./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/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_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw --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 .......................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/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_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw --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 ............................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 06:28:18,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 06:28:18,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 06:28:18,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 06:28:18,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 06:28:18,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 06:28:18,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 06:28:18,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 06:28:18,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 06:28:18,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 06:28:18,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 06:28:18,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 06:28:18,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 06:28:18,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 06:28:18,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 06:28:18,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 06:28:18,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 06:28:18,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 06:28:18,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 06:28:18,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 06:28:18,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 06:28:18,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 06:28:18,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 06:28:18,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 06:28:18,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 06:28:18,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 06:28:18,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 06:28:18,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 06:28:18,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 06:28:18,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 06:28:18,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 06:28:18,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 06:28:18,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 06:28:18,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 06:28:18,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 06:28:18,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 06:28:18,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 06:28:18,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 06:28:18,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 06:28:18,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 06:28:18,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 06:28:18,798 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 06:28:18,847 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 06:28:18,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 06:28:18,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 06:28:18,849 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 06:28:18,849 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 06:28:18,849 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 06:28:18,850 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 06:28:18,850 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 06:28:18,857 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 06:28:18,857 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 06:28:18,858 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 06:28:18,859 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 06:28:18,859 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 06:28:18,859 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 06:28:18,859 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 06:28:18,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 06:28:18,860 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 06:28:18,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 06:28:18,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 06:28:18,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 06:28:18,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 06:28:18,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 06:28:18,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 06:28:18,862 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 06:28:18,862 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 06:28:18,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 06:28:18,862 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 06:28:18,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 06:28:18,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 06:28:18,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 06:28:18,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:28:18,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 06:28:18,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 06:28:18,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 06:28:18,866 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 06:28:18,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 06:28:18,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 06:28:18,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 06:28:18,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 06:28:18,867 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_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0b27c979e636f8f0b41855b0202d99554f0e605524f6adc2a0c0016b8c54c39 [2021-10-20 06:28:19,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 06:28:19,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 06:28:19,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 06:28:19,266 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 06:28:19,267 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 06:28:19,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-10-20 06:28:19,343 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/data/4a78fe637/4d14597fe21940a49d1f16580e369f35/FLAG50ae10198 [2021-10-20 06:28:19,858 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 06:28:19,858 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-10-20 06:28:19,865 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/data/4a78fe637/4d14597fe21940a49d1f16580e369f35/FLAG50ae10198 [2021-10-20 06:28:20,251 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/data/4a78fe637/4d14597fe21940a49d1f16580e369f35 [2021-10-20 06:28:20,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 06:28:20,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 06:28:20,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 06:28:20,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 06:28:20,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 06:28:20,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:28:20" (1/1) ... [2021-10-20 06:28:20,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b0102cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:20, skipping insertion in model container [2021-10-20 06:28:20,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:28:20" (1/1) ... [2021-10-20 06:28:20,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 06:28:20,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:28:20,491 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_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2021-10-20 06:28:20,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:28:20,505 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 06:28:20,533 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_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2021-10-20 06:28:20,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:28:20,549 INFO L208 MainTranslator]: Completed translation [2021-10-20 06:28:20,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:20 WrapperNode [2021-10-20 06:28:20,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 06:28:20,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 06:28:20,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 06:28:20,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 06:28:20,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:20" (1/1) ... [2021-10-20 06:28:20,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:20" (1/1) ... [2021-10-20 06:28:20,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 06:28:20,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 06:28:20,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 06:28:20,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 06:28:20,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:20" (1/1) ... [2021-10-20 06:28:20,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:20" (1/1) ... [2021-10-20 06:28:20,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:20" (1/1) ... [2021-10-20 06:28:20,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:20" (1/1) ... [2021-10-20 06:28:20,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:20" (1/1) ... [2021-10-20 06:28:20,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:20" (1/1) ... [2021-10-20 06:28:20,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:20" (1/1) ... [2021-10-20 06:28:20,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 06:28:20,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 06:28:20,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 06:28:20,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 06:28:20,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:20" (1/1) ... [2021-10-20 06:28:20,654 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:28:20,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:28:20,679 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 06:28:20,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 06:28:20,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 06:28:20,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 06:28:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-20 06:28:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-20 06:28:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-20 06:28:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 06:28:20,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 06:28:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-20 06:28:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 06:28:21,135 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 06:28:21,135 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-20 06:28:21,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:28:21 BoogieIcfgContainer [2021-10-20 06:28:21,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 06:28:21,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 06:28:21,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 06:28:21,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 06:28:21,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:28:20" (1/3) ... [2021-10-20 06:28:21,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cdf450a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:28:21, skipping insertion in model container [2021-10-20 06:28:21,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:20" (2/3) ... [2021-10-20 06:28:21,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cdf450a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:28:21, skipping insertion in model container [2021-10-20 06:28:21,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:28:21" (3/3) ... [2021-10-20 06:28:21,157 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2021-10-20 06:28:21,163 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 06:28:21,164 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 06:28:21,238 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 06:28:21,250 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 06:28:21,250 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 06:28:21,269 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) [2021-10-20 06:28:21,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-20 06:28:21,280 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:28:21,281 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:28:21,281 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:28:21,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:28:21,287 INFO L82 PathProgramCache]: Analyzing trace with hash 2098904294, now seen corresponding path program 1 times [2021-10-20 06:28:21,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:28:21,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723082762] [2021-10-20 06:28:21,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:28:21,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:28:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:28:21,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:28:21,492 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:28:21,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723082762] [2021-10-20 06:28:21,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723082762] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:28:21,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:28:21,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 06:28:21,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273128101] [2021-10-20 06:28:21,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-20 06:28:21,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:28:21,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-20 06:28:21,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 06:28:21,521 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) [2021-10-20 06:28:21,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:28:21,543 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2021-10-20 06:28:21,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-20 06:28:21,545 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 [2021-10-20 06:28:21,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:28:21,560 INFO L225 Difference]: With dead ends: 35 [2021-10-20 06:28:21,560 INFO L226 Difference]: Without dead ends: 16 [2021-10-20 06:28:21,563 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 06:28:21,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-20 06:28:21,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-20 06:28:21,617 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) [2021-10-20 06:28:21,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-10-20 06:28:21,620 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 8 [2021-10-20 06:28:21,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:28:21,621 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-10-20 06:28:21,621 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) [2021-10-20 06:28:21,621 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-10-20 06:28:21,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-20 06:28:21,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:28:21,623 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:28:21,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 06:28:21,623 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:28:21,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:28:21,625 INFO L82 PathProgramCache]: Analyzing trace with hash 473307213, now seen corresponding path program 1 times [2021-10-20 06:28:21,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:28:21,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227792976] [2021-10-20 06:28:21,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:28:21,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:28:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 06:28:21,728 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 06:28:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 06:28:21,788 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-20 06:28:21,789 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 06:28:21,791 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:28:21,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 06:28:21,800 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 06:28:21,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:28:21 BoogieIcfgContainer [2021-10-20 06:28:21,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 06:28:21,825 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 06:28:21,825 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 06:28:21,825 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 06:28:21,826 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:28:21" (3/4) ... [2021-10-20 06:28:21,829 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-20 06:28:21,830 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 06:28:21,832 INFO L168 Benchmark]: Toolchain (without parser) took 1576.38 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 50.9 MB in the beginning and 82.1 MB in the end (delta: -31.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:28:21,833 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 67.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:28:21,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.51 ms. Allocated memory is still 92.3 MB. Free memory was 71.7 MB in the beginning and 66.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-20 06:28:21,834 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.89 ms. Allocated memory is still 92.3 MB. Free memory was 66.8 MB in the beginning and 65.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:28:21,835 INFO L168 Benchmark]: Boogie Preprocessor took 47.72 ms. Allocated memory is still 92.3 MB. Free memory was 65.1 MB in the beginning and 63.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:28:21,836 INFO L168 Benchmark]: RCFGBuilder took 495.08 ms. Allocated memory is still 92.3 MB. Free memory was 63.6 MB in the beginning and 48.8 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-20 06:28:21,837 INFO L168 Benchmark]: TraceAbstraction took 683.56 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 48.3 MB in the beginning and 82.1 MB in the end (delta: -33.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:28:21,837 INFO L168 Benchmark]: Witness Printer took 5.24 ms. Allocated memory is still 111.1 MB. Free memory is still 82.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:28:21,842 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 67.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 276.51 ms. Allocated memory is still 92.3 MB. Free memory was 71.7 MB in the beginning and 66.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.89 ms. Allocated memory is still 92.3 MB. Free memory was 66.8 MB in the beginning and 65.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.72 ms. Allocated memory is still 92.3 MB. Free memory was 65.1 MB in the beginning and 63.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 495.08 ms. Allocated memory is still 92.3 MB. Free memory was 63.6 MB in the beginning and 48.8 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 683.56 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 48.3 MB in the beginning and 82.1 MB in the end (delta: -33.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.24 ms. Allocated memory is still 111.1 MB. Free memory is still 82.1 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 564.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 16.0ms, AutomataDifference: 59.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 22 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 39.7ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.9ms SsaConstructionTime, 143.0ms SatisfiabilityAnalysisTime, 54.1ms 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 [2021-10-20 06:28:21,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 06:28:24,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 06:28:24,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 06:28:24,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 06:28:24,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 06:28:24,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 06:28:24,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 06:28:24,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 06:28:24,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 06:28:24,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 06:28:24,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 06:28:24,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 06:28:24,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 06:28:24,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 06:28:24,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 06:28:24,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 06:28:24,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 06:28:24,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 06:28:24,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 06:28:24,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 06:28:24,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 06:28:24,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 06:28:24,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 06:28:24,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 06:28:24,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 06:28:24,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 06:28:24,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 06:28:24,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 06:28:24,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 06:28:24,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 06:28:24,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 06:28:24,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 06:28:24,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 06:28:24,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 06:28:24,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 06:28:24,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 06:28:24,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 06:28:24,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 06:28:24,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 06:28:24,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 06:28:24,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 06:28:24,694 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-20 06:28:24,744 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 06:28:24,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 06:28:24,746 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 06:28:24,746 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 06:28:24,746 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 06:28:24,746 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 06:28:24,747 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 06:28:24,747 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 06:28:24,747 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 06:28:24,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 06:28:24,750 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 06:28:24,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 06:28:24,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 06:28:24,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 06:28:24,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 06:28:24,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 06:28:24,752 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 06:28:24,752 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-20 06:28:24,752 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-20 06:28:24,752 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 06:28:24,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 06:28:24,753 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 06:28:24,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 06:28:24,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 06:28:24,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-20 06:28:24,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 06:28:24,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:28:24,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 06:28:24,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 06:28:24,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 06:28:24,756 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-20 06:28:24,756 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-20 06:28:24,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 06:28:24,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 06:28:24,757 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 06:28:24,757 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_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0b27c979e636f8f0b41855b0202d99554f0e605524f6adc2a0c0016b8c54c39 [2021-10-20 06:28:25,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 06:28:25,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 06:28:25,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 06:28:25,191 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 06:28:25,192 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 06:28:25,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-10-20 06:28:25,274 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/data/65d554cf3/d239052ac1214b45909b3e08dca1c7e8/FLAG2907968b3 [2021-10-20 06:28:25,819 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 06:28:25,826 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-10-20 06:28:25,833 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/data/65d554cf3/d239052ac1214b45909b3e08dca1c7e8/FLAG2907968b3 [2021-10-20 06:28:26,170 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/data/65d554cf3/d239052ac1214b45909b3e08dca1c7e8 [2021-10-20 06:28:26,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 06:28:26,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 06:28:26,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 06:28:26,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 06:28:26,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 06:28:26,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:28:26" (1/1) ... [2021-10-20 06:28:26,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61895576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:26, skipping insertion in model container [2021-10-20 06:28:26,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:28:26" (1/1) ... [2021-10-20 06:28:26,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 06:28:26,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:28:26,485 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_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2021-10-20 06:28:26,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:28:26,531 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 06:28:26,605 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_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2021-10-20 06:28:26,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:28:26,643 INFO L208 MainTranslator]: Completed translation [2021-10-20 06:28:26,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:26 WrapperNode [2021-10-20 06:28:26,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 06:28:26,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 06:28:26,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 06:28:26,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 06:28:26,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:26" (1/1) ... [2021-10-20 06:28:26,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:26" (1/1) ... [2021-10-20 06:28:26,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 06:28:26,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 06:28:26,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 06:28:26,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 06:28:26,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:26" (1/1) ... [2021-10-20 06:28:26,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:26" (1/1) ... [2021-10-20 06:28:26,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:26" (1/1) ... [2021-10-20 06:28:26,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:26" (1/1) ... [2021-10-20 06:28:26,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:26" (1/1) ... [2021-10-20 06:28:26,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:26" (1/1) ... [2021-10-20 06:28:26,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:26" (1/1) ... [2021-10-20 06:28:26,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 06:28:26,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 06:28:26,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 06:28:26,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 06:28:26,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:26" (1/1) ... [2021-10-20 06:28:26,775 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:28:26,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:28:26,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 06:28:26,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 06:28:26,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-20 06:28:26,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-20 06:28:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-20 06:28:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 06:28:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-20 06:28:26,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 06:28:26,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 06:28:26,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-20 06:28:26,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 06:28:27,292 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 06:28:27,293 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-20 06:28:27,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:28:27 BoogieIcfgContainer [2021-10-20 06:28:27,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 06:28:27,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 06:28:27,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 06:28:27,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 06:28:27,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:28:26" (1/3) ... [2021-10-20 06:28:27,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19eaa487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:28:27, skipping insertion in model container [2021-10-20 06:28:27,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:26" (2/3) ... [2021-10-20 06:28:27,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19eaa487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:28:27, skipping insertion in model container [2021-10-20 06:28:27,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:28:27" (3/3) ... [2021-10-20 06:28:27,305 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2021-10-20 06:28:27,310 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 06:28:27,311 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 06:28:27,381 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 06:28:27,388 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 06:28:27,389 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 06:28:27,405 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) [2021-10-20 06:28:27,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-20 06:28:27,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:28:27,411 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:28:27,412 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:28:27,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:28:27,418 INFO L82 PathProgramCache]: Analyzing trace with hash 2068161395, now seen corresponding path program 1 times [2021-10-20 06:28:27,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:28:27,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228835066] [2021-10-20 06:28:27,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:28:27,433 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:28:27,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:28:27,437 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:28:27,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-20 06:28:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:28:27,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-20 06:28:27,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:28:27,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:28:27,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:28:27,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:28:27,773 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:28:27,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228835066] [2021-10-20 06:28:27,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228835066] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:28:27,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:28:27,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-20 06:28:27,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772125118] [2021-10-20 06:28:27,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-20 06:28:27,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:28:27,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-20 06:28:27,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 06:28:27,809 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) [2021-10-20 06:28:27,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:28:27,831 INFO L93 Difference]: Finished difference Result 50 states and 74 transitions. [2021-10-20 06:28:27,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-20 06:28:27,837 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 [2021-10-20 06:28:27,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:28:27,848 INFO L225 Difference]: With dead ends: 50 [2021-10-20 06:28:27,848 INFO L226 Difference]: Without dead ends: 23 [2021-10-20 06:28:27,851 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 06:28:27,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-20 06:28:27,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-20 06:28:27,889 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) [2021-10-20 06:28:27,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2021-10-20 06:28:27,892 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 11 [2021-10-20 06:28:27,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:28:27,893 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2021-10-20 06:28:27,894 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) [2021-10-20 06:28:27,894 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2021-10-20 06:28:27,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-20 06:28:27,895 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:28:27,896 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:28:27,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-20 06:28:28,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:28:28,110 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:28:28,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:28:28,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1606884976, now seen corresponding path program 1 times [2021-10-20 06:28:28,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:28:28,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836474372] [2021-10-20 06:28:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:28:28,113 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:28:28,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:28:28,124 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:28:28,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-20 06:28:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:28:28,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-20 06:28:28,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:28:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:28:28,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:28:28,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:28:28,712 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:28:28,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836474372] [2021-10-20 06:28:28,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836474372] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:28:28,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:28:28,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-20 06:28:28,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484496580] [2021-10-20 06:28:28,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-20 06:28:28,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:28:28,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-20 06:28:28,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-20 06:28:28,717 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) [2021-10-20 06:28:29,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:28:29,650 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2021-10-20 06:28:29,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-20 06:28:29,651 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 [2021-10-20 06:28:29,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:28:29,652 INFO L225 Difference]: With dead ends: 28 [2021-10-20 06:28:29,652 INFO L226 Difference]: Without dead ends: 22 [2021-10-20 06:28:29,653 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 396.0ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-20 06:28:29,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-20 06:28:29,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-20 06:28:29,656 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) [2021-10-20 06:28:29,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-10-20 06:28:29,657 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2021-10-20 06:28:29,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:28:29,658 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-10-20 06:28:29,658 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) [2021-10-20 06:28:29,658 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-10-20 06:28:29,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-20 06:28:29,659 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:28:29,659 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:28:29,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-20 06:28:29,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:28:29,872 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:28:29,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:28:29,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1251020519, now seen corresponding path program 1 times [2021-10-20 06:28:29,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:28:29,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444291502] [2021-10-20 06:28:29,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:28:29,874 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:28:29,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:28:29,876 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:28:29,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-20 06:28:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:28:29,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-20 06:28:29,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:28:30,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:28:30,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:28:30,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:28:30,495 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:28:30,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444291502] [2021-10-20 06:28:30,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444291502] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:28:30,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:28:30,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-20 06:28:30,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57729863] [2021-10-20 06:28:30,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-20 06:28:30,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:28:30,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-20 06:28:30,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-20 06:28:30,499 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) [2021-10-20 06:28:30,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:28:30,744 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-10-20 06:28:30,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:28:30,746 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 [2021-10-20 06:28:30,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:28:30,746 INFO L225 Difference]: With dead ends: 22 [2021-10-20 06:28:30,746 INFO L226 Difference]: Without dead ends: 0 [2021-10-20 06:28:30,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 400.2ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-20 06:28:30,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-20 06:28:30,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-20 06:28:30,747 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) [2021-10-20 06:28:30,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-20 06:28:30,748 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-20 06:28:30,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:28:30,748 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-20 06:28:30,748 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) [2021-10-20 06:28:30,748 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-20 06:28:30,748 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-20 06:28:30,751 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:28:30,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-20 06:28:30,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:28:30,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-20 06:28:30,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:28:31,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:28:31,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:28:31,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:28:31,055 INFO L860 garLoopResultBuilder]: At program point L85(lines 68 86) the Hoare annotation is: true [2021-10-20 06:28:31,055 INFO L857 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2021-10-20 06:28:31,055 INFO L857 garLoopResultBuilder]: For program point L44(lines 44 47) no Hoare annotation was computed. [2021-10-20 06:28:31,055 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|))) [2021-10-20 06:28:31,056 INFO L857 garLoopResultBuilder]: For program point L32(lines 32 33) no Hoare annotation was computed. [2021-10-20 06:28:31,056 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-20 06:28:31,056 INFO L857 garLoopResultBuilder]: For program point L32-2(lines 32 33) no Hoare annotation was computed. [2021-10-20 06:28:31,056 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-20 06:28:31,056 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-20 06:28:31,057 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 81) no Hoare annotation was computed. [2021-10-20 06:28:31,057 INFO L857 garLoopResultBuilder]: For program point L37(lines 37 38) no Hoare annotation was computed. [2021-10-20 06:28:31,057 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-20 06:28:31,057 INFO L857 garLoopResultBuilder]: For program point L29(lines 29 58) no Hoare annotation was computed. [2021-10-20 06:28:31,058 INFO L857 garLoopResultBuilder]: For program point L54(lines 54 55) no Hoare annotation was computed. [2021-10-20 06:28:31,058 INFO L857 garLoopResultBuilder]: For program point L54-2(lines 54 55) no Hoare annotation was computed. [2021-10-20 06:28:31,058 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|))) [2021-10-20 06:28:31,058 INFO L857 garLoopResultBuilder]: For program point L30(lines 30 42) no Hoare annotation was computed. [2021-10-20 06:28:31,059 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 64) no Hoare annotation was computed. [2021-10-20 06:28:31,059 INFO L857 garLoopResultBuilder]: For program point L59-1(lines 19 66) no Hoare annotation was computed. [2021-10-20 06:28:31,059 INFO L857 garLoopResultBuilder]: For program point L59-2(lines 59 64) no Hoare annotation was computed. [2021-10-20 06:28:31,059 INFO L857 garLoopResultBuilder]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2021-10-20 06:28:31,059 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)) [2021-10-20 06:28:31,060 INFO L857 garLoopResultBuilder]: For program point L22-3(lines 22 27) no Hoare annotation was computed. [2021-10-20 06:28:31,060 INFO L857 garLoopResultBuilder]: For program point L51(lines 51 52) no Hoare annotation was computed. [2021-10-20 06:28:31,060 INFO L857 garLoopResultBuilder]: For program point L80(lines 80 83) no Hoare annotation was computed. [2021-10-20 06:28:31,060 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 58) no Hoare annotation was computed. [2021-10-20 06:28:31,069 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 06:28:31,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:28:31 BoogieIcfgContainer [2021-10-20 06:28:31,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 06:28:31,085 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 06:28:31,085 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 06:28:31,085 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 06:28:31,086 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:28:27" (3/4) ... [2021-10-20 06:28:31,089 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-20 06:28:31,101 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-20 06:28:31,102 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-20 06:28:31,102 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-20 06:28:31,103 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 06:28:31,130 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result) [2021-10-20 06:28:31,131 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(x, x) && 1bv32 == \result) && !~fp.eq~DOUBLE(\result, \result) [2021-10-20 06:28:31,157 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 06:28:31,157 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 06:28:31,159 INFO L168 Benchmark]: Toolchain (without parser) took 4980.78 ms. Allocated memory was 54.5 MB in the beginning and 86.0 MB in the end (delta: 31.5 MB). Free memory was 33.2 MB in the beginning and 64.0 MB in the end (delta: -30.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:28:31,159 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 54.5 MB. Free memory is still 35.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:28:31,160 INFO L168 Benchmark]: CACSL2BoogieTranslator took 463.83 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 33.0 MB in the beginning and 51.0 MB in the end (delta: -17.9 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2021-10-20 06:28:31,161 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.76 ms. Allocated memory is still 69.2 MB. Free memory was 50.8 MB in the beginning and 49.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:28:31,161 INFO L168 Benchmark]: Boogie Preprocessor took 54.13 ms. Allocated memory is still 69.2 MB. Free memory was 49.1 MB in the beginning and 47.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:28:31,162 INFO L168 Benchmark]: RCFGBuilder took 529.37 ms. Allocated memory is still 69.2 MB. Free memory was 47.5 MB in the beginning and 35.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 06:28:31,163 INFO L168 Benchmark]: TraceAbstraction took 3786.81 ms. Allocated memory was 69.2 MB in the beginning and 86.0 MB in the end (delta: 16.8 MB). Free memory was 34.9 MB in the beginning and 67.0 MB in the end (delta: -32.1 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2021-10-20 06:28:31,163 INFO L168 Benchmark]: Witness Printer took 72.45 ms. Allocated memory is still 86.0 MB. Free memory was 67.0 MB in the beginning and 64.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:28:31,167 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 54.5 MB. Free memory is still 35.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 463.83 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 33.0 MB in the beginning and 51.0 MB in the end (delta: -17.9 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.76 ms. Allocated memory is still 69.2 MB. Free memory was 50.8 MB in the beginning and 49.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.13 ms. Allocated memory is still 69.2 MB. Free memory was 49.1 MB in the beginning and 47.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 529.37 ms. Allocated memory is still 69.2 MB. Free memory was 47.5 MB in the beginning and 35.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3786.81 ms. Allocated memory was 69.2 MB in the beginning and 86.0 MB in the end (delta: 16.8 MB). Free memory was 34.9 MB in the beginning and 67.0 MB in the end (delta: -32.1 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Witness Printer took 72.45 ms. Allocated memory is still 86.0 MB. Free memory was 67.0 MB in the beginning and 64.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 3690.6ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 12.5ms, AutomataDifference: 1252.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 93.1ms, InitialAbstractionConstructionTime: 11.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 59 SDtfs, 31 SDslu, 79 SDs, 0 SdLazy, 37 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 760.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 796.3ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 29.3ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 26 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 47.0ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 39.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 49.6ms SsaConstructionTime, 197.9ms SatisfiabilityAnalysisTime, 1172.6ms 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! [2021-10-20 06:28:31,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0c4ddc-2fad-4812-90b9-2d827b4bd15b/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...