fp.leq .cse4 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))))))))))) is different from false [2021-10-28 23:53:16,349 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse5 .cse5))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)) (let ((.cse4 (fp.div roundNearestTiesToEven .cse1 .cse5))) (or (not (fp.geq .cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (not (fp.leq .cse4 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))))))))))) is different from true [2021-10-28 23:53:16,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:53:16,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:53:28,750 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.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))) is different from false [2021-10-28 23:53:30,938 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))) is different from true [2021-10-28 23:53:47,706 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.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))) (not (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32)))) is different from false [2021-10-28 23:53:49,902 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.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))) (not (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32)))) is different from true [2021-10-28 23:53:59,930 WARN L207 SmtUtils]: Spent 5.02 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 23:54:04,981 WARN L207 SmtUtils]: Spent 5.05 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 23:54:10,029 WARN L207 SmtUtils]: Spent 5.05 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 23:54:12,302 WARN L838 $PredicateComparison]: unable to prove that (or (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))) (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0))) (and (fp.geq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))) (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) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_7))) is different from false [2021-10-28 23:54:14,571 WARN L860 $PredicateComparison]: unable to prove that (or (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))) (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0))) (and (fp.geq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))) (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) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_7))) is different from true [2021-10-28 23:54:20,592 WARN L207 SmtUtils]: Spent 5.99 s on a formula simplification that was a NOOP. DAG size: 13 [2021-10-28 23:54:26,493 WARN L207 SmtUtils]: Spent 5.90 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-28 23:54:32,468 WARN L207 SmtUtils]: Spent 5.97 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-28 23:54:38,503 WARN L207 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 5 [2021-10-28 23:54:41,487 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-28 23:54:41,488 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:54:41,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267873886] [2021-10-28 23:54:41,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-28 23:54:41,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [921494100] [2021-10-28 23:54:41,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:41,489 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-28 23:54:41,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/cvc4 [2021-10-28 23:54:41,495 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-28 23:54:41,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-28 23:54:41,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-28 23:54:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:46,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 23:54:46,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:46,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-28 23:54:46,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452065903] [2021-10-28 23:54:46,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:46,459 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:54:46,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:46,463 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:54:46,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 23:55:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:54,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 23:55:54,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:54,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-28 23:55:54,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:55:54,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-28 23:55:54,671 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-28 23:55:54,671 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-28 23:55:54,678 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:55:54,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:55,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:55,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:55,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3fa063-8331-4f34-881b-eebc731b74c7/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt [2021-10-28 23:55:55,283 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-28 23:55:55,286 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:55:55,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:55:55 BoogieIcfgContainer [2021-10-28 23:55:55,298 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:55:55,299 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:55:55,299 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:55:55,300 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:55:55,300 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:43:49" (3/4) ... [2021-10-28 23:55:55,303 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:55:55,304 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:55:55,305 INFO L168 Benchmark]: Toolchain (without parser) took 735566.42 ms. Allocated memory was 69.2 MB in the beginning and 90.2 MB in the end (delta: 21.0 MB). Free memory was 49.5 MB in the beginning and 59.0 MB in the end (delta: -9.5 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:55:55,305 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 69.2 MB. Free memory is still 50.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:55:55,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.50 ms. Allocated memory is still 69.2 MB. Free memory was 49.4 MB in the beginning and 38.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:55:55,307 INFO L168 Benchmark]: Boogie Procedure Inliner took 134.74 ms. Allocated memory is still 69.2 MB. Free memory was 38.4 MB in the beginning and 51.8 MB in the end (delta: -13.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:55:55,307 INFO L168 Benchmark]: Boogie Preprocessor took 60.13 ms. Allocated memory is still 69.2 MB. Free memory was 51.8 MB in the beginning and 50.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:55:55,308 INFO L168 Benchmark]: RCFGBuilder took 9213.11 ms. Allocated memory is still 69.2 MB. Free memory was 50.2 MB in the beginning and 39.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:55:55,308 INFO L168 Benchmark]: TraceAbstraction took 725851.71 ms. Allocated memory was 69.2 MB in the beginning and 90.2 MB in the end (delta: 21.0 MB). Free memory was 39.4 MB in the beginning and 59.5 MB in the end (delta: -20.1 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:55:55,309 INFO L168 Benchmark]: Witness Printer took 4.63 ms. Allocated memory is still 90.2 MB. Free memory was 59.5 MB in the beginning and 59.0 MB in the end (delta: 469.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:55:55,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 69.2 MB. Free memory is still 50.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 294.50 ms. Allocated memory is still 69.2 MB. Free memory was 49.4 MB in the beginning and 38.4 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 134.74 ms. Allocated memory is still 69.2 MB. Free memory was 38.4 MB in the beginning and 51.8 MB in the end (delta: -13.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.13 ms. Allocated memory is still 69.2 MB. Free memory was 51.8 MB in the beginning and 50.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 9213.11 ms. Allocated memory is still 69.2 MB. Free memory was 50.2 MB in the beginning and 39.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 725851.71 ms. Allocated memory was 69.2 MB in the beginning and 90.2 MB in the end (delta: 21.0 MB). Free memory was 39.4 MB in the beginning and 59.5 MB in the end (delta: -20.1 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * Witness Printer took 4.63 ms. Allocated memory is still 90.2 MB. Free memory was 59.5 MB in the beginning and 59.0 MB in the end (delta: 469.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L15] double _EPS = 1e-6; [L42] double d, dd, r; [L43] double epsilon = 1e-8; [L45] d = 1. [L45] COND TRUE d <= 20. [L47] dd = __VERIFIER_nondet_double() [L11] COND FALSE !(!cond) [L19] double xn, xnp1, residu, lsup, linf; [L20] int i, cond; [L21] COND FALSE !(Input <= 1.0) [L21] xn = 1.0/Input [L22] xnp1 = xn [L23] residu = 2.0*_EPS*(xn+xnp1) [L24] lsup = _EPS * (xn+xnp1) [L25] linf = -lsup [L26] cond = ((residu > lsup) || (residu < linf)) [L27] i = 0 [L28] COND FALSE !(\read(cond)) [L37] return 1.0 / xnp1; [L50] r = SqrtR(dd) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 725.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 29.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 1 SDslu, 29 SDs, 0 SdLazy, 21 SolverSat, 0 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 26.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 26.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, InterpolantAutomatonStates: 7, 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, 7.2s SatisfiabilityAnalysisTime, 614.6s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 55 ConstructedInterpolants, 7 QuantifiedInterpolants, 1043 SizeOfPredicates, 26 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...