./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH --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 3bb1d9e312234d5c4f7ead2dcb51cc43e4ff3aebeffef1b0758f6a0d5be2ea9b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:31:28,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:31:28,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:31:28,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:31:28,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:31:28,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:31:28,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:31:28,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:31:28,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:31:28,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:31:28,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:31:28,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:31:28,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:31:28,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:31:28,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:31:28,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:31:28,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:31:28,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:31:28,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:31:28,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:31:28,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:31:28,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:31:28,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:31:28,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:31:28,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:31:28,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:31:28,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:31:28,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:31:28,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:31:28,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:31:28,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:31:28,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:31:28,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:31:28,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:31:28,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:31:28,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:31:28,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:31:28,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:31:28,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:31:28,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:31:28,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:31:28,164 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:31:28,219 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:31:28,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:31:28,221 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:31:28,221 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:31:28,221 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:31:28,221 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:31:28,222 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:31:28,222 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:31:28,228 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:31:28,228 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:31:28,229 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:31:28,229 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:31:28,230 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:31:28,230 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:31:28,230 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:31:28,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:31:28,231 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:31:28,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:31:28,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:31:28,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:31:28,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:31:28,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:31:28,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:31:28,232 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:31:28,233 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:31:28,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:31:28,233 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:31:28,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:31:28,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:31:28,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:31:28,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:31:28,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:31:28,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:31:28,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:31:28,236 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:31:28,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:31:28,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:31:28,237 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:31:28,237 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:31:28,237 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_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bb1d9e312234d5c4f7ead2dcb51cc43e4ff3aebeffef1b0758f6a0d5be2ea9b [2021-11-03 05:31:28,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:31:28,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:31:28,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:31:28,545 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:31:28,547 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:31:28,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c [2021-11-03 05:31:28,621 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/data/f14c0844a/9a0d04c15eb34b81a11a67e81efc528d/FLAGce29b6d2e [2021-11-03 05:31:29,039 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:31:29,040 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c [2021-11-03 05:31:29,051 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/data/f14c0844a/9a0d04c15eb34b81a11a67e81efc528d/FLAGce29b6d2e [2021-11-03 05:31:29,433 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/data/f14c0844a/9a0d04c15eb34b81a11a67e81efc528d [2021-11-03 05:31:29,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:31:29,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:31:29,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:31:29,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:31:29,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:31:29,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:31:29" (1/1) ... [2021-11-03 05:31:29,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da63bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:29, skipping insertion in model container [2021-11-03 05:31:29,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:31:29" (1/1) ... [2021-11-03 05:31:29,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:31:29,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:31:29,610 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_15c1ec71-d2d8-4d18-8691-589255f6da59/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c[831,844] [2021-11-03 05:31:29,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:31:29,666 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:31:29,704 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_15c1ec71-d2d8-4d18-8691-589255f6da59/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c[831,844] [2021-11-03 05:31:29,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:31:29,723 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:31:29,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:29 WrapperNode [2021-11-03 05:31:29,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:31:29,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:31:29,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:31:29,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:31:29,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:29" (1/1) ... [2021-11-03 05:31:29,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:29" (1/1) ... [2021-11-03 05:31:29,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:31:29,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:31:29,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:31:29,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:31:29,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:29" (1/1) ... [2021-11-03 05:31:29,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:29" (1/1) ... [2021-11-03 05:31:29,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:29" (1/1) ... [2021-11-03 05:31:29,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:29" (1/1) ... [2021-11-03 05:31:29,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:29" (1/1) ... [2021-11-03 05:31:29,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:29" (1/1) ... [2021-11-03 05:31:29,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:29" (1/1) ... [2021-11-03 05:31:29,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:31:29,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:31:29,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:31:29,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:31:29,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:29" (1/1) ... [2021-11-03 05:31:29,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:31:29,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:31:29,813 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:31:29,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:31:29,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:31:29,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:31:29,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:31:29,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:31:30,195 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:31:30,195 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-03 05:31:30,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:31:30 BoogieIcfgContainer [2021-11-03 05:31:30,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:31:30,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:31:30,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:31:30,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:31:30,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:31:29" (1/3) ... [2021-11-03 05:31:30,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a29736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:31:30, skipping insertion in model container [2021-11-03 05:31:30,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:29" (2/3) ... [2021-11-03 05:31:30,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a29736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:31:30, skipping insertion in model container [2021-11-03 05:31:30,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:31:30" (3/3) ... [2021-11-03 05:31:30,206 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_interval.c [2021-11-03 05:31:30,211 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:31:30,212 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 05:31:30,259 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:31:30,279 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 [2021-11-03 05:31:30,279 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 05:31:30,294 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:30,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 05:31:30,299 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:31:30,299 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 05:31:30,300 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:31:30,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:31:30,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2617893, now seen corresponding path program 1 times [2021-11-03 05:31:30,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:31:30,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814845154] [2021-11-03 05:31:30,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:31:30,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:31:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 05:31:30,467 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 05:31:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 05:31:30,562 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 05:31:30,564 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 05:31:30,565 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:31:30,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:31:30,570 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-03 05:31:30,573 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:31:30,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:31:30 BoogieIcfgContainer [2021-11-03 05:31:30,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:31:30,599 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:31:30,599 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:31:30,599 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:31:30,600 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:31:30" (3/4) ... [2021-11-03 05:31:30,604 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 05:31:30,604 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:31:30,608 INFO L168 Benchmark]: Toolchain (without parser) took 1167.90 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 63.1 MB in the beginning and 93.0 MB in the end (delta: -29.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:31:30,609 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 96.5 MB. Free memory is still 48.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:31:30,611 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.93 ms. Allocated memory is still 96.5 MB. Free memory was 63.0 MB in the beginning and 71.6 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:31:30,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.69 ms. Allocated memory is still 96.5 MB. Free memory was 71.6 MB in the beginning and 69.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:31:30,614 INFO L168 Benchmark]: Boogie Preprocessor took 21.59 ms. Allocated memory is still 96.5 MB. Free memory was 69.9 MB in the beginning and 68.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:31:30,615 INFO L168 Benchmark]: RCFGBuilder took 415.68 ms. Allocated memory is still 96.5 MB. Free memory was 68.9 MB in the beginning and 54.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 05:31:30,622 INFO L168 Benchmark]: TraceAbstraction took 398.52 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 53.6 MB in the beginning and 93.6 MB in the end (delta: -40.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:31:30,624 INFO L168 Benchmark]: Witness Printer took 5.60 ms. Allocated memory is still 121.6 MB. Free memory was 93.6 MB in the beginning and 93.0 MB in the end (delta: 598.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:31:30,631 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 96.5 MB. Free memory is still 48.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 284.93 ms. Allocated memory is still 96.5 MB. Free memory was 63.0 MB in the beginning and 71.6 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.69 ms. Allocated memory is still 96.5 MB. Free memory was 71.6 MB in the beginning and 69.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.59 ms. Allocated memory is still 96.5 MB. Free memory was 69.9 MB in the beginning and 68.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 415.68 ms. Allocated memory is still 96.5 MB. Free memory was 68.9 MB in the beginning and 54.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 398.52 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 53.6 MB in the beginning and 93.6 MB in the end (delta: -40.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.60 ms. Allocated memory is still 121.6 MB. Free memory was 93.6 MB in the beginning and 93.0 MB in the end (delta: 598.9 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: overapproximation of someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of someUnaryDOUBLEoperation at line 32, overapproximation of someBinaryDOUBLEComparisonOperation at line 56. Possible FailurePath: [L22] double _EPS = 1e-6; [L49] double d, r; [L51] d = __VERIFIER_nondet_double() [L18] COND FALSE !(!cond) [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; [L28] COND TRUE Input <= 1.0 [L28] xn = 1.0 [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; [L54] r = SqrtR(d) [L20] COND TRUE !(cond) VAL [_EPS=1/1000000] [L20] reach_error() VAL [_EPS=1/1000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 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=7occurred 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, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-03 05:31:30,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH --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 3bb1d9e312234d5c4f7ead2dcb51cc43e4ff3aebeffef1b0758f6a0d5be2ea9b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:31:33,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:31:33,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:31:33,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:31:33,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:31:33,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:31:33,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:31:33,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:31:33,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:31:33,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:31:33,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:31:33,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:31:33,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:31:33,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:31:33,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:31:33,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:31:33,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:31:33,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:31:33,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:31:33,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:31:33,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:31:33,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:31:33,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:31:33,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:31:33,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:31:33,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:31:33,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:31:33,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:31:33,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:31:33,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:31:33,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:31:33,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:31:33,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:31:33,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:31:33,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:31:33,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:31:33,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:31:33,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:31:33,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:31:33,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:31:33,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:31:33,156 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:31:33,182 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:31:33,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:31:33,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:31:33,184 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:31:33,184 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:31:33,184 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:31:33,185 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:31:33,185 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:31:33,185 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:31:33,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:31:33,186 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:31:33,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:31:33,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:31:33,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:31:33,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:31:33,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:31:33,188 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:31:33,188 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:31:33,188 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:31:33,189 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:31:33,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:31:33,189 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:31:33,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:31:33,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:31:33,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:31:33,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:31:33,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:31:33,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:31:33,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:31:33,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:31:33,192 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:31:33,192 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:31:33,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:31:33,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:31:33,193 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:31:33,193 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_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bb1d9e312234d5c4f7ead2dcb51cc43e4ff3aebeffef1b0758f6a0d5be2ea9b [2021-11-03 05:31:33,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:31:33,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:31:33,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:31:33,549 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:31:33,554 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:31:33,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c [2021-11-03 05:31:33,631 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/data/b3f7b2ab3/86f85cf990eb45c6bc94c7ab421996de/FLAG7cc98e6cb [2021-11-03 05:31:34,157 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:31:34,158 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c [2021-11-03 05:31:34,166 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/data/b3f7b2ab3/86f85cf990eb45c6bc94c7ab421996de/FLAG7cc98e6cb [2021-11-03 05:31:34,489 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/data/b3f7b2ab3/86f85cf990eb45c6bc94c7ab421996de [2021-11-03 05:31:34,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:31:34,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:31:34,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:31:34,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:31:34,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:31:34,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:31:34" (1/1) ... [2021-11-03 05:31:34,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b43ffee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:34, skipping insertion in model container [2021-11-03 05:31:34,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:31:34" (1/1) ... [2021-11-03 05:31:34,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:31:34,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:31:34,658 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_15c1ec71-d2d8-4d18-8691-589255f6da59/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c[831,844] [2021-11-03 05:31:34,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:31:34,690 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:31:34,702 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_15c1ec71-d2d8-4d18-8691-589255f6da59/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c[831,844] [2021-11-03 05:31:34,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:31:34,726 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:31:34,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:34 WrapperNode [2021-11-03 05:31:34,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:31:34,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:31:34,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:31:34,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:31:34,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:34" (1/1) ... [2021-11-03 05:31:34,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:34" (1/1) ... [2021-11-03 05:31:34,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:31:34,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:31:34,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:31:34,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:31:34,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:34" (1/1) ... [2021-11-03 05:31:34,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:34" (1/1) ... [2021-11-03 05:31:34,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:34" (1/1) ... [2021-11-03 05:31:34,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:34" (1/1) ... [2021-11-03 05:31:34,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:34" (1/1) ... [2021-11-03 05:31:34,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:34" (1/1) ... [2021-11-03 05:31:34,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:34" (1/1) ... [2021-11-03 05:31:34,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:31:34,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:31:34,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:31:34,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:31:34,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:34" (1/1) ... [2021-11-03 05:31:34,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:31:34,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:31:34,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:31:34,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:31:34,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:31:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:31:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:31:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:31:43,983 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:31:43,983 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-03 05:31:43,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:31:43 BoogieIcfgContainer [2021-11-03 05:31:43,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:31:43,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:31:43,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:31:43,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:31:43,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:31:34" (1/3) ... [2021-11-03 05:31:43,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f861682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:31:43, skipping insertion in model container [2021-11-03 05:31:43,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:34" (2/3) ... [2021-11-03 05:31:43,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f861682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:31:43, skipping insertion in model container [2021-11-03 05:31:43,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:31:43" (3/3) ... [2021-11-03 05:31:43,996 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_interval.c [2021-11-03 05:31:44,002 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:31:44,002 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 05:31:44,055 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:31:44,062 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 [2021-11-03 05:31:44,063 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 05:31:44,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 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) [2021-11-03 05:31:44,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 05:31:44,085 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:31:44,086 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:31:44,086 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:31:44,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:31:44,104 INFO L85 PathProgramCache]: Analyzing trace with hash 334453616, now seen corresponding path program 1 times [2021-11-03 05:31:44,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:31:44,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998646012] [2021-11-03 05:31:44,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:31:44,117 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:31:44,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:31:44,122 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:31:44,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:31:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:31:45,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:31:45,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:31:45,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:31:45,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:31:45,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:31:45,990 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:31:45,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998646012] [2021-11-03 05:31:45,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998646012] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:31:45,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:31:45,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:31:45,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888695622] [2021-11-03 05:31:45,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:31:45,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:31:46,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:31:46,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:31:46,030 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 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) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:46,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:31:46,052 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2021-11-03 05:31:46,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:31:46,053 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 05:31:46,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:31:46,068 INFO L225 Difference]: With dead ends: 29 [2021-11-03 05:31:46,068 INFO L226 Difference]: Without dead ends: 12 [2021-11-03 05:31:46,079 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:31:46,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-03 05:31:46,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-03 05:31:46,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:46,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-11-03 05:31:46,123 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 11 [2021-11-03 05:31:46,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:31:46,130 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-11-03 05:31:46,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:46,131 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-11-03 05:31:46,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 05:31:46,132 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:31:46,132 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:31:46,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:31:46,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:31:46,347 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:31:46,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:31:46,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1014511986, now seen corresponding path program 1 times [2021-11-03 05:31:46,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:31:46,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105533838] [2021-11-03 05:31:46,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:31:46,351 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:31:46,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:31:46,353 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:31:46,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:31:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:31:47,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 05:31:47,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:31:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:31:48,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:31:59,559 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_7 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_7))) is different from false [2021-11-03 05:32:01,629 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_7 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_7))) is different from true [2021-11-03 05:32:06,567 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_7 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse2 .cse2))) v_ULTIMATE.start_SqrtR_~linf~0_7))) is different from false [2021-11-03 05:32:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:32:14,440 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:32:14,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105533838] [2021-11-03 05:32:14,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105533838] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:32:14,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:32:14,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-03 05:32:14,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811289919] [2021-11-03 05:32:14,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:32:14,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:32:14,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:32:14,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=20, Unknown=3, NotChecked=18, Total=56 [2021-11-03 05:32:14,446 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:18,127 WARN L860 $PredicateComparison]: unable to prove that (and (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_7 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_7))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_SqrtR_~xn~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-03 05:32:34,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:32:34,871 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-03 05:32:34,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:32:34,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 05:32:34,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:32:34,873 INFO L225 Difference]: With dead ends: 19 [2021-11-03 05:32:34,873 INFO L226 Difference]: Without dead ends: 14 [2021-11-03 05:32:34,874 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=17, Invalid=21, Unknown=4, NotChecked=30, Total=72 [2021-11-03 05:32:34,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-03 05:32:34,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-03 05:32:34,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:34,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-11-03 05:32:34,879 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-11-03 05:32:34,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:32:34,880 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-11-03 05:32:34,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:32:34,880 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-11-03 05:32:34,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 05:32:34,881 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:32:34,881 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:32:34,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 05:32:35,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:32:35,097 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:32:35,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:32:35,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1505447948, now seen corresponding path program 1 times [2021-11-03 05:32:35,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:32:35,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247629427] [2021-11-03 05:32:35,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:32:35,100 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:32:35,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:32:35,101 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:32:35,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:32:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:32:39,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-03 05:32:39,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:32:55,222 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (= (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xn~0)))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-03 05:33:36,885 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse5 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (let ((.cse2 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse4) .cse5)) (.cse3 (fp.mul c_currentRoundingMode .cse4 .cse5))) (let ((.cse0 (fp.gt .cse2 .cse3)) (.cse1 (fp.lt .cse2 (fp.neg .cse3)))) (or (and (not .cse0) (not .cse1) (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32))) (and (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv1 32)) (or .cse0 .cse1)))))) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= (fp.div c_currentRoundingMode .cse6 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse6)) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode 20.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-03 05:33:38,951 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse5 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (let ((.cse2 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse4) .cse5)) (.cse3 (fp.mul c_currentRoundingMode .cse4 .cse5))) (let ((.cse0 (fp.gt .cse2 .cse3)) (.cse1 (fp.lt .cse2 (fp.neg .cse3)))) (or (and (not .cse0) (not .cse1) (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32))) (and (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv1 32)) (or .cse0 .cse1)))))) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= (fp.div c_currentRoundingMode .cse6 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse6)) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode 20.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-03 05:34:06,864 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse4 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (let ((.cse1 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse3) .cse4)) (.cse2 (fp.mul c_currentRoundingMode .cse3 .cse4))) (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode 20.0))))) (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.gt .cse1 .cse2)) (not (fp.lt .cse1 (fp.neg .cse2)))))) is different from false [2021-11-03 05:34:08,927 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse4 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (let ((.cse1 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse3) .cse4)) (.cse2 (fp.mul c_currentRoundingMode .cse3 .cse4))) (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode 20.0))))) (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.gt .cse1 .cse2)) (not (fp.lt .cse1 (fp.neg .cse2)))))) is different from true [2021-11-03 05:34:14,605 WARN L207 SmtUtils]: Spent 5.66 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-03 05:34:20,209 WARN L207 SmtUtils]: Spent 5.60 s on a formula simplification that was a NOOP. DAG size: 16 [2021-11-03 05:34:25,770 WARN L207 SmtUtils]: Spent 5.56 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-03 05:34:31,360 WARN L207 SmtUtils]: Spent 5.58 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-03 05:34:36,543 WARN L207 SmtUtils]: Spent 5.18 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-03 05:34:38,967 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.div c_currentRoundingMode .cse2 ULTIMATE.start_SqrtR_~Input))) (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse5 (fp.add c_currentRoundingMode .cse3 .cse3))) (let ((.cse0 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse4) .cse5)) (.cse1 (fp.mul c_currentRoundingMode .cse4 .cse5))) (and (not (fp.gt .cse0 .cse1)) (not (fp.lt .cse0 (fp.neg .cse1))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse2)) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (= |c_ULTIMATE.start_SqrtR_#res| (fp.div c_currentRoundingMode .cse2 .cse3)))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-03 05:34:41,205 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.div c_currentRoundingMode .cse2 ULTIMATE.start_SqrtR_~Input))) (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse5 (fp.add c_currentRoundingMode .cse3 .cse3))) (let ((.cse0 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse4) .cse5)) (.cse1 (fp.mul c_currentRoundingMode .cse4 .cse5))) (and (not (fp.gt .cse0 .cse1)) (not (fp.lt .cse0 (fp.neg .cse1))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse2)) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (= |c_ULTIMATE.start_SqrtR_#res| (fp.div c_currentRoundingMode .cse2 .cse3)))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-03 05:34:51,550 WARN L207 SmtUtils]: Spent 5.57 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-03 05:34:57,141 WARN L207 SmtUtils]: Spent 5.59 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-03 05:35:06,512 WARN L207 SmtUtils]: Spent 5.19 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-03 05:35:12,087 WARN L207 SmtUtils]: Spent 5.57 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-03 05:35:20,107 WARN L207 SmtUtils]: Spent 5.65 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-03 05:35:25,699 WARN L207 SmtUtils]: Spent 5.59 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-03 05:35:30,785 WARN L207 SmtUtils]: Spent 5.09 s on a formula simplification. DAG size of input: 16 DAG size of output: 1 [2021-11-03 05:35:36,046 WARN L207 SmtUtils]: Spent 5.26 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-03 05:35:41,646 WARN L207 SmtUtils]: Spent 5.60 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-03 05:35:47,224 WARN L207 SmtUtils]: Spent 5.58 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-03 05:35:52,812 WARN L207 SmtUtils]: Spent 5.59 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-03 05:36:02,127 WARN L207 SmtUtils]: Spent 5.57 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-03 05:36:07,726 WARN L207 SmtUtils]: Spent 5.60 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-03 05:36:13,316 WARN L207 SmtUtils]: Spent 5.59 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-03 05:36:21,320 WARN L207 SmtUtils]: Spent 5.59 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-03 05:36:26,913 WARN L207 SmtUtils]: Spent 5.59 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-03 05:36:36,333 WARN L207 SmtUtils]: Spent 5.67 s on a formula simplification that was a NOOP. DAG size: 9 [2021-11-03 05:36:41,919 WARN L207 SmtUtils]: Spent 5.59 s on a formula simplification that was a NOOP. DAG size: 9 [2021-11-03 05:36:47,570 WARN L207 SmtUtils]: Spent 5.65 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-03 05:36:53,206 WARN L207 SmtUtils]: Spent 5.60 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-03 05:36:58,840 WARN L207 SmtUtils]: Spent 5.63 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-03 05:37:08,244 WARN L207 SmtUtils]: Spent 5.70 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-03 05:37:13,932 WARN L207 SmtUtils]: Spent 5.69 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-03 05:37:19,599 WARN L207 SmtUtils]: Spent 5.67 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-03 05:37:25,278 WARN L207 SmtUtils]: Spent 5.66 s on a formula simplification that was a NOOP. DAG size: 9 [2021-11-03 05:37:30,920 WARN L207 SmtUtils]: Spent 5.64 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-03 05:37:36,552 WARN L207 SmtUtils]: Spent 5.63 s on a formula simplification that was a NOOP. DAG size: 9 [2021-11-03 05:37:42,181 WARN L207 SmtUtils]: Spent 5.63 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-03 05:37:44,605 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse6 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse2 (fp.div roundNearestTiesToEven .cse6 ULTIMATE.start_SqrtR_~Input))) (and (not (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse1 (fp.add roundNearestTiesToEven .cse2 .cse2))) (fp.gt (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse0) .cse1) (fp.mul roundNearestTiesToEven .cse0 .cse1)))) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (let ((.cse5 (fp.div roundNearestTiesToEven .cse6 .cse2))) (let ((.cse4 (fp.leq .cse5 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (.cse3 (fp.geq .cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 10.0))))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse3) (not .cse4))) (and .cse4 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse3)))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse6)))))) is different from false [2021-11-03 05:37:46,893 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse6 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse2 (fp.div roundNearestTiesToEven .cse6 ULTIMATE.start_SqrtR_~Input))) (and (not (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse1 (fp.add roundNearestTiesToEven .cse2 .cse2))) (fp.gt (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse0) .cse1) (fp.mul roundNearestTiesToEven .cse0 .cse1)))) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (let ((.cse5 (fp.div roundNearestTiesToEven .cse6 .cse2))) (let ((.cse4 (fp.leq .cse5 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (.cse3 (fp.geq .cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 10.0))))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse3) (not .cse4))) (and .cse4 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse3)))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse6)))))) is different from true [2021-11-03 05:37:57,349 WARN L207 SmtUtils]: Spent 5.63 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-03 05:38:02,959 WARN L207 SmtUtils]: Spent 5.61 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-03 05:38:08,173 WARN L207 SmtUtils]: Spent 5.21 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-03 05:38:13,836 WARN L207 SmtUtils]: Spent 5.66 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-03 05:38:21,876 WARN L207 SmtUtils]: Spent 5.63 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-03 05:38:27,533 WARN L207 SmtUtils]: Spent 5.65 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-03 05:38:32,787 WARN L207 SmtUtils]: Spent 5.25 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-03 05:38:38,428 WARN L207 SmtUtils]: Spent 5.64 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-03 05:38:44,053 WARN L207 SmtUtils]: Spent 5.62 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-03 05:38:49,727 WARN L207 SmtUtils]: Spent 5.67 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-03 05:38:55,396 WARN L207 SmtUtils]: Spent 5.67 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-03 05:39:01,062 WARN L207 SmtUtils]: Spent 5.67 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-03 05:39:06,706 WARN L207 SmtUtils]: Spent 5.64 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-03 05:39:09,113 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse2 (fp.div roundNearestTiesToEven .cse4 ULTIMATE.start_SqrtR_~Input))) (and (not (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse1 (fp.add roundNearestTiesToEven .cse2 .cse2))) (fp.gt (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse0) .cse1) (fp.mul roundNearestTiesToEven .cse0 .cse1)))) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (let ((.cse3 (fp.div roundNearestTiesToEven .cse4 .cse2))) (or (not (fp.geq .cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 10.0)))) (not (fp.leq .cse3 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse4)))))) is different from false [2021-11-03 05:39:11,396 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse2 (fp.div roundNearestTiesToEven .cse4 ULTIMATE.start_SqrtR_~Input))) (and (not (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse1 (fp.add roundNearestTiesToEven .cse2 .cse2))) (fp.gt (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse0) .cse1) (fp.mul roundNearestTiesToEven .cse0 .cse1)))) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (let ((.cse3 (fp.div roundNearestTiesToEven .cse4 .cse2))) (or (not (fp.geq .cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 10.0)))) (not (fp.leq .cse3 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse4)))))) is different from true [2021-11-03 05:39:11,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:39:11,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:39:20,689 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 10.0))))) is different from false [2021-11-03 05:39:22,877 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 10.0))))) is different from true [2021-11-03 05:39:37,552 WARN L838 $PredicateComparison]: unable to prove that (or (not (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32))) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 10.0)))))) is different from false [2021-11-03 05:39:39,797 WARN L860 $PredicateComparison]: unable to prove that (or (not (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32))) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 10.0)))))) is different from true [2021-11-03 05:39:44,844 WARN L207 SmtUtils]: Spent 5.02 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-03 05:39:49,853 WARN L207 SmtUtils]: Spent 5.01 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-03 05:39:54,878 WARN L207 SmtUtils]: Spent 5.02 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-03 05:40:02,142 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (let ((.cse0 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse3)) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 .cse3))) (or (fp.gt .cse0 .cse1) (let ((.cse2 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0))) (and (fp.leq .cse2 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 10.0))))) (fp.lt .cse0 (fp.neg .cse1))))) is different from false [2021-11-03 05:40:04,407 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (let ((.cse0 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse3)) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 .cse3))) (or (fp.gt .cse0 .cse1) (let ((.cse2 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0))) (and (fp.leq .cse2 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 10.0))))) (fp.lt .cse0 (fp.neg .cse1))))) is different from true [2021-11-03 05:40:07,950 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-03 05:40:07,951 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:40:07,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247629427] [2021-11-03 05:40:07,952 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-03 05:40:07,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1413113045] [2021-11-03 05:40:07,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:07,952 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:40:07,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:40:07,965 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:40:07,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-03 05:40:07,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-03 05:40:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:40:12,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 05:40:12,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-03 05:40:12,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421053415] [2021-11-03 05:40:12,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:40:12,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:40:12,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:40:12,647 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:40:12,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 05:44:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:18,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-03 05:44:18,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:18,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-03 05:44:18,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:44:18,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-03 05:44:18,200 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-03 05:44:18,200 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-03 05:44:18,206 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:44:18,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:44:18,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-03 05:44:18,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:44:18,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15c1ec71-d2d8-4d18-8691-589255f6da59/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:44:18,823 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-03 05:44:18,826 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:44:18,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:44:18 BoogieIcfgContainer [2021-11-03 05:44:18,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:44:18,840 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:44:18,841 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:44:18,841 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:44:18,842 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:31:43" (3/4) ... [2021-11-03 05:44:18,845 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 05:44:18,845 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:44:18,847 INFO L168 Benchmark]: Toolchain (without parser) took 764353.69 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 46.6 MB in the beginning and 58.2 MB in the end (delta: -11.6 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:44:18,850 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 67.1 MB. Free memory is still 48.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:44:18,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.04 ms. Allocated memory is still 67.1 MB. Free memory was 46.5 MB in the beginning and 35.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:44:18,851 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.26 ms. Allocated memory is still 67.1 MB. Free memory was 35.5 MB in the beginning and 33.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:44:18,852 INFO L168 Benchmark]: Boogie Preprocessor took 63.44 ms. Allocated memory is still 67.1 MB. Free memory was 33.8 MB in the beginning and 49.9 MB in the end (delta: -16.0 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:44:18,852 INFO L168 Benchmark]: RCFGBuilder took 9135.83 ms. Allocated memory is still 67.1 MB. Free memory was 49.9 MB in the beginning and 39.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:44:18,853 INFO L168 Benchmark]: TraceAbstraction took 754851.94 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 39.2 MB in the beginning and 58.2 MB in the end (delta: -19.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:44:18,853 INFO L168 Benchmark]: Witness Printer took 5.48 ms. Allocated memory is still 83.9 MB. Free memory is still 58.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:44:18,856 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 67.1 MB. Free memory is still 48.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 233.04 ms. Allocated memory is still 67.1 MB. Free memory was 46.5 MB in the beginning and 35.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.26 ms. Allocated memory is still 67.1 MB. Free memory was 35.5 MB in the beginning and 33.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.44 ms. Allocated memory is still 67.1 MB. Free memory was 33.8 MB in the beginning and 49.9 MB in the end (delta: -16.0 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * RCFGBuilder took 9135.83 ms. Allocated memory is still 67.1 MB. Free memory was 49.9 MB in the beginning and 39.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 754851.94 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 39.2 MB in the beginning and 58.2 MB in the end (delta: -19.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.48 ms. Allocated memory is still 83.9 MB. Free memory is still 58.2 MB. 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, r; [L51] d = __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; [L54] r = SqrtR(d) [L20] COND TRUE !(cond) [L20] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 754.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 20.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 1 SDslu, 13 SDs, 0 SdLazy, 10 SolverSat, 0 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 16.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 11.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 7.2s SatisfiabilityAnalysisTime, 475.3s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 11 QuantifiedInterpolants, 984 SizeOfPredicates, 24 NumberOfNonLiveVariables, 132 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN