./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8 --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 9192ebbb056e27a8831cb8246a8c32082898b28d ............................................................................................................................................................................................................................................................................................................. 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_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8 --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 9192ebbb056e27a8831cb8246a8c32082898b28d ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:13:34,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:13:34,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:13:34,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:13:34,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:13:34,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:13:34,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:13:34,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:13:34,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:13:34,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:13:34,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:13:34,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:13:34,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:13:34,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:13:34,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:13:34,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:13:34,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:13:34,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:13:34,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:13:34,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:13:34,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:13:34,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:13:34,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:13:34,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:13:34,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:13:34,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:13:34,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:13:34,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:13:34,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:13:34,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:13:34,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:13:34,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:13:34,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:13:34,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:13:34,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:13:34,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:13:34,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:13:34,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:13:34,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:13:34,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:13:34,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:13:34,894 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:13:34,934 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:13:34,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:13:34,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:13:34,936 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:13:34,937 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:13:34,937 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:13:34,937 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:13:34,937 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:13:34,944 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:13:34,945 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:13:34,946 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:13:34,946 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:13:34,947 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:13:34,947 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:13:34,947 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:13:34,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:13:34,948 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:13:34,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:13:34,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:13:34,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:13:34,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:13:34,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:13:34,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:13:34,950 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:13:34,951 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:13:34,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:13:34,951 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:13:34,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:13:34,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:13:34,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:13:34,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:13:34,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:13:34,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:13:34,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:13:34,954 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:13:34,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:13:34,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:13:34,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:13:34,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:13:34,955 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_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9192ebbb056e27a8831cb8246a8c32082898b28d [2021-10-13 07:13:35,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:13:35,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:13:35,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:13:35,302 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:13:35,303 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:13:35,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2021-10-13 07:13:35,405 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/data/c96c0b4e7/2475e2df7a6a4ed592fb36c693a16000/FLAG175bd4e87 [2021-10-13 07:13:35,863 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:13:35,863 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2021-10-13 07:13:35,872 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/data/c96c0b4e7/2475e2df7a6a4ed592fb36c693a16000/FLAG175bd4e87 [2021-10-13 07:13:36,251 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/data/c96c0b4e7/2475e2df7a6a4ed592fb36c693a16000 [2021-10-13 07:13:36,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:13:36,257 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:13:36,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:13:36,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:13:36,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:13:36,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:13:36" (1/1) ... [2021-10-13 07:13:36,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14145c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:36, skipping insertion in model container [2021-10-13 07:13:36,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:13:36" (1/1) ... [2021-10-13 07:13:36,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:13:36,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:13:36,479 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_d9066e3d-572e-455e-89fb-791ac080ad31/sv-benchmarks/c/float-newlib/float_req_bl_1051.c[1637,1650] [2021-10-13 07:13:36,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:13:36,491 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:13:36,514 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_d9066e3d-572e-455e-89fb-791ac080ad31/sv-benchmarks/c/float-newlib/float_req_bl_1051.c[1637,1650] [2021-10-13 07:13:36,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:13:36,529 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:13:36,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:36 WrapperNode [2021-10-13 07:13:36,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:13:36,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:13:36,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:13:36,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:13:36,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:36" (1/1) ... [2021-10-13 07:13:36,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:36" (1/1) ... [2021-10-13 07:13:36,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:13:36,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:13:36,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:13:36,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:13:36,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:36" (1/1) ... [2021-10-13 07:13:36,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:36" (1/1) ... [2021-10-13 07:13:36,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:36" (1/1) ... [2021-10-13 07:13:36,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:36" (1/1) ... [2021-10-13 07:13:36,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:36" (1/1) ... [2021-10-13 07:13:36,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:36" (1/1) ... [2021-10-13 07:13:36,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:36" (1/1) ... [2021-10-13 07:13:36,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:13:36,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:13:36,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:13:36,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:13:36,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:36" (1/1) ... [2021-10-13 07:13:36,606 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:13:36,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:13:36,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:13:36,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:13:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:13:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:13:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-13 07:13:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:13:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-13 07:13:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:13:36,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:13:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 07:13:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:13:37,078 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:13:37,078 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-13 07:13:37,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:13:37 BoogieIcfgContainer [2021-10-13 07:13:37,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:13:37,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:13:37,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:13:37,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:13:37,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:13:36" (1/3) ... [2021-10-13 07:13:37,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4470791e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:13:37, skipping insertion in model container [2021-10-13 07:13:37,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:36" (2/3) ... [2021-10-13 07:13:37,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4470791e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:13:37, skipping insertion in model container [2021-10-13 07:13:37,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:13:37" (3/3) ... [2021-10-13 07:13:37,108 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2021-10-13 07:13:37,113 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:13:37,114 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:13:37,164 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:13:37,172 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, mConcurrency=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 [2021-10-13 07:13:37,172 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:13:37,189 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:13:37,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:13:37,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:13:37,195 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:13:37,195 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:13:37,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:13:37,202 INFO L82 PathProgramCache]: Analyzing trace with hash -342175972, now seen corresponding path program 1 times [2021-10-13 07:13:37,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:13:37,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346211060] [2021-10-13 07:13:37,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:13:37,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:13:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:13:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:13:37,378 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:13:37,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346211060] [2021-10-13 07:13:37,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346211060] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:13:37,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:13:37,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:13:37,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019752781] [2021-10-13 07:13:37,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:13:37,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:13:37,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:13:37,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:13:37,406 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-13 07:13:37,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:13:37,421 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2021-10-13 07:13:37,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:13:37,423 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-10-13 07:13:37,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:13:37,431 INFO L225 Difference]: With dead ends: 31 [2021-10-13 07:13:37,432 INFO L226 Difference]: Without dead ends: 14 [2021-10-13 07:13:37,434 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 [2021-10-13 07:13:37,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-13 07:13:37,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-13 07:13:37,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:13:37,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-13 07:13:37,461 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2021-10-13 07:13:37,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:13:37,461 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-13 07:13:37,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-13 07:13:37,462 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-13 07:13:37,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:13:37,462 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:13:37,462 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:13:37,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:13:37,463 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:13:37,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:13:37,464 INFO L82 PathProgramCache]: Analyzing trace with hash 141140715, now seen corresponding path program 1 times [2021-10-13 07:13:37,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:13:37,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573918503] [2021-10-13 07:13:37,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:13:37,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:13:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:13:37,609 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:13:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:13:37,704 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:13:37,705 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:13:37,707 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:13:37,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:13:37,716 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:13:37,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:13:37 BoogieIcfgContainer [2021-10-13 07:13:37,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:13:37,743 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:13:37,743 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:13:37,744 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:13:37,744 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:13:37" (3/4) ... [2021-10-13 07:13:37,748 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:13:37,749 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:13:37,751 INFO L168 Benchmark]: Toolchain (without parser) took 1492.84 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 67.9 MB in the beginning and 97.5 MB in the end (delta: -29.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:13:37,752 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 104.9 MB. Free memory was 84.6 MB in the beginning and 84.5 MB in the end (delta: 67.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:13:37,753 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.11 ms. Allocated memory is still 104.9 MB. Free memory was 67.7 MB in the beginning and 79.6 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:13:37,754 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.80 ms. Allocated memory is still 104.9 MB. Free memory was 79.6 MB in the beginning and 77.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:13:37,754 INFO L168 Benchmark]: Boogie Preprocessor took 29.80 ms. Allocated memory is still 104.9 MB. Free memory was 77.9 MB in the beginning and 76.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:13:37,755 INFO L168 Benchmark]: RCFGBuilder took 483.64 ms. Allocated memory is still 104.9 MB. Free memory was 76.6 MB in the beginning and 61.0 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:13:37,756 INFO L168 Benchmark]: TraceAbstraction took 659.26 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 60.4 MB in the beginning and 98.2 MB in the end (delta: -37.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:13:37,757 INFO L168 Benchmark]: Witness Printer took 5.35 ms. Allocated memory is still 125.8 MB. Free memory was 98.2 MB in the beginning and 97.5 MB in the end (delta: 734.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:13:37,761 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 104.9 MB. Free memory was 84.6 MB in the beginning and 84.5 MB in the end (delta: 67.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 271.11 ms. Allocated memory is still 104.9 MB. Free memory was 67.7 MB in the beginning and 79.6 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.80 ms. Allocated memory is still 104.9 MB. Free memory was 79.6 MB in the beginning and 77.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.80 ms. Allocated memory is still 104.9 MB. Free memory was 77.9 MB in the beginning and 76.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 483.64 ms. Allocated memory is still 104.9 MB. Free memory was 76.6 MB in the beginning and 61.0 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 659.26 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 60.4 MB in the beginning and 98.2 MB in the end (delta: -37.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.35 ms. Allocated memory is still 125.8 MB. Free memory was 98.2 MB in the beginning and 97.5 MB in the end (delta: 734.0 kB). 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 - UnprovableResult [Line: 73]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 60, overapproximation of someBinaryArithmeticFLOAToperation at line 47, overapproximation of bitwiseAnd at line 24. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L68] float x = 0.0f / 0.0f; [L17] __int32_t i0, j0; [L18] __uint32_t i, ix; VAL [huge_floor=1000000000000000000000000000000] [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (x) [L22] EXPR gf_u.word [L22] (i0) = gf_u.word [L24] ix = (i0 & 0x7fffffff) [L25] j0 = (ix >> 23) - 0x7f VAL [huge_floor=1000000000000000000000000000000] [L26] COND FALSE !(j0 < 23) [L46] COND TRUE !((ix) < 0x7f800000L) [L47] return x + x; VAL [huge_floor=1000000000000000000000000000000] [L69] float res = floor_float(x); [L60] return x != x; [L72] COND TRUE !isnan_float(res) [L73] reach_error() VAL [huge_floor=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 552.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.2ms, AutomataDifference: 46.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 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=16occurred 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: 13.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.8ms SsaConstructionTime, 164.1ms SatisfiabilityAnalysisTime, 49.9ms InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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 [2021-10-13 07:13:37,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/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-4e77c04 [2021-10-13 07:13:40,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:13:40,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:13:40,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:13:40,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:13:40,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:13:40,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:13:40,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:13:40,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:13:40,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:13:40,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:13:40,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:13:40,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:13:40,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:13:40,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:13:40,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:13:40,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:13:40,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:13:40,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:13:40,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:13:40,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:13:40,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:13:40,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:13:40,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:13:40,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:13:40,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:13:40,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:13:40,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:13:40,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:13:40,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:13:40,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:13:40,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:13:40,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:13:40,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:13:40,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:13:40,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:13:40,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:13:40,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:13:40,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:13:40,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:13:40,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:13:40,558 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:13:40,617 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:13:40,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:13:40,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:13:40,618 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:13:40,619 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:13:40,619 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:13:40,619 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:13:40,619 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:13:40,620 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:13:40,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:13:40,622 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:13:40,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:13:40,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:13:40,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:13:40,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:13:40,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:13:40,624 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:13:40,624 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:13:40,624 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:13:40,624 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:13:40,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:13:40,625 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:13:40,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:13:40,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:13:40,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:13:40,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:13:40,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:13:40,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:13:40,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:13:40,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:13:40,627 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:13:40,627 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:13:40,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:13:40,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:13:40,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:13:40,628 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_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9192ebbb056e27a8831cb8246a8c32082898b28d [2021-10-13 07:13:40,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:13:41,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:13:41,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:13:41,019 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:13:41,019 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:13:41,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2021-10-13 07:13:41,092 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/data/f4c6a1530/77ea4ae7da6c44e99215053a29a12732/FLAG292ec14d5 [2021-10-13 07:13:41,590 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:13:41,595 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2021-10-13 07:13:41,606 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/data/f4c6a1530/77ea4ae7da6c44e99215053a29a12732/FLAG292ec14d5 [2021-10-13 07:13:41,927 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/data/f4c6a1530/77ea4ae7da6c44e99215053a29a12732 [2021-10-13 07:13:41,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:13:41,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:13:41,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:13:41,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:13:41,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:13:41,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:13:41" (1/1) ... [2021-10-13 07:13:41,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e5c9e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:41, skipping insertion in model container [2021-10-13 07:13:41,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:13:41" (1/1) ... [2021-10-13 07:13:41,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:13:41,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:13:42,162 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_d9066e3d-572e-455e-89fb-791ac080ad31/sv-benchmarks/c/float-newlib/float_req_bl_1051.c[1637,1650] [2021-10-13 07:13:42,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:13:42,192 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:13:42,252 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_d9066e3d-572e-455e-89fb-791ac080ad31/sv-benchmarks/c/float-newlib/float_req_bl_1051.c[1637,1650] [2021-10-13 07:13:42,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:13:42,287 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:13:42,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:42 WrapperNode [2021-10-13 07:13:42,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:13:42,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:13:42,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:13:42,303 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:13:42,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:42" (1/1) ... [2021-10-13 07:13:42,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:42" (1/1) ... [2021-10-13 07:13:42,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:13:42,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:13:42,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:13:42,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:13:42,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:42" (1/1) ... [2021-10-13 07:13:42,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:42" (1/1) ... [2021-10-13 07:13:42,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:42" (1/1) ... [2021-10-13 07:13:42,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:42" (1/1) ... [2021-10-13 07:13:42,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:42" (1/1) ... [2021-10-13 07:13:42,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:42" (1/1) ... [2021-10-13 07:13:42,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:42" (1/1) ... [2021-10-13 07:13:42,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:13:42,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:13:42,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:13:42,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:13:42,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:42" (1/1) ... [2021-10-13 07:13:42,481 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:13:42,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:13:42,516 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:13:42,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:13:42,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:13:42,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:13:42,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-13 07:13:42,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 07:13:42,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:13:42,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:13:42,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-13 07:13:42,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 07:13:42,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:13:43,328 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:13:43,328 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-13 07:13:43,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:13:43 BoogieIcfgContainer [2021-10-13 07:13:43,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:13:43,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:13:43,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:13:43,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:13:43,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:13:41" (1/3) ... [2021-10-13 07:13:43,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657c6e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:13:43, skipping insertion in model container [2021-10-13 07:13:43,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:42" (2/3) ... [2021-10-13 07:13:43,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657c6e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:13:43, skipping insertion in model container [2021-10-13 07:13:43,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:13:43" (3/3) ... [2021-10-13 07:13:43,341 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2021-10-13 07:13:43,347 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:13:43,347 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:13:43,416 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:13:43,428 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, mConcurrency=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 [2021-10-13 07:13:43,429 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:13:43,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 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) [2021-10-13 07:13:43,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:13:43,452 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:13:43,453 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:13:43,454 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:13:43,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:13:43,460 INFO L82 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2021-10-13 07:13:43,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:13:43,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878490061] [2021-10-13 07:13:43,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:13:43,474 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:13:43,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:13:43,478 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:13:43,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:13:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:13:43,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:13:43,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:13:43,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:13:43,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:13:43,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:13:43,744 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:13:43,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878490061] [2021-10-13 07:13:43,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878490061] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:13:43,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:13:43,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:13:43,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115800764] [2021-10-13 07:13:43,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:13:43,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:13:43,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:13:43,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:13:43,772 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:13:43,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:13:43,798 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2021-10-13 07:13:43,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:13:43,800 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 07:13:43,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:13:43,811 INFO L225 Difference]: With dead ends: 50 [2021-10-13 07:13:43,812 INFO L226 Difference]: Without dead ends: 23 [2021-10-13 07:13:43,816 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:13:43,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-13 07:13:43,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-13 07:13:43,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 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) [2021-10-13 07:13:43,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2021-10-13 07:13:43,858 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2021-10-13 07:13:43,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:13:43,859 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2021-10-13 07:13:43,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:13:43,860 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2021-10-13 07:13:43,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:13:43,861 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:13:43,862 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:13:43,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:13:44,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:13:44,077 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:13:44,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:13:44,079 INFO L82 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2021-10-13 07:13:44,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:13:44,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179058677] [2021-10-13 07:13:44,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:13:44,081 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:13:44,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:13:44,082 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:13:44,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:13:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:13:44,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:13:44,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:13:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:13:44,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:13:44,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:13:44,734 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:13:44,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179058677] [2021-10-13 07:13:44,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179058677] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:13:44,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:13:44,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-13 07:13:44,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068518743] [2021-10-13 07:13:44,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:13:44,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:13:44,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:13:44,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:13:44,756 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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) [2021-10-13 07:13:45,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:13:45,452 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2021-10-13 07:13:45,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:13:45,453 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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 11 [2021-10-13 07:13:45,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:13:45,454 INFO L225 Difference]: With dead ends: 34 [2021-10-13 07:13:45,455 INFO L226 Difference]: Without dead ends: 18 [2021-10-13 07:13:45,456 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 468.0ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:13:45,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-13 07:13:45,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-13 07:13:45,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:13:45,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-13 07:13:45,461 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2021-10-13 07:13:45,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:13:45,461 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-13 07:13:45,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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) [2021-10-13 07:13:45,462 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-13 07:13:45,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 07:13:45,463 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:13:45,464 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:13:45,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-13 07:13:45,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:13:45,680 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:13:45,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:13:45,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1612289523, now seen corresponding path program 1 times [2021-10-13 07:13:45,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:13:45,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966750323] [2021-10-13 07:13:45,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:13:45,682 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:13:45,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:13:45,684 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:13:45,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:13:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:13:45,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:13:45,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:13:46,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:13:46,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:13:46,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:13:46,288 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:13:46,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966750323] [2021-10-13 07:13:46,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966750323] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:13:46,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:13:46,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 07:13:46,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364775134] [2021-10-13 07:13:46,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:13:46,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:13:46,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:13:46,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:13:46,291 INFO L87 Difference]: Start difference. First operand 18 states and 18 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) [2021-10-13 07:13:46,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:13:46,407 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-13 07:13:46,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:13:46,407 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 [2021-10-13 07:13:46,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:13:46,407 INFO L225 Difference]: With dead ends: 18 [2021-10-13 07:13:46,408 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:13:46,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 239.6ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:13:46,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:13:46,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:13:46,409 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) [2021-10-13 07:13:46,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:13:46,409 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-13 07:13:46,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:13:46,409 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:13:46,409 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) [2021-10-13 07:13:46,409 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:13:46,410 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:13:46,412 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:13:46,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:13:46,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:13:46,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:13:46,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:13:46,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:13:46,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:13:46,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:13:46,745 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-10-13 07:13:46,745 INFO L853 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_floor_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) [2021-10-13 07:13:46,746 INFO L857 garLoopResultBuilder]: For program point L27(lines 27 44) no Hoare annotation was computed. [2021-10-13 07:13:46,746 INFO L853 garLoopResultBuilder]: At program point L56(lines 16 57) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_floor_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2021-10-13 07:13:46,746 INFO L857 garLoopResultBuilder]: For program point L19-1(lines 19 23) no Hoare annotation was computed. [2021-10-13 07:13:46,746 INFO L853 garLoopResultBuilder]: At program point L19-2(lines 19 23) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) [2021-10-13 07:13:46,746 INFO L857 garLoopResultBuilder]: For program point L19-3(lines 19 23) no Hoare annotation was computed. [2021-10-13 07:13:46,746 INFO L860 garLoopResultBuilder]: At program point L77(lines 62 78) the Hoare annotation is: true [2021-10-13 07:13:46,747 INFO L857 garLoopResultBuilder]: For program point L73(line 73) no Hoare annotation was computed. [2021-10-13 07:13:46,747 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-10-13 07:13:46,747 INFO L857 garLoopResultBuilder]: For program point L40-2(lines 40 41) no Hoare annotation was computed. [2021-10-13 07:13:46,747 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:13:46,747 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:13:46,747 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:13:46,748 INFO L857 garLoopResultBuilder]: For program point L28(lines 28 34) no Hoare annotation was computed. [2021-10-13 07:13:46,748 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 73) no Hoare annotation was computed. [2021-10-13 07:13:46,748 INFO L857 garLoopResultBuilder]: For program point L37(lines 37 38) no Hoare annotation was computed. [2021-10-13 07:13:46,748 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:13:46,748 INFO L857 garLoopResultBuilder]: For program point L29(lines 29 33) no Hoare annotation was computed. [2021-10-13 07:13:46,748 INFO L857 garLoopResultBuilder]: For program point L46(lines 46 49) no Hoare annotation was computed. [2021-10-13 07:13:46,749 INFO L857 garLoopResultBuilder]: For program point L26(lines 26 50) no Hoare annotation was computed. [2021-10-13 07:13:46,749 INFO L857 garLoopResultBuilder]: For program point L51(lines 51 55) no Hoare annotation was computed. [2021-10-13 07:13:46,749 INFO L857 garLoopResultBuilder]: For program point L51-1(lines 16 57) no Hoare annotation was computed. [2021-10-13 07:13:46,749 INFO L857 garLoopResultBuilder]: For program point L51-2(lines 51 55) no Hoare annotation was computed. [2021-10-13 07:13:46,749 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 75) no Hoare annotation was computed. [2021-10-13 07:13:46,749 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 43) no Hoare annotation was computed. [2021-10-13 07:13:46,754 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:13:46,759 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:13:46,765 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:13:46,767 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:13:46,767 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:13:46,768 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:13:46,768 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:13:46,769 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:13:46,769 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:13:46,769 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:13:46,769 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:13:46,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:13:46 BoogieIcfgContainer [2021-10-13 07:13:46,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:13:46,771 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:13:46,771 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:13:46,772 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:13:46,772 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:13:43" (3/4) ... [2021-10-13 07:13:46,775 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:13:46,786 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-13 07:13:46,786 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 07:13:46,787 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:13:46,787 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:13:46,812 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2021-10-13 07:13:46,813 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2021-10-13 07:13:46,814 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result [2021-10-13 07:13:46,834 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:13:46,834 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:13:46,836 INFO L168 Benchmark]: Toolchain (without parser) took 4901.15 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 47.5 MB in the beginning and 48.7 MB in the end (delta: -1.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:13:46,836 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 65.0 MB. Free memory was 46.8 MB in the beginning and 46.8 MB in the end (delta: 53.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:13:46,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.19 ms. Allocated memory is still 65.0 MB. Free memory was 47.3 MB in the beginning and 49.5 MB in the end (delta: -2.3 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:13:46,838 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.34 ms. Allocated memory is still 65.0 MB. Free memory was 49.5 MB in the beginning and 47.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:13:46,838 INFO L168 Benchmark]: Boogie Preprocessor took 76.65 ms. Allocated memory is still 65.0 MB. Free memory was 47.9 MB in the beginning and 46.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:13:46,839 INFO L168 Benchmark]: RCFGBuilder took 860.88 ms. Allocated memory is still 65.0 MB. Free memory was 46.3 MB in the beginning and 34.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:13:46,839 INFO L168 Benchmark]: TraceAbstraction took 3437.51 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 34.3 MB in the beginning and 51.9 MB in the end (delta: -17.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:13:46,840 INFO L168 Benchmark]: Witness Printer took 63.27 ms. Allocated memory is still 79.7 MB. Free memory was 51.9 MB in the beginning and 48.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:13:46,843 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 65.0 MB. Free memory was 46.8 MB in the beginning and 46.8 MB in the end (delta: 53.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 354.19 ms. Allocated memory is still 65.0 MB. Free memory was 47.3 MB in the beginning and 49.5 MB in the end (delta: -2.3 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.34 ms. Allocated memory is still 65.0 MB. Free memory was 49.5 MB in the beginning and 47.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.65 ms. Allocated memory is still 65.0 MB. Free memory was 47.9 MB in the beginning and 46.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 860.88 ms. Allocated memory is still 65.0 MB. Free memory was 46.3 MB in the beginning and 34.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3437.51 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 34.3 MB in the beginning and 51.9 MB in the end (delta: -17.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 63.27 ms. Allocated memory is still 79.7 MB. Free memory was 51.9 MB in the beginning and 48.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * 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: 73]: 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: 3339.7ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 12.7ms, AutomataDifference: 880.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 120.0ms, InitialAbstractionConstructionTime: 12.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 51 SDtfs, 23 SDslu, 49 SDs, 0 SdLazy, 38 SolverSat, 4 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 406.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 707.7ms 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: 31.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 41 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 39.8ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 74.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 44.0ms SsaConstructionTime, 269.2ms SatisfiabilityAnalysisTime, 1056.2ms InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 11 QuantifiedInterpolants, 224 SizeOfPredicates, 19 NumberOfNonLiveVariables, 142 ConjunctsInSsa, 20 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: 19]: Loop Invariant [2021-10-13 07:13:46,852 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:13:46,852 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 60]: Loop Invariant [2021-10-13 07:13:46,852 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:13:46,853 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:13:46,853 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:13:46,853 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result - InvariantResult [Line: 16]: Loop Invariant [2021-10-13 07:13:46,854 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:13:46,854 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:13:46,854 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:13:46,855 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 07:13:46,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9066e3d-572e-455e-89fb-791ac080ad31/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...