./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8 --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 f0b27c979e636f8f0b41855b0202d99554f0e605524f6adc2a0c0016b8c54c39 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:05:52,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:05:52,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:05:52,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:05:52,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:05:52,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:05:52,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:05:52,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:05:52,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:05:52,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:05:52,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:05:52,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:05:52,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:05:52,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:05:52,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:05:52,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:05:52,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:05:52,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:05:52,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:05:52,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:05:52,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:05:52,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:05:52,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:05:52,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:05:52,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:05:52,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:05:52,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:05:52,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:05:52,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:05:52,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:05:52,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:05:52,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:05:52,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:05:52,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:05:52,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:05:52,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:05:52,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:05:52,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:05:52,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:05:52,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:05:52,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:05:52,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:05:52,590 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:05:52,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:05:52,591 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:05:52,591 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:05:52,591 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:05:52,591 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:05:52,591 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:05:52,592 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:05:52,592 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:05:52,592 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:05:52,592 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:05:52,592 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:05:52,592 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:05:52,593 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:05:52,593 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:05:52,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:05:52,594 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:05:52,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:05:52,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:05:52,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:05:52,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:05:52,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:05:52,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:05:52,595 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:05:52,595 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:05:52,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:05:52,596 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:05:52,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:05:52,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:05:52,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:05:52,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:05:52,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:05:52,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:05:52,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:05:52,597 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:05:52,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:05:52,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:05:52,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:05:52,598 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:05:52,598 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_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0b27c979e636f8f0b41855b0202d99554f0e605524f6adc2a0c0016b8c54c39 [2021-11-07 01:05:52,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:05:52,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:05:52,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:05:52,915 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:05:52,915 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:05:52,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-11-07 01:05:53,023 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/data/d9fcf8e6e/5d267aa4d122463b9c9863d13d3b7118/FLAGe9ca92c00 [2021-11-07 01:05:53,504 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:05:53,505 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-11-07 01:05:53,511 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/data/d9fcf8e6e/5d267aa4d122463b9c9863d13d3b7118/FLAGe9ca92c00 [2021-11-07 01:05:53,861 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/data/d9fcf8e6e/5d267aa4d122463b9c9863d13d3b7118 [2021-11-07 01:05:53,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:05:53,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:05:53,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:05:53,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:05:53,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:05:53,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:53" (1/1) ... [2021-11-07 01:05:53,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@690ef03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:53, skipping insertion in model container [2021-11-07 01:05:53,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:53" (1/1) ... [2021-11-07 01:05:53,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:05:53,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:05:54,066 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_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2021-11-07 01:05:54,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:05:54,078 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:05:54,107 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_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2021-11-07 01:05:54,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:05:54,125 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:05:54,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:54 WrapperNode [2021-11-07 01:05:54,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:05:54,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:05:54,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:05:54,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:05:54,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:54" (1/1) ... [2021-11-07 01:05:54,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:54" (1/1) ... [2021-11-07 01:05:54,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:05:54,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:05:54,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:05:54,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:05:54,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:54" (1/1) ... [2021-11-07 01:05:54,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:54" (1/1) ... [2021-11-07 01:05:54,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:54" (1/1) ... [2021-11-07 01:05:54,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:54" (1/1) ... [2021-11-07 01:05:54,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:54" (1/1) ... [2021-11-07 01:05:54,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:54" (1/1) ... [2021-11-07 01:05:54,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:54" (1/1) ... [2021-11-07 01:05:54,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:05:54,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:05:54,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:05:54,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:05:54,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:54" (1/1) ... [2021-11-07 01:05:54,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:05:54,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:05:54,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:05:54,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:05:54,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:05:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:05:54,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-07 01:05:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 01:05:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-07 01:05:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:05:54,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:05:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 01:05:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:05:54,755 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:05:54,755 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-07 01:05:54,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:05:54 BoogieIcfgContainer [2021-11-07 01:05:54,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:05:54,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:05:54,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:05:54,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:05:54,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:05:53" (1/3) ... [2021-11-07 01:05:54,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412b0db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:05:54, skipping insertion in model container [2021-11-07 01:05:54,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:54" (2/3) ... [2021-11-07 01:05:54,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412b0db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:05:54, skipping insertion in model container [2021-11-07 01:05:54,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:05:54" (3/3) ... [2021-11-07 01:05:54,767 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2021-11-07 01:05:54,772 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:05:54,773 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:05:54,820 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:05:54,827 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 [2021-11-07 01:05:54,827 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:05:54,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.6875) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:54,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:05:54,846 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:54,847 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:05:54,847 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:05:54,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:54,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2098904294, now seen corresponding path program 1 times [2021-11-07 01:05:54,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:05:54,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310663746] [2021-11-07 01:05:54,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:54,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:05:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:55,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:05:55,031 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:05:55,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310663746] [2021-11-07 01:05:55,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310663746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:55,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:05:55,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:05:55,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918288385] [2021-11-07 01:05:55,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:05:55,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:05:55,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:05:55,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:05:55,123 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.6875) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-11-07 01:05:55,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:55,163 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2021-11-07 01:05:55,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:05:55,166 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 8 [2021-11-07 01:05:55,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:55,177 INFO L225 Difference]: With dead ends: 35 [2021-11-07 01:05:55,177 INFO L226 Difference]: Without dead ends: 16 [2021-11-07 01:05:55,182 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:05:55,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-07 01:05:55,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-07 01:05:55,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:55,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-11-07 01:05:55,218 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 8 [2021-11-07 01:05:55,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:55,218 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-11-07 01:05:55,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-11-07 01:05:55,219 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-11-07 01:05:55,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:05:55,220 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:55,220 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:05:55,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:05:55,220 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:05:55,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:55,221 INFO L85 PathProgramCache]: Analyzing trace with hash 473307213, now seen corresponding path program 1 times [2021-11-07 01:05:55,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:05:55,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404667969] [2021-11-07 01:05:55,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:55,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:05:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:05:55,312 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:05:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:05:55,417 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 01:05:55,421 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:05:55,424 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:05:55,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 01:05:55,431 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-07 01:05:55,434 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:05:55,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:05:55 BoogieIcfgContainer [2021-11-07 01:05:55,462 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:05:55,465 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:05:55,465 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:05:55,465 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:05:55,466 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:05:54" (3/4) ... [2021-11-07 01:05:55,469 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 01:05:55,469 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:05:55,472 INFO L168 Benchmark]: Toolchain (without parser) took 1605.44 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 57.7 MB in the beginning and 106.7 MB in the end (delta: -49.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:05:55,473 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 96.5 MB. Free memory was 74.4 MB in the beginning and 74.4 MB in the end (delta: 37.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:05:55,475 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.72 ms. Allocated memory is still 96.5 MB. Free memory was 57.5 MB in the beginning and 46.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:05:55,478 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.53 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 46.7 MB in the beginning and 119.3 MB in the end (delta: -72.7 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:05:55,483 INFO L168 Benchmark]: Boogie Preprocessor took 60.68 ms. Allocated memory is still 142.6 MB. Free memory was 119.3 MB in the beginning and 119.5 MB in the end (delta: -173.4 kB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:05:55,484 INFO L168 Benchmark]: RCFGBuilder took 478.76 ms. Allocated memory is still 142.6 MB. Free memory was 119.5 MB in the beginning and 104.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:05:55,484 INFO L168 Benchmark]: TraceAbstraction took 703.01 ms. Allocated memory is still 142.6 MB. Free memory was 104.3 MB in the beginning and 106.7 MB in the end (delta: -2.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:05:55,484 INFO L168 Benchmark]: Witness Printer took 4.65 ms. Allocated memory is still 142.6 MB. Free memory is still 106.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:05:55,492 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 96.5 MB. Free memory was 74.4 MB in the beginning and 74.4 MB in the end (delta: 37.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 256.72 ms. Allocated memory is still 96.5 MB. Free memory was 57.5 MB in the beginning and 46.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.53 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 46.7 MB in the beginning and 119.3 MB in the end (delta: -72.7 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.68 ms. Allocated memory is still 142.6 MB. Free memory was 119.3 MB in the beginning and 119.5 MB in the end (delta: -173.4 kB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 478.76 ms. Allocated memory is still 142.6 MB. Free memory was 119.5 MB in the beginning and 104.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 703.01 ms. Allocated memory is still 142.6 MB. Free memory was 104.3 MB in the beginning and 106.7 MB in the end (delta: -2.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.65 ms. Allocated memory is still 142.6 MB. Free memory is still 106.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 81]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L76] double x = 0.0 / 0.0; [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L29] COND FALSE !(exponent_less_1023 < 20) [L43] COND TRUE exponent_less_1023 > 51 [L44] COND FALSE !(exponent_less_1023 == 1024) [L47] return x; [L77] double res = round_double(x); [L17] return x != x; [L80] COND TRUE !isnan_double(res) [L81] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 01:05:55,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/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_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8 --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 f0b27c979e636f8f0b41855b0202d99554f0e605524f6adc2a0c0016b8c54c39 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:05:58,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:05:58,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:05:58,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:05:58,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:05:58,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:05:58,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:05:58,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:05:58,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:05:58,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:05:58,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:05:58,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:05:58,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:05:58,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:05:58,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:05:58,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:05:58,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:05:58,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:05:58,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:05:58,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:05:58,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:05:58,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:05:58,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:05:58,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:05:58,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:05:58,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:05:58,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:05:58,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:05:58,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:05:58,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:05:58,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:05:58,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:05:58,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:05:58,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:05:58,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:05:58,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:05:58,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:05:58,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:05:58,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:05:58,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:05:58,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:05:58,262 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:05:58,316 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:05:58,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:05:58,318 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:05:58,318 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:05:58,318 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:05:58,318 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:05:58,319 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:05:58,319 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:05:58,319 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:05:58,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:05:58,322 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:05:58,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:05:58,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:05:58,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:05:58,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:05:58,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:05:58,323 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:05:58,324 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:05:58,324 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:05:58,324 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:05:58,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:05:58,324 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:05:58,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:05:58,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:05:58,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:05:58,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:05:58,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:05:58,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:05:58,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:05:58,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:05:58,327 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:05:58,327 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:58,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:05:58,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:05:58,328 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:05:58,328 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_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0b27c979e636f8f0b41855b0202d99554f0e605524f6adc2a0c0016b8c54c39 [2021-11-07 01:05:58,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:05:58,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:05:58,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:05:58,792 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:05:58,793 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:05:58,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-11-07 01:05:58,875 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/data/0eb21c2cb/45a70239714a432f8e99620ce197736a/FLAGefb862d87 [2021-11-07 01:05:59,449 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:05:59,449 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-11-07 01:05:59,456 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/data/0eb21c2cb/45a70239714a432f8e99620ce197736a/FLAGefb862d87 [2021-11-07 01:05:59,815 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/data/0eb21c2cb/45a70239714a432f8e99620ce197736a [2021-11-07 01:05:59,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:05:59,819 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:05:59,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:05:59,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:05:59,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:05:59,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:59" (1/1) ... [2021-11-07 01:05:59,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f5ab702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:59, skipping insertion in model container [2021-11-07 01:05:59,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:59" (1/1) ... [2021-11-07 01:05:59,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:05:59,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:06:00,000 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_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2021-11-07 01:06:00,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:06:00,030 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:06:00,106 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_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2021-11-07 01:06:00,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:06:00,167 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:06:00,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:00 WrapperNode [2021-11-07 01:06:00,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:06:00,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:06:00,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:06:00,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:06:00,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:00" (1/1) ... [2021-11-07 01:06:00,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:00" (1/1) ... [2021-11-07 01:06:00,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:06:00,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:06:00,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:06:00,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:06:00,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:00" (1/1) ... [2021-11-07 01:06:00,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:00" (1/1) ... [2021-11-07 01:06:00,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:00" (1/1) ... [2021-11-07 01:06:00,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:00" (1/1) ... [2021-11-07 01:06:00,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:00" (1/1) ... [2021-11-07 01:06:00,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:00" (1/1) ... [2021-11-07 01:06:00,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:00" (1/1) ... [2021-11-07 01:06:00,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:06:00,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:06:00,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:06:00,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:06:00,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:00" (1/1) ... [2021-11-07 01:06:00,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:06:00,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:06:00,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:06:00,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:06:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-07 01:06:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-07 01:06:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:06:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:06:00,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:06:00,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:06:00,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:06:00,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:06:00,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:06:00,884 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:06:00,885 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-07 01:06:00,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:06:00 BoogieIcfgContainer [2021-11-07 01:06:00,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:06:00,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:06:00,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:06:00,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:06:00,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:05:59" (1/3) ... [2021-11-07 01:06:00,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d874d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:06:00, skipping insertion in model container [2021-11-07 01:06:00,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:00" (2/3) ... [2021-11-07 01:06:00,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d874d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:06:00, skipping insertion in model container [2021-11-07 01:06:00,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:06:00" (3/3) ... [2021-11-07 01:06:00,895 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2021-11-07 01:06:00,901 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:06:00,901 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:06:00,971 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:06:00,978 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 [2021-11-07 01:06:00,978 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:06:00,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 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) [2021-11-07 01:06:00,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 01:06:01,000 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:01,000 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:01,001 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:06:01,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:01,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2068161395, now seen corresponding path program 1 times [2021-11-07 01:06:01,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:01,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229941656] [2021-11-07 01:06:01,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:01,023 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:01,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:01,026 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:01,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:06:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:01,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:06:01,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:01,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:01,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:01,333 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:01,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229941656] [2021-11-07 01:06:01,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229941656] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:01,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:01,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:06:01,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736311273] [2021-11-07 01:06:01,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:06:01,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:01,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:06:01,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:06:01,363 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:01,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:01,382 INFO L93 Difference]: Finished difference Result 50 states and 74 transitions. [2021-11-07 01:06:01,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:06:01,384 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-07 01:06:01,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:01,393 INFO L225 Difference]: With dead ends: 50 [2021-11-07 01:06:01,393 INFO L226 Difference]: Without dead ends: 23 [2021-11-07 01:06:01,397 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:06:01,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-07 01:06:01,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-07 01:06:01,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 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) [2021-11-07 01:06:01,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2021-11-07 01:06:01,430 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 11 [2021-11-07 01:06:01,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:01,430 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2021-11-07 01:06:01,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:01,431 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2021-11-07 01:06:01,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 01:06:01,432 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:01,432 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:01,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:01,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:01,646 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:06:01,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:01,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1606884976, now seen corresponding path program 1 times [2021-11-07 01:06:01,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:01,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877524994] [2021-11-07 01:06:01,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:01,651 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:01,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:01,652 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:01,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:06:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:01,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:06:01,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:02,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:02,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:02,325 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:02,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877524994] [2021-11-07 01:06:02,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877524994] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:02,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:02,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-07 01:06:02,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150366935] [2021-11-07 01:06:02,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:06:02,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:02,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:06:02,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:06:02,329 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:03,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:03,128 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2021-11-07 01:06:03,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:06:03,129 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-07 01:06:03,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:03,129 INFO L225 Difference]: With dead ends: 28 [2021-11-07 01:06:03,129 INFO L226 Difference]: Without dead ends: 22 [2021-11-07 01:06:03,130 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:06:03,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-07 01:06:03,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-07 01:06:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 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) [2021-11-07 01:06:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-11-07 01:06:03,134 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2021-11-07 01:06:03,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:03,135 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-11-07 01:06:03,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:03,135 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-11-07 01:06:03,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 01:06:03,136 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:03,136 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:03,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:03,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:03,349 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:06:03,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:03,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1251020519, now seen corresponding path program 1 times [2021-11-07 01:06:03,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:03,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295240690] [2021-11-07 01:06:03,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:03,351 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:03,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:03,352 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:03,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:06:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:03,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:06:03,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:03,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:03,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:03,991 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:03,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295240690] [2021-11-07 01:06:03,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295240690] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:03,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:03,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:06:03,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647104420] [2021-11-07 01:06:03,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:06:03,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:03,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:06:03,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:06:03,994 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:04,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:04,200 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-11-07 01:06:04,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:06:04,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-07 01:06:04,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:04,202 INFO L225 Difference]: With dead ends: 22 [2021-11-07 01:06:04,202 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 01:06:04,203 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:06:04,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 01:06:04,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 01:06:04,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-11-07 01:06:04,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 01:06:04,203 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-11-07 01:06:04,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:04,204 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 01:06:04,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:04,204 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 01:06:04,204 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 01:06:04,207 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:06:04,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-07 01:06:04,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:04,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 01:06:04,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:04,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:04,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:04,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:04,497 INFO L860 garLoopResultBuilder]: At program point L85(lines 68 86) the Hoare annotation is: true [2021-11-07 01:06:04,497 INFO L857 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2021-11-07 01:06:04,497 INFO L857 garLoopResultBuilder]: For program point L44(lines 44 47) no Hoare annotation was computed. [2021-11-07 01:06:04,498 INFO L853 garLoopResultBuilder]: At program point L65(lines 19 66) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_round_double_~x ULTIMATE.start_round_double_~x)) (not (fp.eq |ULTIMATE.start_round_double_#res| |ULTIMATE.start_round_double_#res|))) [2021-11-07 01:06:04,498 INFO L857 garLoopResultBuilder]: For program point L32(lines 32 33) no Hoare annotation was computed. [2021-11-07 01:06:04,498 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-07 01:06:04,498 INFO L857 garLoopResultBuilder]: For program point L32-2(lines 32 33) no Hoare annotation was computed. [2021-11-07 01:06:04,499 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 01:06:04,499 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-07 01:06:04,502 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 81) no Hoare annotation was computed. [2021-11-07 01:06:04,502 INFO L857 garLoopResultBuilder]: For program point L37(lines 37 38) no Hoare annotation was computed. [2021-11-07 01:06:04,502 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 01:06:04,502 INFO L857 garLoopResultBuilder]: For program point L29(lines 29 58) no Hoare annotation was computed. [2021-11-07 01:06:04,502 INFO L857 garLoopResultBuilder]: For program point L54(lines 54 55) no Hoare annotation was computed. [2021-11-07 01:06:04,503 INFO L857 garLoopResultBuilder]: For program point L54-2(lines 54 55) no Hoare annotation was computed. [2021-11-07 01:06:04,503 INFO L853 garLoopResultBuilder]: At program point L17(line 17) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_round_double_~x ULTIMATE.start_round_double_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|) (not (fp.eq |ULTIMATE.start_round_double_#res| |ULTIMATE.start_round_double_#res|))) [2021-11-07 01:06:04,503 INFO L857 garLoopResultBuilder]: For program point L30(lines 30 42) no Hoare annotation was computed. [2021-11-07 01:06:04,503 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 64) no Hoare annotation was computed. [2021-11-07 01:06:04,504 INFO L857 garLoopResultBuilder]: For program point L59-1(lines 19 66) no Hoare annotation was computed. [2021-11-07 01:06:04,504 INFO L857 garLoopResultBuilder]: For program point L59-2(lines 59 64) no Hoare annotation was computed. [2021-11-07 01:06:04,504 INFO L857 garLoopResultBuilder]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2021-11-07 01:06:04,504 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 22 27) the Hoare annotation is: (not (fp.eq ULTIMATE.start_round_double_~x ULTIMATE.start_round_double_~x)) [2021-11-07 01:06:04,504 INFO L857 garLoopResultBuilder]: For program point L22-3(lines 22 27) no Hoare annotation was computed. [2021-11-07 01:06:04,505 INFO L857 garLoopResultBuilder]: For program point L51(lines 51 52) no Hoare annotation was computed. [2021-11-07 01:06:04,505 INFO L857 garLoopResultBuilder]: For program point L80(lines 80 83) no Hoare annotation was computed. [2021-11-07 01:06:04,505 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 58) no Hoare annotation was computed. [2021-11-07 01:06:04,509 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-07 01:06:04,510 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:06:04,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:06:04 BoogieIcfgContainer [2021-11-07 01:06:04,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:06:04,524 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:06:04,524 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:06:04,525 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:06:04,525 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:06:00" (3/4) ... [2021-11-07 01:06:04,528 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 01:06:04,540 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-07 01:06:04,541 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-07 01:06:04,541 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-07 01:06:04,542 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:06:04,567 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result) [2021-11-07 01:06:04,568 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(x, x) && 1bv32 == \result) && !~fp.eq~DOUBLE(\result, \result) [2021-11-07 01:06:04,596 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:06:04,596 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:06:04,598 INFO L168 Benchmark]: Toolchain (without parser) took 4778.41 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 32.3 MB in the beginning and 48.1 MB in the end (delta: -15.8 MB). Peak memory consumption was 1.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:06:04,599 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 54.5 MB. Free memory is still 35.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:06:04,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.53 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 32.1 MB in the beginning and 54.3 MB in the end (delta: -22.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:06:04,600 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.51 ms. Allocated memory is still 71.3 MB. Free memory was 54.3 MB in the beginning and 52.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:06:04,601 INFO L168 Benchmark]: Boogie Preprocessor took 82.04 ms. Allocated memory is still 71.3 MB. Free memory was 52.6 MB in the beginning and 51.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:06:04,602 INFO L168 Benchmark]: RCFGBuilder took 566.56 ms. Allocated memory is still 71.3 MB. Free memory was 51.1 MB in the beginning and 38.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:06:04,603 INFO L168 Benchmark]: TraceAbstraction took 3634.67 ms. Allocated memory is still 71.3 MB. Free memory was 38.3 MB in the beginning and 51.3 MB in the end (delta: -13.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2021-11-07 01:06:04,603 INFO L168 Benchmark]: Witness Printer took 72.48 ms. Allocated memory is still 71.3 MB. Free memory was 51.3 MB in the beginning and 48.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:06:04,607 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 54.5 MB. Free memory is still 35.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 348.53 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 32.1 MB in the beginning and 54.3 MB in the end (delta: -22.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.51 ms. Allocated memory is still 71.3 MB. Free memory was 54.3 MB in the beginning and 52.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 82.04 ms. Allocated memory is still 71.3 MB. Free memory was 52.6 MB in the beginning and 51.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 566.56 ms. Allocated memory is still 71.3 MB. Free memory was 51.1 MB in the beginning and 38.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3634.67 ms. Allocated memory is still 71.3 MB. Free memory was 38.3 MB in the beginning and 51.3 MB in the end (delta: -13.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. * Witness Printer took 72.48 ms. Allocated memory is still 71.3 MB. Free memory was 51.3 MB in the beginning and 48.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. 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 - PositiveResult [Line: 81]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 59 SDtfs, 31 SDslu, 79 SDs, 0 SdLazy, 37 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 26 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 70 ConstructedInterpolants, 12 QuantifiedInterpolants, 249 SizeOfPredicates, 18 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (!~fp.eq~DOUBLE(x, x) && 1bv32 == \result) && !~fp.eq~DOUBLE(\result, \result) - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result) RESULT: Ultimate proved your program to be correct! [2021-11-07 01:06:04,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e96b0a-615b-49f7-8abf-fbcb5f03b1e5/bin/utaipan-UUZaoUuFF8/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 Writing output log to file Ultimate.log Result: TRUE