./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e0a18ef05fc68655f6745bf4a502e0079c3ee8f2ad8ce0a20fedaec28a3ae221 ..................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e0a18ef05fc68655f6745bf4a502e0079c3ee8f2ad8ce0a20fedaec28a3ae221 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:08:52,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:08:52,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:08:52,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:08:52,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:08:52,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:08:52,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:08:52,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:08:52,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:08:52,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:08:52,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:08:52,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:08:52,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:08:52,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:08:52,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:08:52,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:08:52,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:08:52,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:08:52,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:08:52,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:08:52,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:08:52,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:08:52,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:08:52,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:08:52,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:08:52,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:08:52,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:08:52,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:08:52,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:08:52,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:08:52,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:08:52,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:08:52,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:08:52,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:08:52,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:08:52,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:08:52,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:08:52,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:08:52,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:08:52,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:08:52,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:08:52,993 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:08:53,047 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:08:53,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:08:53,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:08:53,049 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:08:53,050 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:08:53,050 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:08:53,050 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:08:53,051 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:08:53,058 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:08:53,058 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:08:53,060 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:08:53,060 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:08:53,060 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:08:53,061 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:08:53,061 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:08:53,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:08:53,062 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:08:53,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:08:53,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:08:53,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:08:53,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:08:53,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:08:53,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:08:53,064 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:08:53,064 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:08:53,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:08:53,065 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:08:53,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:08:53,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:08:53,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:08:53,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:08:53,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:08:53,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:08:53,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:08:53,069 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:08:53,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:08:53,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:08:53,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:08:53,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:08:53,071 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0a18ef05fc68655f6745bf4a502e0079c3ee8f2ad8ce0a20fedaec28a3ae221 [2021-10-29 05:08:53,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:08:53,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:08:53,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:08:53,423 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:08:53,424 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:08:53,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2021-10-29 05:08:53,527 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/data/164a5a4a4/9cbd1cb2d481447ba30ad8147c0ca68c/FLAG5cd3ea8bc [2021-10-29 05:08:54,106 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:08:54,112 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2021-10-29 05:08:54,121 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/data/164a5a4a4/9cbd1cb2d481447ba30ad8147c0ca68c/FLAG5cd3ea8bc [2021-10-29 05:08:54,428 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/data/164a5a4a4/9cbd1cb2d481447ba30ad8147c0ca68c [2021-10-29 05:08:54,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:08:54,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:08:54,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:08:54,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:08:54,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:08:54,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:08:54" (1/1) ... [2021-10-29 05:08:54,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2432864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:54, skipping insertion in model container [2021-10-29 05:08:54,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:08:54" (1/1) ... [2021-10-29 05:08:54,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:08:54,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:08:54,659 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_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c[855,868] [2021-10-29 05:08:54,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:08:54,703 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:08:54,717 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_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c[855,868] [2021-10-29 05:08:54,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:08:54,743 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:08:54,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:54 WrapperNode [2021-10-29 05:08:54,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:08:54,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:08:54,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:08:54,746 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:08:54,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:54" (1/1) ... [2021-10-29 05:08:54,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:54" (1/1) ... [2021-10-29 05:08:54,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:08:54,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:08:54,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:08:54,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:08:54,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:54" (1/1) ... [2021-10-29 05:08:54,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:54" (1/1) ... [2021-10-29 05:08:54,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:54" (1/1) ... [2021-10-29 05:08:54,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:54" (1/1) ... [2021-10-29 05:08:54,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:54" (1/1) ... [2021-10-29 05:08:54,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:54" (1/1) ... [2021-10-29 05:08:54,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:54" (1/1) ... [2021-10-29 05:08:54,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:08:54,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:08:54,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:08:54,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:08:54,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:54" (1/1) ... [2021-10-29 05:08:54,829 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:08:54,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:08:54,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:08:54,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:08:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:08:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:08:54,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:08:54,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:08:55,249 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:08:55,250 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-29 05:08:55,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:08:55 BoogieIcfgContainer [2021-10-29 05:08:55,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:08:55,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:08:55,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:08:55,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:08:55,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:08:54" (1/3) ... [2021-10-29 05:08:55,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e56b0b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:08:55, skipping insertion in model container [2021-10-29 05:08:55,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:54" (2/3) ... [2021-10-29 05:08:55,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e56b0b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:08:55, skipping insertion in model container [2021-10-29 05:08:55,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:08:55" (3/3) ... [2021-10-29 05:08:55,263 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant.c [2021-10-29 05:08:55,269 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:08:55,269 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:08:55,326 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:08:55,333 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:08:55,334 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:08:55,350 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:55,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 05:08:55,356 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:55,357 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 05:08:55,358 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:08:55,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:55,365 INFO L85 PathProgramCache]: Analyzing trace with hash 87119840, now seen corresponding path program 1 times [2021-10-29 05:08:55,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:08:55,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746752193] [2021-10-29 05:08:55,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:55,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:08:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:08:55,554 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:08:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:08:55,688 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:08:55,691 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:08:55,692 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:08:55,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:08:55,700 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:08:55,713 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:08:55,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:08:55 BoogieIcfgContainer [2021-10-29 05:08:55,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:08:55,763 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:08:55,763 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:08:55,763 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:08:55,764 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:08:55" (3/4) ... [2021-10-29 05:08:55,770 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:08:55,770 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:08:55,777 INFO L168 Benchmark]: Toolchain (without parser) took 1340.77 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 66.9 MB in the beginning and 104.0 MB in the end (delta: -37.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:08:55,778 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory is still 52.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:08:55,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.18 ms. Allocated memory is still 100.7 MB. Free memory was 66.7 MB in the beginning and 74.8 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:55,781 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.96 ms. Allocated memory is still 100.7 MB. Free memory was 74.8 MB in the beginning and 73.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:08:55,783 INFO L168 Benchmark]: Boogie Preprocessor took 29.35 ms. Allocated memory is still 100.7 MB. Free memory was 73.2 MB in the beginning and 72.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:55,784 INFO L168 Benchmark]: RCFGBuilder took 434.33 ms. Allocated memory is still 100.7 MB. Free memory was 72.0 MB in the beginning and 58.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:55,790 INFO L168 Benchmark]: TraceAbstraction took 497.42 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 58.5 MB in the beginning and 104.6 MB in the end (delta: -46.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:55,792 INFO L168 Benchmark]: Witness Printer took 8.54 ms. Allocated memory is still 130.0 MB. Free memory was 104.6 MB in the beginning and 104.0 MB in the end (delta: 628.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:08:55,799 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 100.7 MB. Free memory is still 52.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.18 ms. Allocated memory is still 100.7 MB. Free memory was 66.7 MB in the beginning and 74.8 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.96 ms. Allocated memory is still 100.7 MB. Free memory was 74.8 MB in the beginning and 73.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.35 ms. Allocated memory is still 100.7 MB. Free memory was 73.2 MB in the beginning and 72.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 434.33 ms. Allocated memory is still 100.7 MB. Free memory was 72.0 MB in the beginning and 58.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 497.42 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 58.5 MB in the beginning and 104.6 MB in the end (delta: -46.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. * Witness Printer took 8.54 ms. Allocated memory is still 130.0 MB. Free memory was 104.6 MB in the beginning and 104.0 MB in the end (delta: 628.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of someUnaryDOUBLEoperation at line 32, overapproximation of someBinaryDOUBLEComparisonOperation at line 59. Possible FailurePath: [L22] double _EPS = 1e-6; [L49] double d, dd, r; [L50] double epsilon = 1e-8; [L52] d = 1. VAL [_EPS=1/1000000] [L52] COND TRUE d <= 20. [L54] dd = __VERIFIER_nondet_double() [L18] COND FALSE !(!cond) [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; [L28] COND FALSE !(Input <= 1.0) [L28] xn = 1.0/Input [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 VAL [_EPS=1/1000000] [L35] COND FALSE !(\read(cond)) [L44] return 1.0 / xnp1; [L57] r = SqrtR(dd) [L20] COND TRUE !(cond) VAL [_EPS=1/1000000] [L20] reach_error() VAL [_EPS=1/1000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 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=8occurred 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, 5 NumberOfCodeBlocks, 5 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 [2021-10-29 05:08:55,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:08:58,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:08:58,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:08:58,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:08:58,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:08:58,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:08:58,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:08:58,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:08:58,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:08:58,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:08:58,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:08:58,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:08:58,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:08:58,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:08:58,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:08:58,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:08:58,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:08:58,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:08:58,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:08:58,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:08:58,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:08:58,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:08:58,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:08:58,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:08:58,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:08:58,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:08:58,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:08:58,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:08:58,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:08:58,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:08:58,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:08:58,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:08:58,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:08:58,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:08:58,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:08:58,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:08:58,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:08:58,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:08:58,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:08:58,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:08:58,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:08:58,885 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:08:58,922 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:08:58,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:08:58,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:08:58,924 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:08:58,924 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:08:58,924 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:08:58,924 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:08:58,925 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:08:58,925 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:08:58,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:08:58,926 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:08:58,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:08:58,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:08:58,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:08:58,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:08:58,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:08:58,927 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:08:58,928 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:08:58,928 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:08:58,928 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:08:58,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:08:58,929 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:08:58,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:08:58,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:08:58,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:08:58,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:08:58,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:08:58,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:08:58,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:08:58,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:08:58,931 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:08:58,931 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:08:58,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:08:58,932 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:08:58,932 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:08:58,932 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_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0a18ef05fc68655f6745bf4a502e0079c3ee8f2ad8ce0a20fedaec28a3ae221 [2021-10-29 05:08:59,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:08:59,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:08:59,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:08:59,393 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:08:59,393 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:08:59,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2021-10-29 05:08:59,481 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/data/8ba7b9644/6585a330388c405488df2d7a2a02b5f1/FLAGe5d0ea6b2 [2021-10-29 05:09:00,183 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:09:00,184 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2021-10-29 05:09:00,193 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/data/8ba7b9644/6585a330388c405488df2d7a2a02b5f1/FLAGe5d0ea6b2 [2021-10-29 05:09:00,538 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/data/8ba7b9644/6585a330388c405488df2d7a2a02b5f1 [2021-10-29 05:09:00,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:09:00,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:09:00,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:09:00,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:09:00,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:09:00,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:09:00" (1/1) ... [2021-10-29 05:09:00,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13c5dc25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:00, skipping insertion in model container [2021-10-29 05:09:00,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:09:00" (1/1) ... [2021-10-29 05:09:00,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:09:00,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:09:00,826 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_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c[855,868] [2021-10-29 05:09:00,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:09:00,902 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:09:00,937 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_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c[855,868] [2021-10-29 05:09:00,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:09:00,966 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:09:00,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:00 WrapperNode [2021-10-29 05:09:00,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:09:00,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:09:00,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:09:00,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:09:00,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:00" (1/1) ... [2021-10-29 05:09:00,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:00" (1/1) ... [2021-10-29 05:09:01,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:09:01,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:09:01,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:09:01,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:09:01,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:00" (1/1) ... [2021-10-29 05:09:01,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:00" (1/1) ... [2021-10-29 05:09:01,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:00" (1/1) ... [2021-10-29 05:09:01,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:00" (1/1) ... [2021-10-29 05:09:01,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:00" (1/1) ... [2021-10-29 05:09:01,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:00" (1/1) ... [2021-10-29 05:09:01,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:00" (1/1) ... [2021-10-29 05:09:01,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:09:01,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:09:01,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:09:01,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:09:01,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:00" (1/1) ... [2021-10-29 05:09:01,101 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:09:01,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:09:01,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:09:01,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:09:01,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:09:01,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:09:01,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:09:01,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:09:10,327 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:09:10,328 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-29 05:09:10,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:09:10 BoogieIcfgContainer [2021-10-29 05:09:10,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:09:10,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:09:10,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:09:10,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:09:10,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:09:00" (1/3) ... [2021-10-29 05:09:10,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d2dbcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:09:10, skipping insertion in model container [2021-10-29 05:09:10,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:00" (2/3) ... [2021-10-29 05:09:10,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d2dbcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:09:10, skipping insertion in model container [2021-10-29 05:09:10,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:09:10" (3/3) ... [2021-10-29 05:09:10,341 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant.c [2021-10-29 05:09:10,348 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:09:10,348 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:09:10,408 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:09:10,417 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:09:10,417 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:09:10,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:09:10,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:09:10,440 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:09:10,441 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:09:10,442 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:09:10,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:09:10,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2021-10-29 05:09:10,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:09:10,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971636878] [2021-10-29 05:09:10,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:09:10,466 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:09:10,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:09:10,467 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:09:10,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:09:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:09:12,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:09:12,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:09:12,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:09:12,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:09:12,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:09:12,438 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:09:12,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971636878] [2021-10-29 05:09:12,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971636878] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:09:12,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:09:12,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:09:12,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077969953] [2021-10-29 05:09:12,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:09:12,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:09:12,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:09:12,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:09:12,468 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:09:12,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:09:12,485 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2021-10-29 05:09:12,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:09:12,487 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-29 05:09:12,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:09:12,497 INFO L225 Difference]: With dead ends: 34 [2021-10-29 05:09:12,497 INFO L226 Difference]: Without dead ends: 14 [2021-10-29 05:09:12,500 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:09:12,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-29 05:09:12,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-29 05:09:12,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:09:12,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-29 05:09:12,534 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-10-29 05:09:12,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:09:12,534 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-29 05:09:12,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:09:12,535 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-29 05:09:12,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:09:12,535 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:09:12,535 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:09:12,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:09:12,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:09:12,736 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:09:12,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:09:12,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2021-10-29 05:09:12,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:09:12,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195306279] [2021-10-29 05:09:12,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:09:12,740 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:09:12,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:09:12,751 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:09:12,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:09:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:09:14,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 05:09:14,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:09:15,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:09:15,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:09:26,341 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5))) is different from false [2021-10-29 05:09:28,415 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5))) is different from true [2021-10-29 05:09:52,767 WARN L207 SmtUtils]: Spent 7.31 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:10:08,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:10:08,196 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:10:08,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195306279] [2021-10-29 05:10:08,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195306279] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:10:08,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:10:08,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-29 05:10:08,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536616085] [2021-10-29 05:10:08,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:10:08,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:10:08,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:10:08,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=26, Unknown=3, NotChecked=10, Total=56 [2021-10-29 05:10:08,202 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:10:11,567 WARN L860 $PredicateComparison]: unable to prove that (and (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (or (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_SqrtR_~xn~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-10-29 05:10:37,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:10:37,618 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2021-10-29 05:10:37,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:10:37,701 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-29 05:10:37,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:10:37,701 INFO L225 Difference]: With dead ends: 32 [2021-10-29 05:10:37,702 INFO L226 Difference]: Without dead ends: 20 [2021-10-29 05:10:37,703 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=19, Invalid=27, Unknown=4, NotChecked=22, Total=72 [2021-10-29 05:10:37,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-29 05:10:37,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-29 05:10:37,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:10:37,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-10-29 05:10:37,708 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2021-10-29 05:10:37,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:10:37,709 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-10-29 05:10:37,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:10:37,710 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-10-29 05:10:37,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:10:37,710 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:10:37,711 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:10:37,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-29 05:10:37,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:10:37,924 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:10:37,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:10:37,925 INFO L85 PathProgramCache]: Analyzing trace with hash -274400360, now seen corresponding path program 1 times [2021-10-29 05:10:37,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:10:37,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435002743] [2021-10-29 05:10:37,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:10:37,926 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:10:37,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:10:37,927 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:10:37,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:10:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:10:41,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-29 05:10:41,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:11:29,313 WARN L207 SmtUtils]: Spent 10.77 s on a formula simplification that was a NOOP. DAG size: 22 [2021-10-29 05:12:08,314 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2) (fp.mul c_currentRoundingMode .cse1 .cse2))))) (or (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (not .cse0) (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32))) (and (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv1 32)) (or (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0)) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse3 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse3)))))) is different from false [2021-10-29 05:12:10,387 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2) (fp.mul c_currentRoundingMode .cse1 .cse2))))) (or (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (not .cse0) (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32))) (and (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv1 32)) (or (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0)) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse3 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse3)))))) is different from true [2021-10-29 05:12:39,469 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse1 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse0) .cse1) (fp.mul c_currentRoundingMode .cse0 .cse1)))) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse2 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse2)))))) is different from false [2021-10-29 05:12:41,557 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse1 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse0) .cse1) (fp.mul c_currentRoundingMode .cse0 .cse1)))) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse2 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse2)))))) is different from true [2021-10-29 05:12:47,553 WARN L207 SmtUtils]: Spent 5.97 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:12:53,381 WARN L207 SmtUtils]: Spent 5.83 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-29 05:12:59,270 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:13:05,177 WARN L207 SmtUtils]: Spent 5.91 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:13:11,047 WARN L207 SmtUtils]: Spent 5.87 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-29 05:13:16,442 WARN L207 SmtUtils]: Spent 5.39 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-29 05:13:18,962 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse4 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse3 (fp.add c_currentRoundingMode .cse4 .cse4))) (let ((.cse1 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse2) .cse3))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (not (fp.gt .cse1 (fp.mul c_currentRoundingMode .cse2 .cse3))) (not (fp.lt .cse1 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (= |c_ULTIMATE.start_SqrtR_#res| (fp.div c_currentRoundingMode .cse0 .cse4)))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 05:13:24,939 WARN L207 SmtUtils]: Spent 5.90 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:13:33,303 WARN L207 SmtUtils]: Spent 5.88 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:13:39,223 WARN L207 SmtUtils]: Spent 5.92 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:13:45,160 WARN L207 SmtUtils]: Spent 5.94 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-29 05:13:51,019 WARN L207 SmtUtils]: Spent 5.86 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:13:56,914 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-29 05:14:02,778 WARN L207 SmtUtils]: Spent 5.86 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-29 05:14:08,629 WARN L207 SmtUtils]: Spent 5.85 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-29 05:14:16,997 WARN L207 SmtUtils]: Spent 5.88 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:14:25,379 WARN L207 SmtUtils]: Spent 5.91 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:14:31,254 WARN L207 SmtUtils]: Spent 5.87 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:14:37,220 WARN L207 SmtUtils]: Spent 5.96 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-29 05:14:43,137 WARN L207 SmtUtils]: Spent 5.92 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:14:48,651 WARN L207 SmtUtils]: Spent 5.51 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-29 05:14:54,580 WARN L207 SmtUtils]: Spent 5.93 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-29 05:15:02,971 WARN L207 SmtUtils]: Spent 5.91 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:15:08,810 WARN L207 SmtUtils]: Spent 5.84 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:15:14,749 WARN L207 SmtUtils]: Spent 5.94 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-29 05:15:20,635 WARN L207 SmtUtils]: Spent 5.88 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:15:26,156 WARN L207 SmtUtils]: Spent 5.52 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-29 05:15:32,127 WARN L207 SmtUtils]: Spent 5.97 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-29 05:15:37,978 WARN L207 SmtUtils]: Spent 5.85 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:15:43,720 WARN L207 SmtUtils]: Spent 5.74 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-29 05:15:49,564 WARN L207 SmtUtils]: Spent 5.84 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:15:55,409 WARN L207 SmtUtils]: Spent 5.84 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-29 05:16:01,289 WARN L207 SmtUtils]: Spent 5.88 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-29 05:16:07,211 WARN L207 SmtUtils]: Spent 5.92 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-29 05:16:13,118 WARN L207 SmtUtils]: Spent 5.86 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:16:18,959 WARN L207 SmtUtils]: Spent 5.84 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-29 05:16:24,850 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:16:30,743 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-29 05:16:36,599 WARN L207 SmtUtils]: Spent 5.85 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-29 05:16:42,430 WARN L207 SmtUtils]: Spent 5.83 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-29 05:16:48,340 WARN L207 SmtUtils]: Spent 5.91 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-29 05:16:54,327 WARN L207 SmtUtils]: Spent 5.99 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-29 05:17:00,334 WARN L207 SmtUtils]: Spent 6.01 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-29 05:17:06,367 WARN L207 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-29 05:17:08,873 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse7 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse7 .cse7))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (let ((.cse6 (fp.div roundNearestTiesToEven .cse1 .cse7))) (let ((.cse4 (fp.geq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (.cse5 (fp.leq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse4) (not .cse5))) (and .cse4 .cse5 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)))))))) is different from false [2021-10-29 05:17:11,188 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse7 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse7 .cse7))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (let ((.cse6 (fp.div roundNearestTiesToEven .cse1 .cse7))) (let ((.cse4 (fp.geq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (.cse5 (fp.leq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse4) (not .cse5))) (and .cse4 .cse5 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)))))))) is different from true [2021-10-29 05:17:19,692 WARN L207 SmtUtils]: Spent 6.00 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:17:28,090 WARN L207 SmtUtils]: Spent 5.91 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:17:33,924 WARN L207 SmtUtils]: Spent 5.83 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:17:39,869 WARN L207 SmtUtils]: Spent 5.94 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-29 05:17:45,687 WARN L207 SmtUtils]: Spent 5.82 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:17:51,097 WARN L207 SmtUtils]: Spent 5.41 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-29 05:17:52,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-29 05:17:52,423 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-29 05:17:52,425 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:17:52,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435002743] [2021-10-29 05:17:52,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-29 05:17:52,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [344902756] [2021-10-29 05:17:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:52,426 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 05:17:52,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 05:17:52,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 05:17:52,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-29 05:17:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:17:57,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-29 05:17:57,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:17:57,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-29 05:17:57,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044698113] [2021-10-29 05:17:57,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:57,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:17:57,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:17:57,868 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:17:57,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 05:19:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:19:08,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-29 05:19:08,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:19:08,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-29 05:19:08,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:19:08,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-29 05:19:08,984 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-29 05:19:08,984 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-29 05:19:08,998 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:19:09,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:19:09,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-10-29 05:19:09,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:19:09,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd7dbbe-94d8-47b3-9694-8ee91ec66ec8/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:19:09,617 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-29 05:19:09,619 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:19:09,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:19:09 BoogieIcfgContainer [2021-10-29 05:19:09,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:19:09,632 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:19:09,632 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:19:09,632 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:19:09,633 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:09:10" (3/4) ... [2021-10-29 05:19:09,651 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:19:09,651 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:19:09,653 INFO L168 Benchmark]: Toolchain (without parser) took 609109.27 ms. Allocated memory was 56.6 MB in the beginning and 79.7 MB in the end (delta: 23.1 MB). Free memory was 34.8 MB in the beginning and 31.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:19:09,653 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 56.6 MB. Free memory is still 37.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:19:09,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 422.73 ms. Allocated memory is still 56.6 MB. Free memory was 34.6 MB in the beginning and 39.0 MB in the end (delta: -4.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:19:09,657 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.91 ms. Allocated memory is still 56.6 MB. Free memory was 39.0 MB in the beginning and 37.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:19:09,658 INFO L168 Benchmark]: Boogie Preprocessor took 64.53 ms. Allocated memory is still 56.6 MB. Free memory was 37.3 MB in the beginning and 36.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:19:09,662 INFO L168 Benchmark]: RCFGBuilder took 9239.69 ms. Allocated memory was 56.6 MB in the beginning and 79.7 MB in the end (delta: 23.1 MB). Free memory was 36.0 MB in the beginning and 61.3 MB in the end (delta: -25.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:19:09,665 INFO L168 Benchmark]: TraceAbstraction took 599298.53 ms. Allocated memory is still 79.7 MB. Free memory was 61.0 MB in the beginning and 31.8 MB in the end (delta: 29.2 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:19:09,668 INFO L168 Benchmark]: Witness Printer took 19.04 ms. Allocated memory is still 79.7 MB. Free memory was 31.8 MB in the beginning and 31.7 MB in the end (delta: 75.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:19:09,672 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 56.6 MB. Free memory is still 37.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 422.73 ms. Allocated memory is still 56.6 MB. Free memory was 34.6 MB in the beginning and 39.0 MB in the end (delta: -4.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.91 ms. Allocated memory is still 56.6 MB. Free memory was 39.0 MB in the beginning and 37.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.53 ms. Allocated memory is still 56.6 MB. Free memory was 37.3 MB in the beginning and 36.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 9239.69 ms. Allocated memory was 56.6 MB in the beginning and 79.7 MB in the end (delta: 23.1 MB). Free memory was 36.0 MB in the beginning and 61.3 MB in the end (delta: -25.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 599298.53 ms. Allocated memory is still 79.7 MB. Free memory was 61.0 MB in the beginning and 31.8 MB in the end (delta: 29.2 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. * Witness Printer took 19.04 ms. Allocated memory is still 79.7 MB. Free memory was 31.8 MB in the beginning and 31.7 MB in the end (delta: 75.9 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: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] double _EPS = 1e-6; [L49] double d, dd, r; [L50] double epsilon = 1e-8; [L52] d = 1. [L52] COND TRUE d <= 20. [L54] dd = __VERIFIER_nondet_double() [L18] COND FALSE !(!cond) [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; [L28] COND FALSE !(Input <= 1.0) [L28] xn = 1.0/Input [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 [L35] COND FALSE !(\read(cond)) [L44] return 1.0 / xnp1; [L57] r = SqrtR(dd) [L20] COND TRUE !(cond) [L20] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 599.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 29.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 1 SDslu, 29 SDs, 0 SdLazy, 22 SolverSat, 0 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 26.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 23.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 6.5s SatisfiabilityAnalysisTime, 485.2s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 44 ConstructedInterpolants, 6 QuantifiedInterpolants, 372 SizeOfPredicates, 7 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...