./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI --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 92378978a89ae01e3bc9e388811319081868cc5d .................................................................................................................................................................................................................................................................................................... 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_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI --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 92378978a89ae01e3bc9e388811319081868cc5d ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:23,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:23,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:23,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:23,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:23,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:23,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:23,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:23,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:23,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:23,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:23,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:23,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:23,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:23,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:23,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:23,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:23,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:23,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:23,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:23,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:23,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:23,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:23,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:23,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:23,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:23,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:23,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:23,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:23,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:23,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:23,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:23,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:23,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:23,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:23,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:23,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:23,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:23,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:23,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:23,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:23,727 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:27:23,772 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:23,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:23,773 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:23,773 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:23,774 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:23,774 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:23,774 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:23,774 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:23,774 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:23,775 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:23,775 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:23,775 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:23,775 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:23,776 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:23,776 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:23,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:23,777 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:23,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:23,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:23,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:23,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:23,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:23,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:23,779 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:23,779 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:23,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:23,779 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:23,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:23,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:23,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:23,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:23,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:23,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:23,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:23,781 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:23,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:23,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:23,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:23,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:23,782 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_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92378978a89ae01e3bc9e388811319081868cc5d [2021-10-11 02:27:24,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:24,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:24,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:24,075 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:24,076 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:24,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c [2021-10-11 02:27:24,165 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/data/dccfe6c4a/436acf69348b40159973052d06e10e6e/FLAGb68de4daf [2021-10-11 02:27:24,627 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:24,628 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/sv-benchmarks/c/float-newlib/float_req_bl_1031.c [2021-10-11 02:27:24,640 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/data/dccfe6c4a/436acf69348b40159973052d06e10e6e/FLAGb68de4daf [2021-10-11 02:27:25,002 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/data/dccfe6c4a/436acf69348b40159973052d06e10e6e [2021-10-11 02:27:25,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:25,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:25,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:25,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:25,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:25,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:25" (1/1) ... [2021-10-11 02:27:25,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51bcf9d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:25, skipping insertion in model container [2021-10-11 02:27:25,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:25" (1/1) ... [2021-10-11 02:27:25,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:25,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:25,235 WARN L226 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_c8e19354-b629-4768-9f5e-ded1ff6c8fba/sv-benchmarks/c/float-newlib/float_req_bl_1031.c[1571,1584] [2021-10-11 02:27:25,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:25,249 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:25,271 WARN L226 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_c8e19354-b629-4768-9f5e-ded1ff6c8fba/sv-benchmarks/c/float-newlib/float_req_bl_1031.c[1571,1584] [2021-10-11 02:27:25,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:25,284 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:25,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:25 WrapperNode [2021-10-11 02:27:25,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:25,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:25,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:25,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:25,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:25" (1/1) ... [2021-10-11 02:27:25,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:25" (1/1) ... [2021-10-11 02:27:25,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:25,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:25,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:25,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:25,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:25" (1/1) ... [2021-10-11 02:27:25,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:25" (1/1) ... [2021-10-11 02:27:25,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:25" (1/1) ... [2021-10-11 02:27:25,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:25" (1/1) ... [2021-10-11 02:27:25,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:25" (1/1) ... [2021-10-11 02:27:25,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:25" (1/1) ... [2021-10-11 02:27:25,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:25" (1/1) ... [2021-10-11 02:27:25,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:25,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:25,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:25,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:25,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:25" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:25,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:27:25,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:25,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-11 02:27:25,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:27:25,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-11 02:27:25,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:25,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:25,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:27:25,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:27:26,018 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:26,019 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-11 02:27:26,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:26 BoogieIcfgContainer [2021-10-11 02:27:26,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:26,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:26,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:26,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:26,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:25" (1/3) ... [2021-10-11 02:27:26,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751784a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:26, skipping insertion in model container [2021-10-11 02:27:26,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:25" (2/3) ... [2021-10-11 02:27:26,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751784a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:26, skipping insertion in model container [2021-10-11 02:27:26,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:26" (3/3) ... [2021-10-11 02:27:26,035 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1031.c [2021-10-11 02:27:26,048 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:26,051 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:27:26,063 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:27:26,089 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:26,090 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:26,090 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:26,090 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:26,090 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:26,090 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:26,090 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:26,091 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:26,105 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2021-10-11 02:27:26,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:27:26,111 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:26,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:26,112 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:26,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:26,119 INFO L82 PathProgramCache]: Analyzing trace with hash -168133946, now seen corresponding path program 1 times [2021-10-11 02:27:26,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:26,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282134445] [2021-10-11 02:27:26,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:26,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:26,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282134445] [2021-10-11 02:27:26,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:26,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:26,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11020590] [2021-10-11 02:27:26,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:27:26,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:26,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:27:26,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:27:26,290 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2021-10-11 02:27:26,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:26,310 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2021-10-11 02:27:26,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:27:26,312 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-10-11 02:27:26,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:26,328 INFO L225 Difference]: With dead ends: 31 [2021-10-11 02:27:26,328 INFO L226 Difference]: Without dead ends: 14 [2021-10-11 02:27:26,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:27:26,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-11 02:27:26,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-11 02:27:26,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 02:27:26,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-11 02:27:26,370 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2021-10-11 02:27:26,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:26,370 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-11 02:27:26,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:27:26,371 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-11 02:27:26,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:27:26,372 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:26,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:26,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:27:26,372 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:26,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:26,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1262659525, now seen corresponding path program 1 times [2021-10-11 02:27:26,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:26,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055668282] [2021-10-11 02:27:26,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:27:26,440 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:27:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:27:26,523 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:27:26,547 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:27:26,548 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:27:26,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:27:26,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:26 BoogieIcfgContainer [2021-10-11 02:27:26,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:26,576 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:26,576 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:26,576 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:26,577 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:26" (3/4) ... [2021-10-11 02:27:26,580 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:27:26,581 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:26,583 INFO L168 Benchmark]: Toolchain (without parser) took 1574.97 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 54.0 MB in the beginning and 66.1 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:26,584 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory was 70.4 MB in the beginning and 70.3 MB in the end (delta: 79.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:26,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.16 ms. Allocated memory is still 94.4 MB. Free memory was 53.8 MB in the beginning and 68.7 MB in the end (delta: -14.9 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:26,586 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.08 ms. Allocated memory is still 94.4 MB. Free memory was 68.7 MB in the beginning and 67.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:26,587 INFO L168 Benchmark]: Boogie Preprocessor took 51.38 ms. Allocated memory is still 94.4 MB. Free memory was 67.0 MB in the beginning and 65.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:26,588 INFO L168 Benchmark]: RCFGBuilder took 618.81 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 65.8 MB in the beginning and 89.1 MB in the end (delta: -23.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:26,588 INFO L168 Benchmark]: TraceAbstraction took 552.40 ms. Allocated memory is still 113.2 MB. Free memory was 88.5 MB in the beginning and 66.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:26,589 INFO L168 Benchmark]: Witness Printer took 4.84 ms. Allocated memory is still 113.2 MB. Free memory was 66.6 MB in the beginning and 66.1 MB in the end (delta: 539.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:26,594 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory was 70.4 MB in the beginning and 70.3 MB in the end (delta: 79.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 276.16 ms. Allocated memory is still 94.4 MB. Free memory was 53.8 MB in the beginning and 68.7 MB in the end (delta: -14.9 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.08 ms. Allocated memory is still 94.4 MB. Free memory was 68.7 MB in the beginning and 67.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.38 ms. Allocated memory is still 94.4 MB. Free memory was 67.0 MB in the beginning and 65.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 618.81 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 65.8 MB in the beginning and 89.1 MB in the end (delta: -23.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 552.40 ms. Allocated memory is still 113.2 MB. Free memory was 88.5 MB in the beginning and 66.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.84 ms. Allocated memory is still 113.2 MB. Free memory was 66.6 MB in the beginning and 66.1 MB in the end (delta: 539.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: 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 57, overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 24. Possible FailurePath: [L67] float x = 0.0f / 0.0f; [L14] __uint32_t w; [L16] int exponent_less_127; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (w) = gf_u.word [L24] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 [L26] COND FALSE !(exponent_less_127 < 23) [L42] COND FALSE !(exponent_less_127 == 128) [L46] return x; [L68] float res = round_float(x); [L57] return x != x; [L71] COND TRUE !isnan_float(res) [L72] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:29,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:29,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:29,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:29,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:29,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:29,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:29,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:29,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:29,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:29,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:29,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:29,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:29,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:29,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:29,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:29,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:29,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:29,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:29,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:29,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:29,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:29,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:29,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:29,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:29,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:29,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:29,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:29,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:29,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:29,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:29,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:29,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:29,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:29,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:29,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:29,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:29,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:29,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:29,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:29,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:29,451 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:27:29,497 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:29,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:29,500 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:29,500 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:29,500 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:29,500 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:29,501 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:29,501 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:29,501 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:29,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:29,504 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:29,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:29,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:29,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:29,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:29,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:29,505 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:29,506 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:27:29,506 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:27:29,506 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:29,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:29,506 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:29,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:29,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:29,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:27:29,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:29,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:29,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:29,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:29,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:29,508 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:27:29,508 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:27:29,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:29,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:29,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:29,509 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_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92378978a89ae01e3bc9e388811319081868cc5d [2021-10-11 02:27:29,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:29,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:29,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:29,977 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:29,977 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:29,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c [2021-10-11 02:27:30,069 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/data/a22f64685/1f1fd367ea9e4efda539c76b07397015/FLAGe66d7a330 [2021-10-11 02:27:30,714 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:30,714 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/sv-benchmarks/c/float-newlib/float_req_bl_1031.c [2021-10-11 02:27:30,725 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/data/a22f64685/1f1fd367ea9e4efda539c76b07397015/FLAGe66d7a330 [2021-10-11 02:27:31,056 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/data/a22f64685/1f1fd367ea9e4efda539c76b07397015 [2021-10-11 02:27:31,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:31,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:31,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:31,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:31,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:31,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:31" (1/1) ... [2021-10-11 02:27:31,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@184a74d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:31, skipping insertion in model container [2021-10-11 02:27:31,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:31" (1/1) ... [2021-10-11 02:27:31,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:31,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:31,271 WARN L226 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_c8e19354-b629-4768-9f5e-ded1ff6c8fba/sv-benchmarks/c/float-newlib/float_req_bl_1031.c[1571,1584] [2021-10-11 02:27:31,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:31,289 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:31,316 WARN L226 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_c8e19354-b629-4768-9f5e-ded1ff6c8fba/sv-benchmarks/c/float-newlib/float_req_bl_1031.c[1571,1584] [2021-10-11 02:27:31,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:31,336 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:31,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:31 WrapperNode [2021-10-11 02:27:31,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:31,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:31,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:31,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:31,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:31" (1/1) ... [2021-10-11 02:27:31,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:31" (1/1) ... [2021-10-11 02:27:31,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:31,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:31,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:31,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:31,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:31" (1/1) ... [2021-10-11 02:27:31,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:31" (1/1) ... [2021-10-11 02:27:31,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:31" (1/1) ... [2021-10-11 02:27:31,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:31" (1/1) ... [2021-10-11 02:27:31,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:31" (1/1) ... [2021-10-11 02:27:31,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:31" (1/1) ... [2021-10-11 02:27:31,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:31" (1/1) ... [2021-10-11 02:27:31,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:31,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:31,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:31,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:31,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:31" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:27:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-11 02:27:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 02:27:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:31,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-11 02:27:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-11 02:27:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:27:31,994 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:32,010 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-11 02:27:32,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:32 BoogieIcfgContainer [2021-10-11 02:27:32,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:32,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:32,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:32,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:32,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:31" (1/3) ... [2021-10-11 02:27:32,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6462a4c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:32, skipping insertion in model container [2021-10-11 02:27:32,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:31" (2/3) ... [2021-10-11 02:27:32,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6462a4c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:32, skipping insertion in model container [2021-10-11 02:27:32,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:32" (3/3) ... [2021-10-11 02:27:32,049 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1031.c [2021-10-11 02:27:32,065 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:32,069 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:27:32,082 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:27:32,108 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:32,109 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:32,109 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:32,109 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:32,109 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:32,109 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:32,110 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:32,110 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:32,123 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2021-10-11 02:27:32,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:27:32,129 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:32,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:32,131 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:32,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:32,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1590434411, now seen corresponding path program 1 times [2021-10-11 02:27:32,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:32,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250423393] [2021-10-11 02:27:32,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:32,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:27:32,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:32,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:32,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:32,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250423393] [2021-10-11 02:27:32,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:32,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:32,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494698702] [2021-10-11 02:27:32,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:27:32,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:32,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:27:32,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:27:32,424 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2021-10-11 02:27:32,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:32,447 INFO L93 Difference]: Finished difference Result 40 states and 58 transitions. [2021-10-11 02:27:32,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:27:32,448 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-10-11 02:27:32,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:32,461 INFO L225 Difference]: With dead ends: 40 [2021-10-11 02:27:32,462 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 02:27:32,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:27:32,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 02:27:32,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-11 02:27:32,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-11 02:27:32,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-10-11 02:27:32,527 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2021-10-11 02:27:32,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:32,528 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-10-11 02:27:32,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:27:32,528 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2021-10-11 02:27:32,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:27:32,530 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:32,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:32,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:27:32,756 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:32,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:32,762 INFO L82 PathProgramCache]: Analyzing trace with hash -744872786, now seen corresponding path program 1 times [2021-10-11 02:27:32,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:32,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650043606] [2021-10-11 02:27:32,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:32,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 02:27:32,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:33,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:33,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650043606] [2021-10-11 02:27:33,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:33,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:27:33,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345132463] [2021-10-11 02:27:33,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:27:33,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:33,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:27:33,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:27:33,066 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 7 states. [2021-10-11 02:27:33,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:33,297 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-10-11 02:27:33,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:27:33,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2021-10-11 02:27:33,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:33,299 INFO L225 Difference]: With dead ends: 23 [2021-10-11 02:27:33,300 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 02:27:33,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:27:33,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 02:27:33,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-11 02:27:33,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 02:27:33,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-11 02:27:33,311 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 11 [2021-10-11 02:27:33,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:33,313 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-11 02:27:33,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:27:33,313 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-11 02:27:33,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:27:33,314 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:33,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:33,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:27:33,517 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:33,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:33,518 INFO L82 PathProgramCache]: Analyzing trace with hash 812423977, now seen corresponding path program 1 times [2021-10-11 02:27:33,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:33,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174570650] [2021-10-11 02:27:33,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:33,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:27:33,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:33,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:33,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:33,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174570650] [2021-10-11 02:27:33,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:33,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:27:33,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355958023] [2021-10-11 02:27:33,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:27:33,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:33,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:27:33,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:33,748 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2021-10-11 02:27:33,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:33,891 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-10-11 02:27:33,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:27:33,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-10-11 02:27:33,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:33,892 INFO L225 Difference]: With dead ends: 17 [2021-10-11 02:27:33,892 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:27:33,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:27:33,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:27:33,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:27:33,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:27:33,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:27:33,893 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-11 02:27:33,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:33,893 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:27:33,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:27:33,893 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:27:33,894 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:27:34,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:27:34,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:27:34,223 INFO L262 CegarLoopResult]: For program point L27(lines 27 40) no Hoare annotation was computed. [2021-10-11 02:27:34,223 INFO L262 CegarLoopResult]: For program point L48(lines 48 52) no Hoare annotation was computed. [2021-10-11 02:27:34,223 INFO L262 CegarLoopResult]: For program point L48-1(lines 13 54) no Hoare annotation was computed. [2021-10-11 02:27:34,224 INFO L262 CegarLoopResult]: For program point L48-2(lines 48 52) no Hoare annotation was computed. [2021-10-11 02:27:34,224 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 02:27:34,224 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:27:34,224 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 02:27:34,224 INFO L258 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: (and (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_round_float_~x) (= currentRoundingMode roundNearestTiesToEven) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start_round_float_#res|)) [2021-10-11 02:27:34,224 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2021-10-11 02:27:34,225 INFO L258 CegarLoopResult]: At program point L53(lines 13 54) the Hoare annotation is: (and (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_round_float_~x) (= currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start_round_float_#res|)) [2021-10-11 02:27:34,225 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:27:34,225 INFO L262 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2021-10-11 02:27:34,225 INFO L262 CegarLoopResult]: For program point L42(lines 42 46) no Hoare annotation was computed. [2021-10-11 02:27:34,225 INFO L262 CegarLoopResult]: For program point L71(lines 71 74) no Hoare annotation was computed. [2021-10-11 02:27:34,225 INFO L262 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2021-10-11 02:27:34,225 INFO L262 CegarLoopResult]: For program point L26(lines 26 47) no Hoare annotation was computed. [2021-10-11 02:27:34,225 INFO L262 CegarLoopResult]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2021-10-11 02:27:34,225 INFO L258 CegarLoopResult]: At program point L18-2(lines 18 22) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_round_float_~x))) [2021-10-11 02:27:34,226 INFO L262 CegarLoopResult]: For program point L18-3(lines 18 22) no Hoare annotation was computed. [2021-10-11 02:27:34,226 INFO L265 CegarLoopResult]: At program point L76(lines 59 77) the Hoare annotation is: true [2021-10-11 02:27:34,226 INFO L262 CegarLoopResult]: For program point L72(line 72) no Hoare annotation was computed. [2021-10-11 02:27:34,236 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,237 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,238 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,238 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,244 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,245 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,245 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,245 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,247 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,247 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 02:27:34,248 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,248 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 02:27:34,249 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,251 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,252 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,252 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,254 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,254 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,254 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,255 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:34 BoogieIcfgContainer [2021-10-11 02:27:34,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:34,259 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:34,259 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:34,259 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:34,260 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:32" (3/4) ... [2021-10-11 02:27:34,264 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:27:34,279 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-11 02:27:34,279 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-11 02:27:34,280 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:27:34,280 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:34,308 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2021-10-11 02:27:34,310 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result [2021-10-11 02:27:34,311 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result) && ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result [2021-10-11 02:27:34,340 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e19354-b629-4768-9f5e-ded1ff6c8fba/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:34,346 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:34,350 INFO L168 Benchmark]: Toolchain (without parser) took 3283.70 ms. Allocated memory was 62.9 MB in the beginning and 90.2 MB in the end (delta: 27.3 MB). Free memory was 42.1 MB in the beginning and 37.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:34,350 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 62.9 MB. Free memory is still 43.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:34,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.30 ms. Allocated memory is still 62.9 MB. Free memory was 41.9 MB in the beginning and 31.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:34,352 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.16 ms. Allocated memory is still 62.9 MB. Free memory was 31.0 MB in the beginning and 45.3 MB in the end (delta: -14.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:34,352 INFO L168 Benchmark]: Boogie Preprocessor took 51.83 ms. Allocated memory is still 62.9 MB. Free memory was 45.3 MB in the beginning and 44.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:34,353 INFO L168 Benchmark]: RCFGBuilder took 539.00 ms. Allocated memory is still 62.9 MB. Free memory was 43.8 MB in the beginning and 28.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:34,353 INFO L168 Benchmark]: TraceAbstraction took 2217.88 ms. Allocated memory was 62.9 MB in the beginning and 90.2 MB in the end (delta: 27.3 MB). Free memory was 44.7 MB in the beginning and 40.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:34,354 INFO L168 Benchmark]: Witness Printer took 86.84 ms. Allocated memory is still 90.2 MB. Free memory was 40.2 MB in the beginning and 37.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:34,360 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 62.9 MB. Free memory is still 43.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 273.30 ms. Allocated memory is still 62.9 MB. Free memory was 41.9 MB in the beginning and 31.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.16 ms. Allocated memory is still 62.9 MB. Free memory was 31.0 MB in the beginning and 45.3 MB in the end (delta: -14.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.83 ms. Allocated memory is still 62.9 MB. Free memory was 45.3 MB in the beginning and 44.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 539.00 ms. Allocated memory is still 62.9 MB. Free memory was 43.8 MB in the beginning and 28.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2217.88 ms. Allocated memory was 62.9 MB in the beginning and 90.2 MB in the end (delta: 27.3 MB). Free memory was 44.7 MB in the beginning and 40.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. * Witness Printer took 86.84 ms. Allocated memory is still 90.2 MB. Free memory was 40.2 MB in the beginning and 37.4 MB in the end (delta: 2.8 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 Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 72]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant [2021-10-11 02:27:34,373 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,374 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,375 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,375 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,378 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,379 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,379 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,379 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result - InvariantResult [Line: 18]: Loop Invariant [2021-10-11 02:27:34,381 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,381 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 02:27:34,382 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,382 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 57]: Loop Invariant [2021-10-11 02:27:34,383 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,383 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,383 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,383 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,384 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,384 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,384 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:34,385 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result) && ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 30 SDslu, 53 SDs, 0 SdLazy, 34 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 59 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 4 QuantifiedInterpolants, 1725 SizeOfPredicates, 16 NumberOfNonLiveVariables, 138 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 proved your program to be correct! Received shutdown request...