./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/loop-1.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_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/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_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/loop-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/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_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/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 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:54:15,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:54:15,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:54:15,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:54:15,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:54:15,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:54:15,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:54:15,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:54:15,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:54:15,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:54:15,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:54:15,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:54:15,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:54:15,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:54:15,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:54:15,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:54:15,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:54:15,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:54:15,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:54:15,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:54:15,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:54:15,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:54:15,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:54:15,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:54:15,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:54:15,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:54:15,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:54:15,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:54:15,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:54:15,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:54:15,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:54:15,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:54:15,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:54:15,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:54:15,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:54:15,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:54:15,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:54:15,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:54:15,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:54:15,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:54:15,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:54:15,278 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:54:15,320 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:54:15,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:54:15,321 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:54:15,321 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:54:15,322 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:54:15,322 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:54:15,322 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:54:15,322 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:54:15,322 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:54:15,323 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:54:15,329 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:54:15,330 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:54:15,330 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:54:15,330 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:54:15,330 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:54:15,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:54:15,331 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:54:15,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:54:15,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:54:15,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:54:15,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:54:15,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:54:15,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:54:15,333 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:54:15,333 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:54:15,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:54:15,333 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:54:15,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:54:15,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:54:15,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:54:15,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:54:15,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:54:15,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:54:15,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:54:15,336 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:54:15,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:54:15,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:54:15,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:54:15,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:54:15,337 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_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b [2021-11-03 04:54:15,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:54:15,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:54:15,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:54:15,625 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:54:15,630 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:54:15,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-benchs/loop-1.c [2021-11-03 04:54:15,699 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/data/2b0f5c55c/2f7fcd92148d42c7879a3e907d762b1f/FLAG19fe49bad [2021-11-03 04:54:16,196 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:54:16,197 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/sv-benchmarks/c/float-benchs/loop-1.c [2021-11-03 04:54:16,208 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/data/2b0f5c55c/2f7fcd92148d42c7879a3e907d762b1f/FLAG19fe49bad [2021-11-03 04:54:16,598 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/data/2b0f5c55c/2f7fcd92148d42c7879a3e907d762b1f [2021-11-03 04:54:16,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:54:16,605 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:54:16,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:54:16,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:54:16,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:54:16,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:54:16" (1/1) ... [2021-11-03 04:54:16,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52b2f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:16, skipping insertion in model container [2021-11-03 04:54:16,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:54:16" (1/1) ... [2021-11-03 04:54:16,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:54:16,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:54:16,801 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_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-11-03 04:54:16,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:54:16,825 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:54:16,836 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_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-11-03 04:54:16,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:54:16,856 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:54:16,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:16 WrapperNode [2021-11-03 04:54:16,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:54:16,858 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:54:16,858 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:54:16,858 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:54:16,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:16" (1/1) ... [2021-11-03 04:54:16,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:16" (1/1) ... [2021-11-03 04:54:16,891 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:54:16,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:54:16,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:54:16,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:54:16,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:16" (1/1) ... [2021-11-03 04:54:16,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:16" (1/1) ... [2021-11-03 04:54:16,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:16" (1/1) ... [2021-11-03 04:54:16,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:16" (1/1) ... [2021-11-03 04:54:16,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:16" (1/1) ... [2021-11-03 04:54:16,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:16" (1/1) ... [2021-11-03 04:54:16,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:16" (1/1) ... [2021-11-03 04:54:16,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:54:16,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:54:16,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:54:16,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:54:16,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:16" (1/1) ... [2021-11-03 04:54:16,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:54:16,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:54:16,957 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:54:16,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:54:16,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:54:16,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:54:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:54:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:54:17,291 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:54:17,291 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-03 04:54:17,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:54:17 BoogieIcfgContainer [2021-11-03 04:54:17,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:54:17,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:54:17,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:54:17,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:54:17,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:54:16" (1/3) ... [2021-11-03 04:54:17,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71dcee13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:54:17, skipping insertion in model container [2021-11-03 04:54:17,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:16" (2/3) ... [2021-11-03 04:54:17,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71dcee13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:54:17, skipping insertion in model container [2021-11-03 04:54:17,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:54:17" (3/3) ... [2021-11-03 04:54:17,301 INFO L111 eAbstractionObserver]: Analyzing ICFG loop-1.c [2021-11-03 04:54:17,306 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:54:17,306 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:54:17,349 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:54:17,356 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 04:54:17,356 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:54:17,384 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 04:54:17,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 04:54:17,388 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:54:17,389 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 04:54:17,389 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:54:17,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:54:17,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1880294, now seen corresponding path program 1 times [2021-11-03 04:54:17,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:54:17,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179631800] [2021-11-03 04:54:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:54:17,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:54:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:54:17,634 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 04:54:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:54:17,697 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 04:54:17,699 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 04:54:17,700 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:54:17,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:54:17,705 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-03 04:54:17,708 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:54:17,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:54:17 BoogieIcfgContainer [2021-11-03 04:54:17,727 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:54:17,731 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:54:17,731 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:54:17,731 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:54:17,732 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:54:17" (3/4) ... [2021-11-03 04:54:17,735 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 04:54:17,735 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:54:17,740 INFO L168 Benchmark]: Toolchain (without parser) took 1132.71 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 49.0 MB in the beginning and 94.8 MB in the end (delta: -45.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:54:17,741 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory is still 65.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:54:17,742 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.14 ms. Allocated memory is still 90.2 MB. Free memory was 48.8 MB in the beginning and 66.7 MB in the end (delta: -17.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-11-03 04:54:17,743 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.27 ms. Allocated memory is still 90.2 MB. Free memory was 66.7 MB in the beginning and 65.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:54:17,743 INFO L168 Benchmark]: Boogie Preprocessor took 33.66 ms. Allocated memory is still 90.2 MB. Free memory was 65.2 MB in the beginning and 64.3 MB in the end (delta: 913.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:54:17,744 INFO L168 Benchmark]: RCFGBuilder took 367.23 ms. Allocated memory is still 90.2 MB. Free memory was 64.2 MB in the beginning and 54.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:54:17,750 INFO L168 Benchmark]: TraceAbstraction took 432.63 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 53.9 MB in the beginning and 95.2 MB in the end (delta: -41.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:54:17,752 INFO L168 Benchmark]: Witness Printer took 5.25 ms. Allocated memory is still 121.6 MB. Free memory was 95.2 MB in the beginning and 94.8 MB in the end (delta: 433.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:54:17,758 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory is still 65.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 247.14 ms. Allocated memory is still 90.2 MB. Free memory was 48.8 MB in the beginning and 66.7 MB in the end (delta: -17.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.27 ms. Allocated memory is still 90.2 MB. Free memory was 66.7 MB in the beginning and 65.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.66 ms. Allocated memory is still 90.2 MB. Free memory was 65.2 MB in the beginning and 64.3 MB in the end (delta: 913.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 367.23 ms. Allocated memory is still 90.2 MB. Free memory was 64.2 MB in the beginning and 54.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 432.63 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 53.9 MB in the beginning and 95.2 MB in the end (delta: -41.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.25 ms. Allocated memory is still 121.6 MB. Free memory was 95.2 MB in the beginning and 94.8 MB in the end (delta: 433.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 4]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryDOUBLEComparisonOperation at line 20. Possible FailurePath: [L8] float x, y, z; [L10] x = 1.f [L11] y = 1e7 [L12] z = 42.f [L14] COND FALSE !(x < y) [L4] COND TRUE !(cond) [L4] reach_error() - 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 04:54:17,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/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_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/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_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/loop-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/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_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/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 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:54:20,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:54:20,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:54:20,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:54:20,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:54:20,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:54:20,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:54:20,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:54:20,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:54:20,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:54:20,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:54:20,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:54:20,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:54:20,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:54:20,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:54:20,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:54:20,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:54:20,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:54:20,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:54:20,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:54:20,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:54:20,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:54:20,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:54:20,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:54:20,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:54:20,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:54:20,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:54:20,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:54:20,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:54:20,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:54:20,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:54:20,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:54:20,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:54:20,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:54:20,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:54:20,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:54:20,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:54:20,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:54:20,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:54:20,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:54:20,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:54:20,219 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:54:20,244 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:54:20,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:54:20,245 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:54:20,245 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:54:20,245 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:54:20,246 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:54:20,246 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:54:20,246 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:54:20,246 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:54:20,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:54:20,248 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:54:20,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:54:20,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:54:20,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:54:20,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:54:20,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:54:20,249 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:54:20,249 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:54:20,250 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:54:20,250 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:54:20,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:54:20,251 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:54:20,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:54:20,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:54:20,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:54:20,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:54:20,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:54:20,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:54:20,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:54:20,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:54:20,253 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:54:20,253 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:54:20,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:54:20,254 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:54:20,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:54:20,254 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_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b [2021-11-03 04:54:20,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:54:20,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:54:20,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:54:20,631 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:54:20,632 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:54:20,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-benchs/loop-1.c [2021-11-03 04:54:20,690 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/data/4165660cd/8f5639d6209448c68524eba909fce38d/FLAG8cdf91f23 [2021-11-03 04:54:21,188 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:54:21,189 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/sv-benchmarks/c/float-benchs/loop-1.c [2021-11-03 04:54:21,194 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/data/4165660cd/8f5639d6209448c68524eba909fce38d/FLAG8cdf91f23 [2021-11-03 04:54:21,681 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/data/4165660cd/8f5639d6209448c68524eba909fce38d [2021-11-03 04:54:21,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:54:21,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:54:21,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:54:21,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:54:21,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:54:21,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:54:21" (1/1) ... [2021-11-03 04:54:21,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76a55056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:21, skipping insertion in model container [2021-11-03 04:54:21,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:54:21" (1/1) ... [2021-11-03 04:54:21,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:54:21,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:54:21,825 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_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-11-03 04:54:21,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:54:21,848 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:54:21,860 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_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-11-03 04:54:21,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:54:21,881 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:54:21,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:21 WrapperNode [2021-11-03 04:54:21,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:54:21,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:54:21,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:54:21,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:54:21,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:21" (1/1) ... [2021-11-03 04:54:21,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:21" (1/1) ... [2021-11-03 04:54:21,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:54:21,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:54:21,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:54:21,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:54:21,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:21" (1/1) ... [2021-11-03 04:54:21,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:21" (1/1) ... [2021-11-03 04:54:21,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:21" (1/1) ... [2021-11-03 04:54:21,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:21" (1/1) ... [2021-11-03 04:54:21,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:21" (1/1) ... [2021-11-03 04:54:21,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:21" (1/1) ... [2021-11-03 04:54:21,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:21" (1/1) ... [2021-11-03 04:54:21,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:54:21,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:54:21,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:54:21,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:54:21,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:21" (1/1) ... [2021-11-03 04:54:21,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:54:21,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:54:21,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:54:22,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:54:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:54:22,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:54:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:54:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:54:22,688 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:54:22,689 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-03 04:54:22,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:54:22 BoogieIcfgContainer [2021-11-03 04:54:22,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:54:22,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:54:22,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:54:22,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:54:22,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:54:21" (1/3) ... [2021-11-03 04:54:22,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@540632c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:54:22, skipping insertion in model container [2021-11-03 04:54:22,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:54:21" (2/3) ... [2021-11-03 04:54:22,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@540632c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:54:22, skipping insertion in model container [2021-11-03 04:54:22,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:54:22" (3/3) ... [2021-11-03 04:54:22,701 INFO L111 eAbstractionObserver]: Analyzing ICFG loop-1.c [2021-11-03 04:54:22,706 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:54:22,706 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:54:22,757 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:54:22,764 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 04:54:22,764 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:54:22,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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 04:54:22,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:54:22,781 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:54:22,781 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:54:22,782 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:54:22,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:54:22,787 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-11-03 04:54:22,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:54:22,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812819343] [2021-11-03 04:54:22,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:54:22,800 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:54:22,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:54:22,803 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:54:22,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:54:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:54:22,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:54:22,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:54:22,978 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 04:54:22,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:54:23,028 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 04:54:23,029 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:54:23,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812819343] [2021-11-03 04:54:23,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812819343] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:54:23,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:54:23,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:54:23,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843297431] [2021-11-03 04:54:23,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:54:23,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:54:23,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:54:23,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:54:23,051 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 04:54:23,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:54:23,558 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2021-11-03 04:54:23,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:54:23,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) Word has length 6 [2021-11-03 04:54:23,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:54:23,567 INFO L225 Difference]: With dead ends: 21 [2021-11-03 04:54:23,568 INFO L226 Difference]: Without dead ends: 9 [2021-11-03 04:54:23,570 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:54:23,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-03 04:54:23,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-03 04:54:23,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 04:54:23,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-03 04:54:23,595 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-11-03 04:54:23,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:54:23,595 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-11-03 04:54:23,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 04:54:23,596 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-03 04:54:23,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:54:23,596 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:54:23,596 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-11-03 04:54:23,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:54:23,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:54:23,800 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:54:23,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:54:23,804 INFO L85 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 1 times [2021-11-03 04:54:23,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:54:23,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137220140] [2021-11-03 04:54:23,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:54:23,810 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:54:23,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:54:23,842 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:54:23,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:54:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:54:24,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:54:24,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:54:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:54:24,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:54:38,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:54:38,570 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:54:38,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137220140] [2021-11-03 04:54:38,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137220140] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:54:38,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [29094987] [2021-11-03 04:54:38,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:54:38,572 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:54:38,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:54:38,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:54:38,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-03 04:54:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:54:38,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:54:38,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:54:39,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:54:39,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:54:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:54:40,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [29094987] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:54:40,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643629865] [2021-11-03 04:54:40,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:54:40,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:54:40,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:54:40,143 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:54:40,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 04:54:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:54:41,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 04:54:41,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:54:44,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:54:44,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:55:16,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:55:16,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643629865] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:55:16,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:55:16,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 17 [2021-11-03 04:55:16,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601921690] [2021-11-03 04:55:16,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:55:16,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:55:16,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:55:16,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=213, Unknown=4, NotChecked=0, Total=272 [2021-11-03 04:55:16,216 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:55:25,269 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse5))) (let ((.cse2 (fp.add c_currentRoundingMode .cse0 .cse5)) (.cse3 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse5)) (.cse4 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse5)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 100000000.0))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.geq c_ULTIMATE.start_main_~z~0 (_ +zero 8 24)) (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1) (fp.geq .cse2 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse1) (fp.lt .cse3 .cse4) (fp.lt (fp.add c_currentRoundingMode .cse3 .cse5) (fp.sub c_currentRoundingMode .cse4 .cse5)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~z~0) .cse1))))) is different from false [2021-11-03 04:55:27,324 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse5))) (let ((.cse2 (fp.add c_currentRoundingMode .cse0 .cse5)) (.cse3 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse5)) (.cse4 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse5)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 100000000.0))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.geq c_ULTIMATE.start_main_~z~0 (_ +zero 8 24)) (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1) (fp.geq .cse2 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse1) (fp.lt .cse3 .cse4) (fp.lt (fp.add c_currentRoundingMode .cse3 .cse5) (fp.sub c_currentRoundingMode .cse4 .cse5)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~z~0) .cse1))))) is different from true [2021-11-03 04:55:51,624 WARN L207 SmtUtils]: Spent 14.41 s on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2021-11-03 04:56:08,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:08,159 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-11-03 04:56:08,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:56:08,160 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-03 04:56:08,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:08,160 INFO L225 Difference]: With dead ends: 17 [2021-11-03 04:56:08,161 INFO L226 Difference]: Without dead ends: 13 [2021-11-03 04:56:08,162 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 78.7s TimeCoverageRelationStatistics Valid=107, Invalid=351, Unknown=8, NotChecked=40, Total=506 [2021-11-03 04:56:08,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-03 04:56:08,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-03 04:56:08,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 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 04:56:08,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-03 04:56:08,165 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2021-11-03 04:56:08,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:08,165 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-03 04:56:08,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:08,165 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-03 04:56:08,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 04:56:08,166 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:08,166 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2021-11-03 04:56:08,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:56:08,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 04:56:08,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-03 04:56:08,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:56:08,767 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:56:08,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:08,768 INFO L85 PathProgramCache]: Analyzing trace with hash -967103989, now seen corresponding path program 2 times [2021-11-03 04:56:08,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:08,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138792362] [2021-11-03 04:56:08,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:56:08,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:08,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:08,770 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:08,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:56:09,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:56:09,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:56:09,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 04:56:09,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:12,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:07,849 WARN L207 SmtUtils]: Spent 7.22 s on a formula simplification that was a NOOP. DAG size: 14 [2021-11-03 04:57:49,714 WARN L207 SmtUtils]: Spent 7.97 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-03 04:57:58,769 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1)))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)) (fp.geq .cse0 (_ +zero 8 24)))) is different from false [2021-11-03 04:58:11,358 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)))) is different from true [2021-11-03 04:58:11,372 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 7 times theorem prover too weak. 0 trivial. 11 not checked. [2021-11-03 04:58:11,372 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:58:11,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138792362] [2021-11-03 04:58:11,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138792362] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:58:11,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1059817967] [2021-11-03 04:58:11,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:58:11,373 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:58:11,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:58:11,375 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:58:11,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-03 04:58:12,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:58:12,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:58:12,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 04:58:12,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:58:42,742 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:58:42,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:00:46,808 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.lt (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) .cse0) .cse0) .cse0) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse0) .cse0) .cse0) .cse0))) is different from false [2021-11-03 05:00:54,725 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.lt (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) .cse0) .cse0) .cse0) .cse0) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse0) .cse0) .cse0) .cse0) .cse0))) is different from false [2021-11-03 05:00:56,771 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.lt (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) .cse0) .cse0) .cse0) .cse0) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse0) .cse0) .cse0) .cse0) .cse0))) is different from true [2021-11-03 05:01:02,906 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.lt (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse0) .cse0) .cse0) .cse0) .cse0) .cse0))) is different from false [2021-11-03 05:01:04,952 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.lt (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse0) .cse0) .cse0) .cse0) .cse0) .cse0))) is different from true [2021-11-03 05:01:04,965 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 3 times theorem prover too weak. 0 trivial. 15 not checked. [2021-11-03 05:01:04,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1059817967] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:01:04,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569403593] [2021-11-03 05:01:04,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:01:04,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:01:04,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:01:04,967 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:01:04,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 05:01:14,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:01:14,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:01:14,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-03 05:01:14,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:01:22,641 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:01:22,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:48,220 WARN L207 SmtUtils]: Spent 15.64 s on a formula simplification that was a NOOP. DAG size: 21 [2021-11-03 05:03:04,719 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_main_~y~0_51 (_ FloatingPoint 8 24))) (not (fp.lt (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)) v_ULTIMATE.start_main_~y~0_51))) (not (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0)) (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1)))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)) (fp.geq .cse0 (_ +zero 8 24))))) is different from false [2021-11-03 05:03:06,749 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_main_~y~0_51 (_ FloatingPoint 8 24))) (not (fp.lt (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)) v_ULTIMATE.start_main_~y~0_51))) (not (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0)) (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1)))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)) (fp.geq .cse0 (_ +zero 8 24))))) is different from true [2021-11-03 05:03:29,187 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0)) (let ((.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)))) (not (fp.lt (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse1) (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse1))) (forall ((v_ULTIMATE.start_main_~y~0_51 (_ FloatingPoint 8 24))) (not (fp.lt (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse2) .cse2)) v_ULTIMATE.start_main_~y~0_51))))) is different from false [2021-11-03 05:03:31,230 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0)) (let ((.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)))) (not (fp.lt (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse1) (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse1))) (forall ((v_ULTIMATE.start_main_~y~0_51 (_ FloatingPoint 8 24))) (not (fp.lt (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse2) .cse2)) v_ULTIMATE.start_main_~y~0_51))))) is different from true [2021-11-03 05:03:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 7 times theorem prover too weak. 0 trivial. 11 not checked. [2021-11-03 05:03:31,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569403593] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:03:31,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:03:31,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9, 9, 10, 10] total 39 [2021-11-03 05:03:31,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652333711] [2021-11-03 05:03:31,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-03 05:03:31,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:03:31,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-03 05:03:31,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=756, Unknown=70, NotChecked=462, Total=1482 [2021-11-03 05:03:31,267 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 39 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 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 05:03:52,424 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse6 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse0) .cse0) .cse0) .cse0) .cse0) .cse0))) (let ((.cse1 (fp.geq .cse6 (_ +zero 8 24))) (.cse3 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0)) (.cse4 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse0)) (.cse2 (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse6) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)))) (and (= c_ULTIMATE.start_main_~x~0 .cse0) (or (not (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0)) (and .cse1 .cse2) (not (fp.lt .cse3 .cse4)) (forall ((v_ULTIMATE.start_main_~y~0_51 (_ FloatingPoint 8 24))) (not (fp.lt (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse5) .cse5)) v_ULTIMATE.start_main_~y~0_51)))) (= c_ULTIMATE.start_main_~z~0 ((_ to_fp 8 24) c_currentRoundingMode 42.0)) .cse1 (= ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 10000000.0)) c_ULTIMATE.start_main_~y~0) (fp.lt (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 .cse0) .cse0) .cse0) .cse0) .cse0) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse4 .cse0) .cse0) .cse0) .cse0) .cse0)) .cse2 (= c_currentRoundingMode roundNearestTiesToEven))))) is different from true [2021-11-03 05:03:54,483 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse2) .cse2) .cse2) .cse2) .cse2))) (let ((.cse0 (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse3) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0))) (.cse1 (fp.geq .cse3 (_ +zero 8 24)))) (and (or (forall ((v_ULTIMATE.start_main_~y~0_51 (_ FloatingPoint 8 24))) (not (fp.lt (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)) v_ULTIMATE.start_main_~y~0_51))) (not (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0)) (and .cse0 .cse1)) (= c_ULTIMATE.start_main_~x~0 (fp.add c_currentRoundingMode .cse2 .cse2)) (fp.lt (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse2) .cse2) .cse2) .cse2) .cse2) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse2) .cse2) .cse2) .cse2) .cse2)) .cse0 (= c_ULTIMATE.start_main_~z~0 (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 42.0) .cse2)) (= c_ULTIMATE.start_main_~y~0 (fp.sub c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 10000000.0)) .cse2)) (= c_currentRoundingMode roundNearestTiesToEven) .cse1)))) is different from false [2021-11-03 05:03:56,543 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse2) .cse2) .cse2) .cse2) .cse2))) (let ((.cse0 (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse3) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0))) (.cse1 (fp.geq .cse3 (_ +zero 8 24)))) (and (or (forall ((v_ULTIMATE.start_main_~y~0_51 (_ FloatingPoint 8 24))) (not (fp.lt (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)) v_ULTIMATE.start_main_~y~0_51))) (not (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0)) (and .cse0 .cse1)) (= c_ULTIMATE.start_main_~x~0 (fp.add c_currentRoundingMode .cse2 .cse2)) (fp.lt (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse2) .cse2) .cse2) .cse2) .cse2) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse2) .cse2) .cse2) .cse2) .cse2)) .cse0 (= c_ULTIMATE.start_main_~z~0 (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 42.0) .cse2)) (= c_ULTIMATE.start_main_~y~0 (fp.sub c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 10000000.0)) .cse2)) (= c_currentRoundingMode roundNearestTiesToEven) .cse1)))) is different from true [2021-11-03 05:04:38,374 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse5))) (let ((.cse7 (fp.add c_currentRoundingMode .cse0 .cse5))) (let ((.cse9 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse5)) (.cse8 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse5)) (.cse3 (fp.add c_currentRoundingMode .cse7 .cse5))) (let ((.cse1 (fp.add c_currentRoundingMode .cse3 .cse5)) (.cse4 (fp.add c_currentRoundingMode .cse8 .cse5)) (.cse6 (fp.sub c_currentRoundingMode .cse9 .cse5)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 100000000.0))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse2) (fp.geq c_ULTIMATE.start_main_~z~0 (_ +zero 8 24)) (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse2) (fp.geq .cse3 (_ +zero 8 24)) (fp.lt (fp.add c_currentRoundingMode .cse4 .cse5) (fp.sub c_currentRoundingMode .cse6 .cse5)) (fp.geq .cse7 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse2) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse7) .cse2) (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse8 .cse9) (fp.lt .cse4 .cse6) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~z~0) .cse2))))))) is different from false [2021-11-03 05:04:40,435 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse5))) (let ((.cse7 (fp.add c_currentRoundingMode .cse0 .cse5))) (let ((.cse9 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse5)) (.cse8 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse5)) (.cse3 (fp.add c_currentRoundingMode .cse7 .cse5))) (let ((.cse1 (fp.add c_currentRoundingMode .cse3 .cse5)) (.cse4 (fp.add c_currentRoundingMode .cse8 .cse5)) (.cse6 (fp.sub c_currentRoundingMode .cse9 .cse5)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 100000000.0))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse2) (fp.geq c_ULTIMATE.start_main_~z~0 (_ +zero 8 24)) (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse2) (fp.geq .cse3 (_ +zero 8 24)) (fp.lt (fp.add c_currentRoundingMode .cse4 .cse5) (fp.sub c_currentRoundingMode .cse6 .cse5)) (fp.geq .cse7 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse2) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse7) .cse2) (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse8 .cse9) (fp.lt .cse4 .cse6) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~z~0) .cse2))))))) is different from true [2021-11-03 05:04:42,482 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse6))) (let ((.cse3 (fp.add c_currentRoundingMode .cse0 .cse6))) (let ((.cse2 (fp.add c_currentRoundingMode .cse3 .cse6)) (.cse4 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse6)) (.cse5 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse6)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 100000000.0))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.geq c_ULTIMATE.start_main_~z~0 (_ +zero 8 24)) (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1) (fp.geq .cse2 (_ +zero 8 24)) (fp.geq .cse3 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse1) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse1) (fp.lt .cse4 .cse5) (fp.lt (fp.add c_currentRoundingMode .cse4 .cse6) (fp.sub c_currentRoundingMode .cse5 .cse6)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~z~0) .cse1)))))) is different from false [2021-11-03 05:04:44,527 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse6 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse6))) (let ((.cse3 (fp.add c_currentRoundingMode .cse0 .cse6))) (let ((.cse2 (fp.add c_currentRoundingMode .cse3 .cse6)) (.cse4 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse6)) (.cse5 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse6)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 100000000.0))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.geq c_ULTIMATE.start_main_~z~0 (_ +zero 8 24)) (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1) (fp.geq .cse2 (_ +zero 8 24)) (fp.geq .cse3 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse1) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse1) (fp.lt .cse4 .cse5) (fp.lt (fp.add c_currentRoundingMode .cse4 .cse6) (fp.sub c_currentRoundingMode .cse5 .cse6)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~z~0) .cse1)))))) is different from true [2021-11-03 05:04:46,560 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse3))) (let ((.cse2 (fp.add c_currentRoundingMode .cse0 .cse3)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 100000000.0))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.geq c_ULTIMATE.start_main_~z~0 (_ +zero 8 24)) (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1) (fp.geq .cse2 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse1) (fp.lt (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse3) (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse3)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~z~0) .cse1))))) is different from false [2021-11-03 05:05:13,254 WARN L207 SmtUtils]: Spent 5.13 s on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2021-11-03 05:06:33,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:06:33,130 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2021-11-03 05:06:33,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 05:06:33,131 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-03 05:06:33,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:06:33,132 INFO L225 Difference]: With dead ends: 25 [2021-11-03 05:06:33,132 INFO L226 Difference]: Without dead ends: 19 [2021-11-03 05:06:33,134 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 420.4s TimeCoverageRelationStatistics Valid=297, Invalid=1140, Unknown=93, NotChecked=1020, Total=2550 [2021-11-03 05:06:33,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-03 05:06:33,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-03 05:06:33,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:33,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-11-03 05:06:33,140 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2021-11-03 05:06:33,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:06:33,141 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-11-03 05:06:33,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 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 05:06:33,141 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-11-03 05:06:33,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 05:06:33,142 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:06:33,142 INFO L513 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1] [2021-11-03 05:06:33,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:06:33,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-03 05:06:33,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-03 05:06:33,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:06:33,753 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:06:33,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:06:33,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1499312107, now seen corresponding path program 3 times [2021-11-03 05:06:33,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:06:33,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059270666] [2021-11-03 05:06:33,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:06:33,754 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:06:33,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:06:33,755 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:06:33,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c98962-ef46-442d-a5dc-2a0b3fa3f424/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:06:35,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-03 05:06:35,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:06:35,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 05:06:35,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:07:16,342 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:07:16,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:08:22,744 WARN L207 SmtUtils]: Spent 5.92 s on a formula simplification that was a NOOP. DAG size: 14 [2021-11-03 05:08:30,452 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1)))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)) (fp.geq .cse0 (_ +zero 8 24)))) is different from true [2021-11-03 05:08:39,168 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1)))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)) (fp.geq .cse0 (_ +zero 8 24)))) is different from false [2021-11-03 05:08:41,195 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1)))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)) (fp.geq .cse0 (_ +zero 8 24)))) is different from true [2021-11-03 05:08:52,026 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)))) is different from true