./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX --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 736ab1a5e950f94d10703cde0979d12465a57eb1332dc067f0dbd06f88e9370a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:09:06,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:09:06,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:09:07,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:09:07,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:09:07,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:09:07,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:09:07,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:09:07,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:09:07,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:09:07,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:09:07,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:09:07,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:09:07,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:09:07,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:09:07,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:09:07,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:09:07,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:09:07,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:09:07,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:09:07,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:09:07,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:09:07,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:09:07,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:09:07,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:09:07,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:09:07,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:09:07,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:09:07,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:09:07,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:09:07,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:09:07,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:09:07,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:09:07,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:09:07,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:09:07,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:09:07,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:09:07,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:09:07,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:09:07,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:09:07,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:09:07,102 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:09:07,156 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:09:07,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:09:07,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:09:07,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:09:07,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:09:07,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:09:07,167 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:09:07,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:09:07,168 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:09:07,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:09:07,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:09:07,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:09:07,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:09:07,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:09:07,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:09:07,171 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:09:07,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:09:07,172 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:09:07,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:09:07,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:09:07,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:09:07,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:09:07,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:09:07,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:09:07,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:09:07,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:09:07,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:09:07,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:09:07,175 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:09:07,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:09:07,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:09:07,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:09:07,178 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_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 736ab1a5e950f94d10703cde0979d12465a57eb1332dc067f0dbd06f88e9370a [2021-11-09 09:09:07,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:09:07,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:09:07,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:09:07,507 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:09:07,508 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:09:07,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2021-11-09 09:09:07,590 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/data/8d32cd630/5affd911c2bd4c1ca36e8016504b9b2a/FLAG5536150c5 [2021-11-09 09:09:08,160 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:09:08,161 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2021-11-09 09:09:08,175 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/data/8d32cd630/5affd911c2bd4c1ca36e8016504b9b2a/FLAG5536150c5 [2021-11-09 09:09:08,484 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/data/8d32cd630/5affd911c2bd4c1ca36e8016504b9b2a [2021-11-09 09:09:08,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:09:08,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:09:08,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:08,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:09:08,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:09:08,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:08" (1/1) ... [2021-11-09 09:09:08,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ebd351b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08, skipping insertion in model container [2021-11-09 09:09:08,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:08" (1/1) ... [2021-11-09 09:09:08,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:09:08,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:09:08,730 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_335e60f4-43c4-4052-adad-292633a369b9/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c[831,844] [2021-11-09 09:09:08,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:08,766 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:09:08,780 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_335e60f4-43c4-4052-adad-292633a369b9/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c[831,844] [2021-11-09 09:09:08,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:08,805 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:09:08,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08 WrapperNode [2021-11-09 09:09:08,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:08,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:09:08,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:09:08,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:09:08,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08" (1/1) ... [2021-11-09 09:09:08,825 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08" (1/1) ... [2021-11-09 09:09:08,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:09:08,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:09:08,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:09:08,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:09:08,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08" (1/1) ... [2021-11-09 09:09:08,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08" (1/1) ... [2021-11-09 09:09:08,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08" (1/1) ... [2021-11-09 09:09:08,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08" (1/1) ... [2021-11-09 09:09:08,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08" (1/1) ... [2021-11-09 09:09:08,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08" (1/1) ... [2021-11-09 09:09:08,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08" (1/1) ... [2021-11-09 09:09:08,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:09:08,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:09:08,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:09:08,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:09:08,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08" (1/1) ... [2021-11-09 09:09:08,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:09:08,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:08,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:08,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:09:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:09:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:09:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:09:08,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:09:09,233 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:09:09,233 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-09 09:09:09,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:09 BoogieIcfgContainer [2021-11-09 09:09:09,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:09:09,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:09:09,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:09:09,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:09:09,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:09:08" (1/3) ... [2021-11-09 09:09:09,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd809b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:09:09, skipping insertion in model container [2021-11-09 09:09:09,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08" (2/3) ... [2021-11-09 09:09:09,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd809b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:09:09, skipping insertion in model container [2021-11-09 09:09:09,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:09" (3/3) ... [2021-11-09 09:09:09,246 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c [2021-11-09 09:09:09,252 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:09:09,252 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 09:09:09,330 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:09:09,345 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 [2021-11-09 09:09:09,345 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 09:09:09,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-11-09 09:09:09,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 09:09:09,386 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:09,387 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:09,388 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:09:09,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:09,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1706227183, now seen corresponding path program 1 times [2021-11-09 09:09:09,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:09,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123575566] [2021-11-09 09:09:09,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:09,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:09,572 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:09,631 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:09,638 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 09:09:09,639 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:09:09,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:09:09,645 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-09 09:09:09,649 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 09:09:09,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 09:09:09 BoogieIcfgContainer [2021-11-09 09:09:09,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 09:09:09,698 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 09:09:09,698 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 09:09:09,698 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 09:09:09,699 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:09" (3/4) ... [2021-11-09 09:09:09,702 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 09:09:09,702 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 09:09:09,705 INFO L168 Benchmark]: Toolchain (without parser) took 1214.89 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 49.4 MB in the beginning and 54.6 MB in the end (delta: -5.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:09,706 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 86.0 MB. Free memory is still 65.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:09:09,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.35 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 49.2 MB in the beginning and 82.1 MB in the end (delta: -32.9 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:09,710 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.97 ms. Allocated memory is still 104.9 MB. Free memory was 81.9 MB in the beginning and 80.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:09,710 INFO L168 Benchmark]: Boogie Preprocessor took 28.27 ms. Allocated memory is still 104.9 MB. Free memory was 80.5 MB in the beginning and 79.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:09,711 INFO L168 Benchmark]: RCFGBuilder took 362.54 ms. Allocated memory is still 104.9 MB. Free memory was 79.3 MB in the beginning and 69.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:09,718 INFO L168 Benchmark]: TraceAbstraction took 456.69 ms. Allocated memory is still 104.9 MB. Free memory was 68.8 MB in the beginning and 54.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:09,720 INFO L168 Benchmark]: Witness Printer took 4.81 ms. Allocated memory is still 104.9 MB. Free memory was 54.9 MB in the beginning and 54.6 MB in the end (delta: 275.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:09:09,728 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 86.0 MB. Free memory is still 65.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 316.35 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 49.2 MB in the beginning and 82.1 MB in the end (delta: -32.9 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.97 ms. Allocated memory is still 104.9 MB. Free memory was 81.9 MB in the beginning and 80.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.27 ms. Allocated memory is still 104.9 MB. Free memory was 80.5 MB in the beginning and 79.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 362.54 ms. Allocated memory is still 104.9 MB. Free memory was 79.3 MB in the beginning and 69.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 456.69 ms. Allocated memory is still 104.9 MB. Free memory was 68.8 MB in the beginning and 54.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.81 ms. Allocated memory is still 104.9 MB. Free memory was 54.9 MB in the beginning and 54.6 MB in the end (delta: 275.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: 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 55, overapproximation of someUnaryDOUBLEoperation at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44. Possible FailurePath: [L22] double _EPS = 1e-6; VAL [_EPS=1/1000000] [L49] double d, r; [L51] d = 1. VAL [_EPS=1/1000000] [L51] COND TRUE d <= 20. [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; VAL [_EPS=1/1000000] [L28] COND TRUE Input <= 1.0 [L28] xn = 1.0 VAL [_EPS=1/1000000] [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 VAL [_EPS=1/1000000] [L35] COND FALSE !(\read(cond)) VAL [_EPS=1/1000000] [L44] return 1.0 / xnp1; VAL [_EPS=1/1000000] [L53] r = SqrtR(d) [L20] COND TRUE !(cond) VAL [_EPS=1/1000000] [L20] reach_error() VAL [_EPS=1/1000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2021-11-09 09:09:09,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX --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 736ab1a5e950f94d10703cde0979d12465a57eb1332dc067f0dbd06f88e9370a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:09:12,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:09:12,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:09:12,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:09:12,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:09:12,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:09:12,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:09:12,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:09:12,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:09:12,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:09:12,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:09:12,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:09:12,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:09:12,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:09:12,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:09:12,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:09:12,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:09:12,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:09:12,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:09:12,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:09:12,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:09:12,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:09:12,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:09:12,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:09:12,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:09:12,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:09:12,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:09:12,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:09:12,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:09:12,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:09:12,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:09:12,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:09:12,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:09:12,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:09:12,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:09:12,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:09:12,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:09:12,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:09:12,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:09:12,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:09:12,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:09:12,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-09 09:09:12,668 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:09:12,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:09:12,669 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:09:12,669 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:09:12,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:09:12,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:09:12,672 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:09:12,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:09:12,673 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:09:12,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:09:12,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:09:12,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:09:12,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:09:12,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:09:12,676 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 09:09:12,676 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 09:09:12,676 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:09:12,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:09:12,677 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:09:12,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:09:12,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:09:12,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:09:12,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:09:12,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:09:12,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:09:12,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:09:12,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:09:12,680 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 09:09:12,680 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 09:09:12,680 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:09:12,680 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:09:12,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:09:12,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:09:12,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 09:09:12,681 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_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 736ab1a5e950f94d10703cde0979d12465a57eb1332dc067f0dbd06f88e9370a [2021-11-09 09:09:13,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:09:13,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:09:13,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:09:13,161 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:09:13,162 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:09:13,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2021-11-09 09:09:13,246 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/data/e2ef9ffb7/6e31e0f0dff544a8a94a52622cd47b44/FLAGe9b2500d5 [2021-11-09 09:09:13,786 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:09:13,786 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2021-11-09 09:09:13,792 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/data/e2ef9ffb7/6e31e0f0dff544a8a94a52622cd47b44/FLAGe9b2500d5 [2021-11-09 09:09:14,129 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/data/e2ef9ffb7/6e31e0f0dff544a8a94a52622cd47b44 [2021-11-09 09:09:14,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:09:14,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:09:14,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:14,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:09:14,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:09:14,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:14" (1/1) ... [2021-11-09 09:09:14,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b15fd19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:14, skipping insertion in model container [2021-11-09 09:09:14,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:14" (1/1) ... [2021-11-09 09:09:14,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:09:14,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:09:14,370 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_335e60f4-43c4-4052-adad-292633a369b9/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c[831,844] [2021-11-09 09:09:14,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:14,444 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:09:14,484 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_335e60f4-43c4-4052-adad-292633a369b9/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c[831,844] [2021-11-09 09:09:14,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:14,539 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:09:14,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:14 WrapperNode [2021-11-09 09:09:14,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:14,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:09:14,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:09:14,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:09:14,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:14" (1/1) ... [2021-11-09 09:09:14,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:14" (1/1) ... [2021-11-09 09:09:14,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:09:14,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:09:14,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:09:14,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:09:14,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:14" (1/1) ... [2021-11-09 09:09:14,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:14" (1/1) ... [2021-11-09 09:09:14,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:14" (1/1) ... [2021-11-09 09:09:14,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:14" (1/1) ... [2021-11-09 09:09:14,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:14" (1/1) ... [2021-11-09 09:09:14,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:14" (1/1) ... [2021-11-09 09:09:14,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:14" (1/1) ... [2021-11-09 09:09:14,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:09:14,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:09:14,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:09:14,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:09:14,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:14" (1/1) ... [2021-11-09 09:09:14,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:09:14,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:14,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:14,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:09:14,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 09:09:14,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:09:14,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:09:14,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:09:22,230 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:09:22,231 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-09 09:09:22,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:22 BoogieIcfgContainer [2021-11-09 09:09:22,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:09:22,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:09:22,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:09:22,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:09:22,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:09:14" (1/3) ... [2021-11-09 09:09:22,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e463d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:09:22, skipping insertion in model container [2021-11-09 09:09:22,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:14" (2/3) ... [2021-11-09 09:09:22,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e463d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:09:22, skipping insertion in model container [2021-11-09 09:09:22,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:22" (3/3) ... [2021-11-09 09:09:22,244 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c [2021-11-09 09:09:22,251 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:09:22,251 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 09:09:22,335 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:09:22,343 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 [2021-11-09 09:09:22,343 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 09:09:22,360 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-11-09 09:09:22,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 09:09:22,376 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:22,376 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:22,378 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:09:22,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:22,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1706227183, now seen corresponding path program 1 times [2021-11-09 09:09:22,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:22,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339948393] [2021-11-09 09:09:22,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:22,408 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:22,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:22,412 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:22,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 09:09:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:24,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 09:09:24,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:25,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:25,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:35,922 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 [2021-11-09 09:09:37,999 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 [2021-11-09 09:09:53,006 WARN L207 SmtUtils]: Spent 6.75 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-09 09:09:57,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:57,141 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:57,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339948393] [2021-11-09 09:09:57,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339948393] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:57,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:57,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-09 09:09:57,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274381344] [2021-11-09 09:09:57,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:09:57,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:57,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:09:57,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=27, Unknown=2, NotChecked=10, Total=56 [2021-11-09 09:09:57,169 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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 8 states, 8 states have (on average 2.0) internal successors, (16), 7 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) [2021-11-09 09:09:59,531 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 [2021-11-09 09:10:31,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:10:31,446 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2021-11-09 09:10:31,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:10:31,521 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 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) Word has length 10 [2021-11-09 09:10:31,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:10:31,528 INFO L225 Difference]: With dead ends: 38 [2021-11-09 09:10:31,529 INFO L226 Difference]: Without dead ends: 16 [2021-11-09 09:10:31,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=19, Invalid=28, Unknown=3, NotChecked=22, Total=72 [2021-11-09 09:10:31,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-09 09:10:31,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-09 09:10:31,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) [2021-11-09 09:10:31,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-11-09 09:10:31,555 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2021-11-09 09:10:31,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:10:31,555 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-11-09 09:10:31,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 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) [2021-11-09 09:10:31,556 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-11-09 09:10:31,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 09:10:31,557 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:10:31,557 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:10:31,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:10:31,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:10:31,758 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:10:31,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:10:31,759 INFO L85 PathProgramCache]: Analyzing trace with hash 68780179, now seen corresponding path program 1 times [2021-11-09 09:10:31,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:10:31,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689346262] [2021-11-09 09:10:31,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:10:31,761 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:10:31,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:10:31,763 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:10:31,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 09:10:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:10:34,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:10:34,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:10:34,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:10:34,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:10:34,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:10:34,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:10:34,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689346262] [2021-11-09 09:10:34,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689346262] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:10:34,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:10:34,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 09:10:34,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885147779] [2021-11-09 09:10:34,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:10:34,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:10:34,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:10:34,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:10:34,824 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-11-09 09:10:58,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:10:58,234 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2021-11-09 09:10:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:10:58,417 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 10 [2021-11-09 09:10:58,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:10:58,418 INFO L225 Difference]: With dead ends: 27 [2021-11-09 09:10:58,419 INFO L226 Difference]: Without dead ends: 17 [2021-11-09 09:10:58,419 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:10:58,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-09 09:10:58,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-11-09 09:10:58,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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) [2021-11-09 09:10:58,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-11-09 09:10:58,424 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2021-11-09 09:10:58,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:10:58,424 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-11-09 09:10:58,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-11-09 09:10:58,425 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-11-09 09:10:58,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-09 09:10:58,425 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:10:58,425 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:10:58,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:10:58,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:10:58,626 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:10:58,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:10:58,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1301780435, now seen corresponding path program 1 times [2021-11-09 09:10:58,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:10:58,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59346510] [2021-11-09 09:10:58,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:10:58,628 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:10:58,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:10:58,629 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:10:58,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 09:11:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:11:02,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 09:11:02,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:11:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:11:04,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:11:14,599 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 .cse1)))) is different from false [2021-11-09 09:11:29,204 WARN L207 SmtUtils]: Spent 6.00 s on a formula simplification that was a NOOP. DAG size: 28 [2021-11-09 09:11:35,026 WARN L207 SmtUtils]: Spent 5.82 s on a formula simplification that was a NOOP. DAG size: 26 [2021-11-09 09:11:37,530 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~Input c_ULTIMATE.start_SqrtR_~xn~0) c_ULTIMATE.start_SqrtR_~xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xn~0) c_ULTIMATE.start_SqrtR_~xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 .cse1)))) is different from false [2021-11-09 09:11:40,021 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~Input c_ULTIMATE.start_SqrtR_~xn~0) c_ULTIMATE.start_SqrtR_~xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xn~0) c_ULTIMATE.start_SqrtR_~xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 .cse1)))) is different from true [2021-11-09 09:11:45,913 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 28 [2021-11-09 09:11:51,826 WARN L207 SmtUtils]: Spent 5.91 s on a formula simplification that was a NOOP. DAG size: 26 [2021-11-09 09:11:57,194 WARN L207 SmtUtils]: Spent 5.36 s on a formula simplification that was a NOOP. DAG size: 25 [2021-11-09 09:12:02,555 WARN L207 SmtUtils]: Spent 5.36 s on a formula simplification that was a NOOP. DAG size: 27 [2021-11-09 09:12:04,909 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~Input .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_SqrtR_~Input) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from false [2021-11-09 09:12:07,260 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~Input .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_SqrtR_~Input) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from true [2021-11-09 09:12:12,758 WARN L207 SmtUtils]: Spent 5.49 s on a formula simplification that was a NOOP. DAG size: 27 [2021-11-09 09:12:18,291 WARN L207 SmtUtils]: Spent 5.53 s on a formula simplification that was a NOOP. DAG size: 25 [2021-11-09 09:12:20,625 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~d~0 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~d~0) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 .cse1)))) is different from false [2021-11-09 09:12:22,963 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~d~0 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~d~0) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 .cse1)))) is different from true [2021-11-09 09:12:23,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-09 09:12:23,022 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:12:23,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59346510] [2021-11-09 09:12:23,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59346510] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:12:23,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:12:23,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-11-09 09:12:23,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104317692] [2021-11-09 09:12:23,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 09:12:23,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:12:23,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 09:12:23,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=84, Unknown=7, NotChecked=84, Total=210 [2021-11-09 09:12:23,026 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-11-09 09:12:27,852 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~d~0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~d~0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (= c_ULTIMATE.start_main_~d~0 .cse0) (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse1 .cse0) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-09 09:12:30,240 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~Input .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_SqrtR_~Input) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (= c_ULTIMATE.start_SqrtR_~Input .cse0) (fp.geq .cse1 .cse0) (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-09 09:12:32,824 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~Input c_ULTIMATE.start_SqrtR_~xn~0) c_ULTIMATE.start_SqrtR_~xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xn~0) c_ULTIMATE.start_SqrtR_~xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (= c_ULTIMATE.start_SqrtR_~Input .cse0) (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.geq .cse1 .cse0) (= c_ULTIMATE.start_SqrtR_~xn~0 .cse0)))) is different from true [2021-11-09 09:12:36,607 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 .cse1) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) .cse1) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)) c_ULTIMATE.start_SqrtR_~xnp1~0)))) is different from true [2021-11-09 09:13:03,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:13:03,326 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2021-11-09 09:13:03,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:13:03,553 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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 11 [2021-11-09 09:13:03,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:13:03,554 INFO L225 Difference]: With dead ends: 26 [2021-11-09 09:13:03,554 INFO L226 Difference]: Without dead ends: 24 [2021-11-09 09:13:03,555 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=56, Invalid=121, Unknown=11, NotChecked=232, Total=420 [2021-11-09 09:13:03,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-09 09:13:03,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2021-11-09 09:13:03,560 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) [2021-11-09 09:13:03,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-11-09 09:13:03,563 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2021-11-09 09:13:03,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:13:03,563 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-11-09 09:13:03,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-11-09 09:13:03,564 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-11-09 09:13:03,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 09:13:03,565 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:13:03,565 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:13:03,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-09 09:13:03,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:13:03,777 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:13:03,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:13:03,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1648833135, now seen corresponding path program 2 times [2021-11-09 09:13:03,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:13:03,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111429235] [2021-11-09 09:13:03,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:13:03,779 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:13:03,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:13:03,781 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:13:03,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 09:13:09,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:13:09,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:13:10,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 09:13:10,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:13:12,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:13:12,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:13:18,126 WARN L207 SmtUtils]: Spent 5.39 s on a formula simplification that was a NOOP. DAG size: 32 [2021-11-09 09:13:23,454 WARN L207 SmtUtils]: Spent 5.33 s on a formula simplification that was a NOOP. DAG size: 31 [2021-11-09 09:13:25,840 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~Input c_ULTIMATE.start_SqrtR_~xn~0) c_ULTIMATE.start_SqrtR_~xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xn~0) c_ULTIMATE.start_SqrtR_~xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse2 c_ULTIMATE.start_SqrtR_~xn~0))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse2 .cse2)))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (not (fp.gt .cse0 .cse1))))) is different from false [2021-11-09 09:13:28,240 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~Input c_ULTIMATE.start_SqrtR_~xn~0) c_ULTIMATE.start_SqrtR_~xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xn~0) c_ULTIMATE.start_SqrtR_~xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse2 c_ULTIMATE.start_SqrtR_~xn~0))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse2 .cse2)))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (not (fp.gt .cse0 .cse1))))) is different from true [2021-11-09 09:13:33,714 WARN L207 SmtUtils]: Spent 5.47 s on a formula simplification that was a NOOP. DAG size: 32 [2021-11-09 09:13:39,060 WARN L207 SmtUtils]: Spent 5.34 s on a formula simplification that was a NOOP. DAG size: 31 [2021-11-09 09:13:50,740 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~Input .cse3) .cse3) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_SqrtR_~Input) .cse3) .cse3))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse2 .cse3))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse2 .cse2)))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (not (fp.gt .cse0 .cse1)))))) is different from false [2021-11-09 09:13:52,957 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~Input .cse3) .cse3) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_SqrtR_~Input) .cse3) .cse3))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse2 .cse3))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse2 .cse2)))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (not (fp.gt .cse0 .cse1)))))) is different from true [2021-11-09 09:14:04,613 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~d~0 .cse3) .cse3) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~d~0) .cse3) .cse3))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse2 .cse3))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse2 .cse2)))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (not (fp.gt .cse0 .cse1)))))) is different from false [2021-11-09 09:14:06,815 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~d~0 .cse3) .cse3) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~d~0) .cse3) .cse3))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse2 .cse3))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse2 .cse2)))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (not (fp.gt .cse0 .cse1)))))) is different from true [2021-11-09 09:14:09,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-09 09:14:09,303 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:14:09,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111429235] [2021-11-09 09:14:09,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111429235] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:14:09,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:14:09,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-09 09:14:09,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602323087] [2021-11-09 09:14:09,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:14:09,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:14:09,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:14:09,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=35, Unknown=6, NotChecked=42, Total=110 [2021-11-09 09:14:09,306 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 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) [2021-11-09 09:14:11,745 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~d~0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~d~0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse1 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse3 .cse0))) (.cse2 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse3 .cse3)))) (and (= c_ULTIMATE.start_main_~d~0 .cse0) (not (fp.lt .cse1 (fp.neg .cse2))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.gt .cse1 .cse2)))))) is different from true [2021-11-09 09:14:14,000 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~Input .cse2) .cse2) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_SqrtR_~Input) .cse2) .cse2))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse3 .cse2))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse3 .cse3)))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (= c_ULTIMATE.start_SqrtR_~Input .cse2) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.gt .cse0 .cse1)))))) is different from false [2021-11-09 09:14:16,229 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~Input .cse2) .cse2) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_SqrtR_~Input) .cse2) .cse2))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse3 .cse2))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse3 .cse3)))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (= c_ULTIMATE.start_SqrtR_~Input .cse2) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.gt .cse0 .cse1)))))) is different from true [2021-11-09 09:14:18,786 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~Input c_ULTIMATE.start_SqrtR_~xn~0) c_ULTIMATE.start_SqrtR_~xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xn~0) c_ULTIMATE.start_SqrtR_~xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse1 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse3 c_ULTIMATE.start_SqrtR_~xn~0))) (.cse2 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse3 .cse3))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= c_ULTIMATE.start_SqrtR_~Input .cse0) (not (fp.lt .cse1 (fp.neg .cse2))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (not (fp.gt .cse1 .cse2)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_SqrtR_~xn~0 .cse0)))) is different from true [2021-11-09 09:15:01,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:15:01,773 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-11-09 09:15:02,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:15:02,184 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 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 [2021-11-09 09:15:02,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:15:02,184 INFO L225 Difference]: With dead ends: 30 [2021-11-09 09:15:02,184 INFO L226 Difference]: Without dead ends: 20 [2021-11-09 09:15:02,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=33, Invalid=37, Unknown=10, NotChecked=102, Total=182 [2021-11-09 09:15:02,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-09 09:15:02,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-09 09:15:02,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 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) [2021-11-09 09:15:02,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-11-09 09:15:02,189 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 12 [2021-11-09 09:15:02,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:15:02,190 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-11-09 09:15:02,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 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) [2021-11-09 09:15:02,191 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-11-09 09:15:02,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-09 09:15:02,192 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:15:02,192 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:15:02,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-09 09:15:02,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:15:02,403 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:15:02,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:15:02,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1471521565, now seen corresponding path program 1 times [2021-11-09 09:15:02,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:15:02,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532190270] [2021-11-09 09:15:02,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:15:02,405 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:15:02,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:15:02,406 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:15:02,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 09:15:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:15:08,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:15:08,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:15:10,442 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:15:10,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:15:17,197 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:15:17,197 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:15:17,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532190270] [2021-11-09 09:15:17,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532190270] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:15:17,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:15:17,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-11-09 09:15:17,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852779213] [2021-11-09 09:15:17,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:15:17,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:15:17,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:15:17,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:15:17,200 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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) [2021-11-09 09:15:33,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:15:33,520 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-11-09 09:15:33,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:15:33,531 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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 19 [2021-11-09 09:15:33,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:15:33,532 INFO L225 Difference]: With dead ends: 33 [2021-11-09 09:15:33,532 INFO L226 Difference]: Without dead ends: 23 [2021-11-09 09:15:33,533 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:15:33,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-09 09:15:33,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-09 09:15:33,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 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) [2021-11-09 09:15:33,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-11-09 09:15:33,539 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 19 [2021-11-09 09:15:33,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:15:33,540 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-11-09 09:15:33,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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) [2021-11-09 09:15:33,540 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-11-09 09:15:33,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-09 09:15:33,541 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:15:33,541 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:15:33,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-09 09:15:33,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:15:33,742 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:15:33,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:15:33,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1048438369, now seen corresponding path program 1 times [2021-11-09 09:15:33,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:15:33,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756172660] [2021-11-09 09:15:33,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:15:33,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:15:33,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:15:33,745 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:15:33,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 09:15:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:15:39,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 09:15:39,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:15:46,889 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:15:46,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:15:57,936 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_21 (_ 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_21))) is different from false [2021-11-09 09:16:00,033 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_21 (_ 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_21))) is different from true [2021-11-09 09:16:05,260 WARN L207 SmtUtils]: Spent 5.22 s on a formula simplification that was a NOOP. DAG size: 13 [2021-11-09 09:16:12,169 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_21 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~Input))) (fp.add c_currentRoundingMode .cse0 .cse0))) v_ULTIMATE.start_SqrtR_~linf~0_21)) (let ((.cse1 (let ((.cse2 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~Input))) (fp.add c_currentRoundingMode .cse2 .cse2)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse1) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse1)))) is different from false [2021-11-09 09:16:14,473 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_21 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~Input))) (fp.add c_currentRoundingMode .cse0 .cse0))) v_ULTIMATE.start_SqrtR_~linf~0_21)) (let ((.cse1 (let ((.cse2 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~Input))) (fp.add c_currentRoundingMode .cse2 .cse2)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse1) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse1)))) is different from true [2021-11-09 09:16:24,281 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 13 [2021-11-09 09:16:26,594 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_main_~d~0))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (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_21 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse2 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_main_~d~0))) (fp.add c_currentRoundingMode .cse2 .cse2))) v_ULTIMATE.start_SqrtR_~linf~0_21))) is different from false [2021-11-09 09:16:28,890 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_main_~d~0))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (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_21 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse2 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_main_~d~0))) (fp.add c_currentRoundingMode .cse2 .cse2))) v_ULTIMATE.start_SqrtR_~linf~0_21))) is different from true [2021-11-09 09:16:34,068 WARN L207 SmtUtils]: Spent 5.17 s on a formula simplification that was a NOOP. DAG size: 14 [2021-11-09 09:16:41,023 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_21 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.div c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~d~0 .cse1))))) (fp.add c_currentRoundingMode .cse0 .cse0))) v_ULTIMATE.start_SqrtR_~linf~0_21)) (let ((.cse2 (let ((.cse3 (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.div c_currentRoundingMode .cse4 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~d~0 .cse4))))) (fp.add c_currentRoundingMode .cse3 .cse3)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse2) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse2)))) is different from false [2021-11-09 09:16:43,345 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_21 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.div c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~d~0 .cse1))))) (fp.add c_currentRoundingMode .cse0 .cse0))) v_ULTIMATE.start_SqrtR_~linf~0_21)) (let ((.cse2 (let ((.cse3 (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.div c_currentRoundingMode .cse4 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~d~0 .cse4))))) (fp.add c_currentRoundingMode .cse3 .cse3)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse2) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse2)))) is different from true [2021-11-09 09:16:48,565 WARN L207 SmtUtils]: Spent 5.21 s on a formula simplification that was a NOOP. DAG size: 14 [2021-11-09 09:16:58,429 WARN L207 SmtUtils]: Spent 5.21 s on a formula simplification that was a NOOP. DAG size: 14 [2021-11-09 09:17:08,334 WARN L207 SmtUtils]: Spent 5.24 s on a formula simplification that was a NOOP. DAG size: 14 [2021-11-09 09:17:18,457 WARN L207 SmtUtils]: Spent 5.40 s on a formula simplification that was a NOOP. DAG size: 14 [2021-11-09 09:17:28,565 WARN L207 SmtUtils]: Spent 5.38 s on a formula simplification that was a NOOP. DAG size: 14 [2021-11-09 09:17:38,762 WARN L207 SmtUtils]: Spent 5.47 s on a formula simplification that was a NOOP. DAG size: 14 [2021-11-09 09:17:48,865 WARN L207 SmtUtils]: Spent 5.40 s on a formula simplification that was a NOOP. DAG size: 14 [2021-11-09 09:17:59,069 WARN L207 SmtUtils]: Spent 5.43 s on a formula simplification that was a NOOP. DAG size: 14 [2021-11-09 09:18:35,815 WARN L207 SmtUtils]: Spent 9.41 s on a formula simplification that was a NOOP. DAG size: 17 [2021-11-09 09:18:35,816 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2021-11-09 09:18:35,816 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:18:35,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756172660] [2021-11-09 09:18:35,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756172660] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:18:35,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:18:35,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-09 09:18:35,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682534167] [2021-11-09 09:18:35,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 09:18:35,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:18:35,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 09:18:35,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=57, Unknown=14, NotChecked=76, Total=182 [2021-11-09 09:18:35,819 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 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) [2021-11-09 09:18:40,766 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= c_ULTIMATE.start_main_~d~0 .cse0) (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_21 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse1 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.div c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~d~0 .cse2))))) (fp.add c_currentRoundingMode .cse1 .cse1))) v_ULTIMATE.start_SqrtR_~linf~0_21)) (let ((.cse3 (let ((.cse4 (fp.div c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~d~0 .cse0)))) (fp.add c_currentRoundingMode .cse4 .cse4)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse3) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse3)))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-09 09:18:43,142 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (or (let ((.cse0 (let ((.cse1 (fp.div c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~d~0))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (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_21 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse3 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_main_~d~0))) (fp.add c_currentRoundingMode .cse3 .cse3))) v_ULTIMATE.start_SqrtR_~linf~0_21))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= c_ULTIMATE.start_main_~d~0 (fp.add c_currentRoundingMode .cse2 .cse2)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-09 09:18:45,545 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= c_ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 .cse0)) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_21 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~Input))) (fp.add c_currentRoundingMode .cse1 .cse1))) v_ULTIMATE.start_SqrtR_~linf~0_21)) (let ((.cse2 (let ((.cse3 (fp.div c_currentRoundingMode .cse0 c_ULTIMATE.start_SqrtR_~Input))) (fp.add c_currentRoundingMode .cse3 .cse3)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse2) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse2)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-09 09:18:47,663 WARN L860 $PredicateComparison]: unable to prove that (and (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= c_ULTIMATE.start_SqrtR_~xn~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.div c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode .cse0 .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (or (let ((.cse1 (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) .cse1) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse1))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_21 (_ 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_21)))) is different from true [2021-11-09 09:19:21,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:21,333 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-11-09 09:19:21,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:19:21,431 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 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 19 [2021-11-09 09:19:21,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:21,432 INFO L225 Difference]: With dead ends: 35 [2021-11-09 09:19:21,432 INFO L226 Difference]: Without dead ends: 25 [2021-11-09 09:19:21,433 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 61.2s TimeCoverageRelationStatistics Valid=43, Invalid=61, Unknown=18, NotChecked=184, Total=306 [2021-11-09 09:19:21,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-09 09:19:21,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-09 09:19:21,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 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) [2021-11-09 09:19:21,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-11-09 09:19:21,440 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 19 [2021-11-09 09:19:21,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:21,440 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-11-09 09:19:21,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 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) [2021-11-09 09:19:21,440 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-11-09 09:19:21,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-09 09:19:21,441 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:21,441 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:21,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:21,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:19:21,642 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:19:21,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:21,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1909803615, now seen corresponding path program 2 times [2021-11-09 09:19:21,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:19:21,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510021681] [2021-11-09 09:19:21,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:19:21,644 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:19:21,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:19:21,645 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:19:21,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 09:19:29,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:19:29,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:19:29,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 09:19:29,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:40,305 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= c_ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.div c_currentRoundingMode .cse0 c_ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xn~0))) is different from false [2021-11-09 09:19:42,740 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= c_ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.div c_currentRoundingMode .cse0 c_ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xn~0))) is different from true [2021-11-09 09:20:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2021-11-09 09:20:03,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:20:16,742 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 .cse1)))) is different from false [2021-11-09 09:20:18,959 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 .cse1)))) is different from true [2021-11-09 09:20:34,677 WARN L207 SmtUtils]: Spent 6.00 s on a formula simplification that was a NOOP. DAG size: 28 [2021-11-09 09:20:40,697 WARN L207 SmtUtils]: Spent 6.02 s on a formula simplification that was a NOOP. DAG size: 26 [2021-11-09 09:20:43,260 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~Input c_ULTIMATE.start_SqrtR_~xn~0) c_ULTIMATE.start_SqrtR_~xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xn~0) c_ULTIMATE.start_SqrtR_~xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 .cse1)))) is different from false [2021-11-09 09:20:45,813 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_SqrtR_~Input c_ULTIMATE.start_SqrtR_~xn~0) c_ULTIMATE.start_SqrtR_~xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xn~0) c_ULTIMATE.start_SqrtR_~xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 .cse1)))) is different from true [2021-11-09 09:20:47,086 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-09 09:20:47,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:20:47,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510021681] [2021-11-09 09:20:47,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/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") [2021-11-09 09:20:47,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [94807185] [2021-11-09 09:20:47,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:20:47,088 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-09 09:20:47,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/cvc4 [2021-11-09 09:20:47,094 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-09 09:20:47,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-09 09:20:47,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-09 09:21:06,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:21:06,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:21:06,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-09 09:21:06,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:21:06,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-09 09:21:06,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485490526] [2021-11-09 09:21:06,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:21:06,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:21:06,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:21:06,317 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:21:06,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_335e60f4-43c4-4052-adad-292633a369b9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process