./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be --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_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be --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-e943c26 [2021-10-21 19:05:39,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:05:39,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:05:39,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:05:39,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:05:39,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:05:39,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:05:39,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:05:39,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:05:39,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:05:39,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:05:39,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:05:39,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:05:39,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:05:39,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:05:39,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:05:39,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:05:39,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:05:39,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:05:39,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:05:39,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:05:39,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:05:39,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:05:39,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:05:39,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:05:39,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:05:39,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:05:39,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:05:39,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:05:39,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:05:39,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:05:39,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:05:39,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:05:39,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:05:39,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:05:39,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:05:39,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:05:39,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:05:39,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:05:39,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:05:39,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:05:39,781 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:05:39,805 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:05:39,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:05:39,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:05:39,806 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:05:39,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:05:39,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:05:39,807 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:05:39,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:05:39,808 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:05:39,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:05:39,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:05:39,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:05:39,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:05:39,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:05:39,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:05:39,810 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:05:39,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:05:39,810 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:05:39,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:05:39,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:05:39,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:05:39,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:05:39,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:05:39,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:05:39,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:05:39,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:05:39,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:05:39,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:05:39,813 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:05:39,813 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:05:39,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:05:39,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:05:39,814 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_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6126c292b79b2663ac597229a34ee56f0c149d9383459c587f75b8bcd2abff05 [2021-10-21 19:05:40,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:05:40,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:05:40,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:05:40,070 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:05:40,071 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:05:40,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2021-10-21 19:05:40,135 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/data/bdf60026b/4cb3928a458c4e4bb94d4b4dbb754bed/FLAG7a2a8df88 [2021-10-21 19:05:40,693 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:05:40,694 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2021-10-21 19:05:40,700 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/data/bdf60026b/4cb3928a458c4e4bb94d4b4dbb754bed/FLAG7a2a8df88 [2021-10-21 19:05:41,021 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/data/bdf60026b/4cb3928a458c4e4bb94d4b4dbb754bed [2021-10-21 19:05:41,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:05:41,024 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:05:41,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:05:41,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:05:41,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:05:41,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:05:41" (1/1) ... [2021-10-21 19:05:41,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55d3dd18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:41, skipping insertion in model container [2021-10-21 19:05:41,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:05:41" (1/1) ... [2021-10-21 19:05:41,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:05:41,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:05:41,224 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_ec4e5811-0e63-4989-badc-68046bbfef0b/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c[557,570] [2021-10-21 19:05:41,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:05:41,253 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:05:41,265 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_ec4e5811-0e63-4989-badc-68046bbfef0b/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c[557,570] [2021-10-21 19:05:41,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:05:41,287 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:05:41,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:41 WrapperNode [2021-10-21 19:05:41,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:05:41,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:05:41,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:05:41,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:05:41,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:41" (1/1) ... [2021-10-21 19:05:41,302 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:41" (1/1) ... [2021-10-21 19:05:41,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:05:41,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:05:41,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:05:41,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:05:41,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:41" (1/1) ... [2021-10-21 19:05:41,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:41" (1/1) ... [2021-10-21 19:05:41,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:41" (1/1) ... [2021-10-21 19:05:41,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:41" (1/1) ... [2021-10-21 19:05:41,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:41" (1/1) ... [2021-10-21 19:05:41,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:41" (1/1) ... [2021-10-21 19:05:41,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:41" (1/1) ... [2021-10-21 19:05:41,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:05:41,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:05:41,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:05:41,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:05:41,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:41" (1/1) ... [2021-10-21 19:05:41,358 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:05:41,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:05:41,391 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:05:41,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:05:41,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:05:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:05:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:05:41,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:05:41,651 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:05:41,660 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-21 19:05:41,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:05:41 BoogieIcfgContainer [2021-10-21 19:05:41,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:05:41,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:05:41,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:05:41,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:05:41,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:05:41" (1/3) ... [2021-10-21 19:05:41,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c50354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:05:41, skipping insertion in model container [2021-10-21 19:05:41,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:41" (2/3) ... [2021-10-21 19:05:41,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c50354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:05:41, skipping insertion in model container [2021-10-21 19:05:41,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:05:41" (3/3) ... [2021-10-21 19:05:41,689 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Newton_pseudoconstant.c [2021-10-21 19:05:41,694 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:05:41,702 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:05:41,746 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:05:41,753 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 [2021-10-21 19:05:41,753 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:05:41,783 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) [2021-10-21 19:05:41,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:05:41,790 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:05:41,790 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:05:41,791 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:05:41,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:05:41,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2021-10-21 19:05:41,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:05:41,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136913676] [2021-10-21 19:05:41,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:05:41,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:05:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:05:41,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:05:41,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:05:41,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136913676] [2021-10-21 19:05:41,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136913676] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:05:41,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:05:41,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:05:41,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745196057] [2021-10-21 19:05:41,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:05:41,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:05:41,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:05:41,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:05:41,975 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) [2021-10-21 19:05:41,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:05:41,990 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2021-10-21 19:05:41,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:05:41,991 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 [2021-10-21 19:05:41,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:05:41,999 INFO L225 Difference]: With dead ends: 34 [2021-10-21 19:05:41,999 INFO L226 Difference]: Without dead ends: 14 [2021-10-21 19:05:42,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:05:42,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-21 19:05:42,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-21 19:05:42,028 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) [2021-10-21 19:05:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-21 19:05:42,030 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-10-21 19:05:42,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:05:42,031 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-21 19:05:42,031 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) [2021-10-21 19:05:42,031 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-21 19:05:42,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:05:42,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:05:42,032 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:05:42,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:05:42,033 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:05:42,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:05:42,034 INFO L82 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2021-10-21 19:05:42,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:05:42,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616989219] [2021-10-21 19:05:42,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:05:42,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:05:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:05:42,066 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:05:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:05:42,113 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:05:42,114 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:05:42,115 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:05:42,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:05:42,123 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:05:42,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:05:42 BoogieIcfgContainer [2021-10-21 19:05:42,150 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:05:42,151 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:05:42,151 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:05:42,151 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:05:42,152 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:05:41" (3/4) ... [2021-10-21 19:05:42,155 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:05:42,155 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:05:42,157 INFO L168 Benchmark]: Toolchain (without parser) took 1131.62 ms. Allocated memory is still 121.6 MB. Free memory was 98.4 MB in the beginning and 58.3 MB in the end (delta: 40.2 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:05:42,158 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 121.6 MB. Free memory is still 75.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:05:42,158 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.17 ms. Allocated memory is still 121.6 MB. Free memory was 98.4 MB in the beginning and 95.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:05:42,159 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.34 ms. Allocated memory is still 121.6 MB. Free memory was 95.1 MB in the beginning and 93.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:05:42,160 INFO L168 Benchmark]: Boogie Preprocessor took 22.77 ms. Allocated memory is still 121.6 MB. Free memory was 93.4 MB in the beginning and 92.5 MB in the end (delta: 905.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:05:42,161 INFO L168 Benchmark]: RCFGBuilder took 315.04 ms. Allocated memory is still 121.6 MB. Free memory was 92.1 MB in the beginning and 82.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:05:42,161 INFO L168 Benchmark]: TraceAbstraction took 482.58 ms. Allocated memory is still 121.6 MB. Free memory was 81.6 MB in the beginning and 58.6 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:05:42,162 INFO L168 Benchmark]: Witness Printer took 4.29 ms. Allocated memory is still 121.6 MB. Free memory was 58.6 MB in the beginning and 58.3 MB in the end (delta: 394.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:05:42,166 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 121.6 MB. Free memory is still 75.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 262.17 ms. Allocated memory is still 121.6 MB. Free memory was 98.4 MB in the beginning and 95.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.34 ms. Allocated memory is still 121.6 MB. Free memory was 95.1 MB in the beginning and 93.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.77 ms. Allocated memory is still 121.6 MB. Free memory was 93.4 MB in the beginning and 92.5 MB in the end (delta: 905.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 315.04 ms. Allocated memory is still 121.6 MB. Free memory was 92.1 MB in the beginning and 82.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 482.58 ms. Allocated memory is still 121.6 MB. Free memory was 81.6 MB in the beginning and 58.6 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.29 ms. Allocated memory is still 121.6 MB. Free memory was 58.6 MB in the beginning and 58.3 MB in the end (delta: 394.3 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 377.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 27.0ms, AutomataDifference: 41.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.0ms SsaConstructionTime, 53.2ms SatisfiabilityAnalysisTime, 48.2ms 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 [2021-10-21 19:05:42,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/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-e943c26 [2021-10-21 19:05:44,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:05:44,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:05:44,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:05:44,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:05:44,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:05:44,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:05:44,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:05:44,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:05:44,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:05:44,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:05:44,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:05:44,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:05:44,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:05:44,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:05:44,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:05:44,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:05:44,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:05:44,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:05:44,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:05:44,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:05:44,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:05:44,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:05:44,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:05:44,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:05:44,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:05:44,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:05:44,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:05:44,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:05:44,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:05:44,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:05:44,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:05:44,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:05:44,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:05:44,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:05:44,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:05:44,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:05:44,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:05:44,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:05:44,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:05:44,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:05:44,790 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 19:05:44,826 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:05:44,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:05:44,827 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:05:44,827 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:05:44,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:05:44,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:05:44,829 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:05:44,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:05:44,830 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:05:44,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:05:44,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:05:44,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:05:44,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:05:44,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:05:44,832 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 19:05:44,832 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 19:05:44,832 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:05:44,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:05:44,833 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:05:44,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:05:44,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:05:44,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:05:44,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:05:44,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:05:44,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:05:44,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:05:44,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:05:44,835 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 19:05:44,835 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 19:05:44,835 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:05:44,835 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:05:44,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:05:44,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:05:44,836 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 19:05:44,836 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_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6126c292b79b2663ac597229a34ee56f0c149d9383459c587f75b8bcd2abff05 [2021-10-21 19:05:45,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:05:45,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:05:45,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:05:45,224 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:05:45,225 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:05:45,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2021-10-21 19:05:45,308 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/data/633c014d2/ca00162270614df0b9ec4b341c09b758/FLAG3afacc5c1 [2021-10-21 19:05:45,860 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:05:45,860 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2021-10-21 19:05:45,869 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/data/633c014d2/ca00162270614df0b9ec4b341c09b758/FLAG3afacc5c1 [2021-10-21 19:05:46,201 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/data/633c014d2/ca00162270614df0b9ec4b341c09b758 [2021-10-21 19:05:46,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:05:46,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:05:46,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:05:46,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:05:46,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:05:46,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:05:46" (1/1) ... [2021-10-21 19:05:46,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29987b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:46, skipping insertion in model container [2021-10-21 19:05:46,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:05:46" (1/1) ... [2021-10-21 19:05:46,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:05:46,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:05:46,370 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_ec4e5811-0e63-4989-badc-68046bbfef0b/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c[557,570] [2021-10-21 19:05:46,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:05:46,404 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:05:46,441 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_ec4e5811-0e63-4989-badc-68046bbfef0b/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c[557,570] [2021-10-21 19:05:46,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:05:46,484 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:05:46,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:46 WrapperNode [2021-10-21 19:05:46,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:05:46,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:05:46,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:05:46,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:05:46,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:46" (1/1) ... [2021-10-21 19:05:46,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:46" (1/1) ... [2021-10-21 19:05:46,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:05:46,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:05:46,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:05:46,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:05:46,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:46" (1/1) ... [2021-10-21 19:05:46,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:46" (1/1) ... [2021-10-21 19:05:46,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:46" (1/1) ... [2021-10-21 19:05:46,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:46" (1/1) ... [2021-10-21 19:05:46,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:46" (1/1) ... [2021-10-21 19:05:46,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:46" (1/1) ... [2021-10-21 19:05:46,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:46" (1/1) ... [2021-10-21 19:05:46,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:05:46,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:05:46,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:05:46,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:05:46,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:46" (1/1) ... [2021-10-21 19:05:46,563 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:05:46,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:05:46,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:05:46,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:05:46,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 19:05:46,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:05:46,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:05:46,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:05:56,192 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:05:56,193 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-21 19:05:56,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:05:56 BoogieIcfgContainer [2021-10-21 19:05:56,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:05:56,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:05:56,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:05:56,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:05:56,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:05:46" (1/3) ... [2021-10-21 19:05:56,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efeb2f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:05:56, skipping insertion in model container [2021-10-21 19:05:56,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:05:46" (2/3) ... [2021-10-21 19:05:56,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efeb2f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:05:56, skipping insertion in model container [2021-10-21 19:05:56,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:05:56" (3/3) ... [2021-10-21 19:05:56,205 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Newton_pseudoconstant.c [2021-10-21 19:05:56,210 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:05:56,211 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:05:56,270 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:05:56,277 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 [2021-10-21 19:05:56,278 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:05:56,291 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) [2021-10-21 19:05:56,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:05:56,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:05:56,296 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:05:56,297 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:05:56,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:05:56,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2021-10-21 19:05:56,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:05:56,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38991949] [2021-10-21 19:05:56,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:05:56,316 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:05:56,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:05:56,318 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:05:56,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 19:05:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:05:58,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-21 19:05:58,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:05:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:05:58,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:05:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:05:58,258 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:05:58,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38991949] [2021-10-21 19:05:58,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38991949] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:05:58,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:05:58,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 19:05:58,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313886224] [2021-10-21 19:05:58,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:05:58,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:05:58,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:05:58,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:05:58,281 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) [2021-10-21 19:05:58,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:05:58,295 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2021-10-21 19:05:58,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:05:58,296 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 [2021-10-21 19:05:58,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:05:58,304 INFO L225 Difference]: With dead ends: 34 [2021-10-21 19:05:58,304 INFO L226 Difference]: Without dead ends: 14 [2021-10-21 19:05:58,306 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:05:58,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-21 19:05:58,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-21 19:05:58,333 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) [2021-10-21 19:05:58,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-21 19:05:58,334 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-10-21 19:05:58,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:05:58,335 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-21 19:05:58,335 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) [2021-10-21 19:05:58,335 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-21 19:05:58,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:05:58,336 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:05:58,336 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:05:58,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:05:58,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:05:58,559 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:05:58,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:05:58,560 INFO L82 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2021-10-21 19:05:58,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:05:58,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233012975] [2021-10-21 19:05:58,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:05:58,561 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:05:58,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:05:58,563 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:05:58,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 19:06:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:06:00,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:06:00,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:06:00,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:06:00,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:06:11,422 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 [2021-10-21 19:06:13,487 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 [2021-10-21 19:06:31,364 WARN L207 SmtUtils]: Spent 9.46 s on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2021-10-21 19:06:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:06:37,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:06:37,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233012975] [2021-10-21 19:06:37,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233012975] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:06:37,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:06:37,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-21 19:06:37,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271543499] [2021-10-21 19:06:37,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:06:37,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:06:37,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:06:37,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=27, Unknown=2, NotChecked=10, Total=56 [2021-10-21 19:06:37,836 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) [2021-10-21 19:06:40,718 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 [2021-10-21 19:07:04,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:07:04,385 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2021-10-21 19:07:04,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:07:04,460 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 [2021-10-21 19:07:04,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:07:04,461 INFO L225 Difference]: With dead ends: 32 [2021-10-21 19:07:04,461 INFO L226 Difference]: Without dead ends: 20 [2021-10-21 19:07:04,462 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 22377.3ms TimeCoverageRelationStatistics Valid=19, Invalid=28, Unknown=3, NotChecked=22, Total=72 [2021-10-21 19:07:04,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-21 19:07:04,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-21 19:07:04,466 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) [2021-10-21 19:07:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-10-21 19:07:04,467 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2021-10-21 19:07:04,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:07:04,468 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-10-21 19:07:04,468 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) [2021-10-21 19:07:04,468 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-10-21 19:07:04,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:07:04,475 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:07:04,475 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:07:04,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:07:04,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:07:04,679 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:07:04,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:07:04,680 INFO L82 PathProgramCache]: Analyzing trace with hash -274400360, now seen corresponding path program 1 times [2021-10-21 19:07:04,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:07:04,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138090376] [2021-10-21 19:07:04,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:07:04,681 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:07:04,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:07:04,688 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:07:04,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 19:07:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:07:07,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-21 19:07:07,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:07:55,057 WARN L207 SmtUtils]: Spent 13.63 s on a formula simplification that was a NOOP. DAG size: 22 [2021-10-21 19:08:30,530 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 [2021-10-21 19:08:32,604 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 [2021-10-21 19:08:47,623 WARN L207 SmtUtils]: Spent 5.09 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:08:57,311 WARN L207 SmtUtils]: Spent 5.06 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 19:08:59,599 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 [2021-10-21 19:09:01,675 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 [2021-10-21 19:09:07,531 WARN L207 SmtUtils]: Spent 5.84 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:09:13,310 WARN L207 SmtUtils]: Spent 5.78 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:09:19,270 WARN L207 SmtUtils]: Spent 5.96 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:09:25,257 WARN L207 SmtUtils]: Spent 5.99 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:09:31,076 WARN L207 SmtUtils]: Spent 5.82 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 19:09:36,349 WARN L207 SmtUtils]: Spent 5.27 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:09:38,789 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 [2021-10-21 19:09:44,515 WARN L207 SmtUtils]: Spent 5.68 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:09:52,670 WARN L207 SmtUtils]: Spent 5.72 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:09:58,510 WARN L207 SmtUtils]: Spent 5.84 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:10:04,194 WARN L207 SmtUtils]: Spent 5.68 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:10:10,040 WARN L207 SmtUtils]: Spent 5.85 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:10:15,944 WARN L207 SmtUtils]: Spent 5.90 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-21 19:10:21,846 WARN L207 SmtUtils]: Spent 5.90 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-21 19:10:27,821 WARN L207 SmtUtils]: Spent 5.97 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 19:10:36,143 WARN L207 SmtUtils]: Spent 5.82 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:10:44,575 WARN L207 SmtUtils]: Spent 5.97 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:10:50,614 WARN L207 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:10:56,542 WARN L207 SmtUtils]: Spent 5.93 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:11:02,451 WARN L207 SmtUtils]: Spent 5.91 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:11:07,897 WARN L207 SmtUtils]: Spent 5.44 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 19:11:13,891 WARN L207 SmtUtils]: Spent 5.98 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 19:11:22,282 WARN L207 SmtUtils]: Spent 5.93 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:11:28,283 WARN L207 SmtUtils]: Spent 6.00 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:11:34,185 WARN L207 SmtUtils]: Spent 5.90 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:11:40,082 WARN L207 SmtUtils]: Spent 5.90 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:11:45,537 WARN L207 SmtUtils]: Spent 5.45 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 19:11:51,496 WARN L207 SmtUtils]: Spent 5.96 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 19:11:57,428 WARN L207 SmtUtils]: Spent 5.93 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:12:03,362 WARN L207 SmtUtils]: Spent 5.93 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:12:09,252 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:12:15,282 WARN L207 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 19:12:21,355 WARN L207 SmtUtils]: Spent 6.07 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 19:12:27,565 WARN L207 SmtUtils]: Spent 6.21 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 19:12:33,620 WARN L207 SmtUtils]: Spent 6.02 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:12:39,576 WARN L207 SmtUtils]: Spent 5.96 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:12:45,447 WARN L207 SmtUtils]: Spent 5.86 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:12:51,536 WARN L207 SmtUtils]: Spent 6.08 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-21 19:12:57,614 WARN L207 SmtUtils]: Spent 6.08 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 19:13:03,571 WARN L207 SmtUtils]: Spent 5.96 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 19:13:09,417 WARN L207 SmtUtils]: Spent 5.85 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-21 19:13:15,264 WARN L207 SmtUtils]: Spent 5.85 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-21 19:13:21,127 WARN L207 SmtUtils]: Spent 5.86 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-21 19:13:26,909 WARN L207 SmtUtils]: Spent 5.78 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 19:13:29,397 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 [2021-10-21 19:13:31,716 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 [2021-10-21 19:13:40,052 WARN L207 SmtUtils]: Spent 5.85 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:13:48,437 WARN L207 SmtUtils]: Spent 5.91 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:13:54,632 WARN L207 SmtUtils]: Spent 6.19 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:14:00,900 WARN L207 SmtUtils]: Spent 6.27 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:14:07,094 WARN L207 SmtUtils]: Spent 6.19 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:14:12,694 WARN L207 SmtUtils]: Spent 5.60 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 19:14:18,840 WARN L207 SmtUtils]: Spent 6.15 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 19:14:27,644 WARN L207 SmtUtils]: Spent 6.28 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:14:33,857 WARN L207 SmtUtils]: Spent 6.21 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:14:40,031 WARN L207 SmtUtils]: Spent 6.17 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:14:46,221 WARN L207 SmtUtils]: Spent 6.19 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:14:51,890 WARN L207 SmtUtils]: Spent 5.67 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 19:14:57,932 WARN L207 SmtUtils]: Spent 6.04 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 19:15:04,162 WARN L207 SmtUtils]: Spent 6.23 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:15:10,444 WARN L207 SmtUtils]: Spent 6.28 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:15:16,789 WARN L207 SmtUtils]: Spent 6.34 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:15:23,090 WARN L207 SmtUtils]: Spent 6.30 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 19:15:29,201 WARN L207 SmtUtils]: Spent 6.11 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 19:15:35,438 WARN L207 SmtUtils]: Spent 6.24 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 19:15:37,979 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 [2021-10-21 19:15:40,361 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 [2021-10-21 19:15:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:40,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:15:50,825 WARN L207 SmtUtils]: Spent 5.05 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:15:55,883 WARN L207 SmtUtils]: Spent 5.06 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:15:58,164 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 [2021-10-21 19:16:00,457 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 [2021-10-21 19:16:05,557 WARN L207 SmtUtils]: Spent 5.09 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:16:10,603 WARN L207 SmtUtils]: Spent 5.05 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:16:15,681 WARN L207 SmtUtils]: Spent 5.08 s on a formula simplification that was a NOOP. DAG size: 4 [2021-10-21 19:16:17,956 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 [2021-10-21 19:16:20,326 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 [2021-10-21 19:16:25,600 WARN L207 SmtUtils]: Spent 5.26 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 19:16:31,005 WARN L207 SmtUtils]: Spent 5.40 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:16:36,423 WARN L207 SmtUtils]: Spent 5.42 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 19:16:41,831 WARN L207 SmtUtils]: Spent 5.40 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 19:16:44,221 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 [2021-10-21 19:16:45,069 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-21 19:16:45,070 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:16:45,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138090376] [2021-10-21 19:16:45,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/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") [2021-10-21 19:16:45,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [793740133] [2021-10-21 19:16:45,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:45,072 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-21 19:16:45,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/cvc4 [2021-10-21 19:16:45,075 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-21 19:16:45,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-10-21 19:16:45,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-21 19:16:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:51,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:16:51,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:51,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-21 19:16:51,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102685685] [2021-10-21 19:16:51,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:51,458 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:51,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:51,465 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:51,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 19:18:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:22,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-21 19:18:22,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:18:22,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-21 19:18:22,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:18:22,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-21 19:18:22,827 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-21 19:18:22,828 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-21 19:18:22,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:18:23,039 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2021-10-21 19:18:23,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:18:23,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-10-21 19:18:23,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:18:23,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec4e5811-0e63-4989-badc-68046bbfef0b/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:18:23,457 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:18:23,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:18:23 BoogieIcfgContainer [2021-10-21 19:18:23,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:18:23,486 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:18:23,487 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:18:23,488 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:18:23,488 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:05:56" (3/4) ... [2021-10-21 19:18:23,492 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:18:23,493 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:18:23,494 INFO L168 Benchmark]: Toolchain (without parser) took 757287.82 ms. Allocated memory is still 62.9 MB. Free memory was 42.7 MB in the beginning and 28.1 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:18:23,496 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 62.9 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:18:23,497 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.27 ms. Allocated memory is still 62.9 MB. Free memory was 42.5 MB in the beginning and 45.1 MB in the end (delta: -2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:18:23,500 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.45 ms. Allocated memory is still 62.9 MB. Free memory was 44.9 MB in the beginning and 43.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:18:23,505 INFO L168 Benchmark]: Boogie Preprocessor took 30.01 ms. Allocated memory is still 62.9 MB. Free memory was 43.3 MB in the beginning and 42.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:18:23,508 INFO L168 Benchmark]: RCFGBuilder took 9639.83 ms. Allocated memory is still 62.9 MB. Free memory was 41.8 MB in the beginning and 31.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:18:23,510 INFO L168 Benchmark]: TraceAbstraction took 747288.05 ms. Allocated memory is still 62.9 MB. Free memory was 30.9 MB in the beginning and 28.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:18:23,511 INFO L168 Benchmark]: Witness Printer took 6.49 ms. Allocated memory is still 62.9 MB. Free memory was 28.5 MB in the beginning and 28.1 MB in the end (delta: 384.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:18:23,515 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 62.9 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 278.27 ms. Allocated memory is still 62.9 MB. Free memory was 42.5 MB in the beginning and 45.1 MB in the end (delta: -2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.45 ms. Allocated memory is still 62.9 MB. Free memory was 44.9 MB in the beginning and 43.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.01 ms. Allocated memory is still 62.9 MB. Free memory was 43.3 MB in the beginning and 42.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 9639.83 ms. Allocated memory is still 62.9 MB. Free memory was 41.8 MB in the beginning and 31.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 747288.05 ms. Allocated memory is still 62.9 MB. Free memory was 30.9 MB in the beginning and 28.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Witness Printer took 6.49 ms. Allocated memory is still 62.9 MB. Free memory was 28.5 MB in the beginning and 28.1 MB in the end (delta: 384.4 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 747186.5ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 16.1ms, AutomataDifference: 26667.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 31 SDtfs, 1 SDslu, 29 SDs, 0 SdLazy, 23 SolverSat, 0 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 23694.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 22377.4ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 19.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 30.9ms SsaConstructionTime, 3010.3ms SatisfiabilityAnalysisTime, 38082.2ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 44 ConstructedInterpolants, 1 QuantifiedInterpolants, 272 SizeOfPredicates, 7 NumberOfNonLiveVariables, 94 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...