./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/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_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/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_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/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 2c4d19baf0429684b688f90d909ef640d9fb6537 ....................................................................................................................................................................................................................................................................................................... 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_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/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_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/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_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/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 2c4d19baf0429684b688f90d909ef640d9fb6537 ................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:27:30,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:30,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:30,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:30,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:30,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:30,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:30,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:30,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:30,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:30,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:30,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:30,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:30,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:30,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:30,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:30,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:30,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:30,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:30,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:30,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:30,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:30,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:30,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:30,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:30,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:30,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:30,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:30,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:30,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:30,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:30,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:30,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:30,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:30,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:30,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:30,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:30,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:30,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:30,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:30,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:30,157 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:27:30,186 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:30,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:30,188 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:30,188 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:30,188 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:30,189 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:30,189 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:30,189 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:30,189 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:30,190 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:30,190 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:30,190 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:30,191 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:30,191 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:30,191 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:30,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:30,192 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:30,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:30,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:30,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:30,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:30,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:30,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:30,194 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:30,195 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:30,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:30,195 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:30,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:30,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:30,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:30,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:30,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:30,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:30,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:30,198 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:30,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:30,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:30,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:30,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:30,199 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_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c4d19baf0429684b688f90d909ef640d9fb6537 [2021-10-11 02:27:30,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:30,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:30,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:30,555 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:30,556 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:30,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-10-11 02:27:30,626 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/bin/utaipan-WLngWcDbfI/data/11d1126a3/56f4e15745594668a35ae71cd3f825be/FLAG1f13b0460 [2021-10-11 02:27:31,255 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:31,256 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-10-11 02:27:31,263 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/bin/utaipan-WLngWcDbfI/data/11d1126a3/56f4e15745594668a35ae71cd3f825be/FLAG1f13b0460 [2021-10-11 02:27:31,610 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/bin/utaipan-WLngWcDbfI/data/11d1126a3/56f4e15745594668a35ae71cd3f825be [2021-10-11 02:27:31,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:31,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:31,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:31,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:31,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:31,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:31" (1/1) ... [2021-10-11 02:27:31,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bff5e1f 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 02:27:31,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:31" (1/1) ... [2021-10-11 02:27:31,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:31,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:31,939 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_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2021-10-11 02:27:31,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:31,952 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:31,981 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_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2021-10-11 02:27:31,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:31,999 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:31,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:31 WrapperNode [2021-10-11 02:27:31,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:32,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:32,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:32,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:32,010 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 02:27:32,019 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 02:27:32,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:32,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:32,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:32,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:32,052 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 02:27:32,053 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 02:27:32,056 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 02:27:32,057 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 02:27:32,065 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 02:27:32,070 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 02:27:32,072 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 02:27:32,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:32,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:32,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:32,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:32,078 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_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/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 02:27:32,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:27:32,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:32,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-11 02:27:32,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:27:32,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-11 02:27:32,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:32,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:32,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:27:32,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:27:32,918 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:32,919 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-11 02:27:32,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:32 BoogieIcfgContainer [2021-10-11 02:27:32,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:32,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:32,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:32,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:32,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:31" (1/3) ... [2021-10-11 02:27:32,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2c4e2a 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 02:27:32,938 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 02:27:32,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2c4e2a 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 02:27:32,939 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 02:27:32,941 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2021-10-11 02:27:32,957 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:32,962 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:27:32,976 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:27:33,018 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:33,022 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:33,022 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:33,022 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:33,022 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:33,023 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:33,023 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:33,024 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:33,040 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2021-10-11 02:27:33,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:27:33,064 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:33,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:33,065 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:33,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:33,072 INFO L82 PathProgramCache]: Analyzing trace with hash 356184293, now seen corresponding path program 1 times [2021-10-11 02:27:33,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:33,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538030337] [2021-10-11 02:27:33,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:33,286 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 02:27:33,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538030337] [2021-10-11 02:27:33,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:33,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:33,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441483971] [2021-10-11 02:27:33,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:27:33,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:33,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:27:33,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:27:33,317 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2021-10-11 02:27:33,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:33,339 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2021-10-11 02:27:33,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:27:33,341 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-10-11 02:27:33,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:33,354 INFO L225 Difference]: With dead ends: 35 [2021-10-11 02:27:33,354 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:27:33,358 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 02:27:33,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:27:33,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 02:27:33,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:27:33,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-10-11 02:27:33,404 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 8 [2021-10-11 02:27:33,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:33,405 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-10-11 02:27:33,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:27:33,405 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-10-11 02:27:33,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:27:33,406 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:33,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:33,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:27:33,408 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:33,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:33,411 INFO L82 PathProgramCache]: Analyzing trace with hash -2014115286, now seen corresponding path program 1 times [2021-10-11 02:27:33,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:33,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267722012] [2021-10-11 02:27:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:27:33,519 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:27:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:27:33,553 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:27:33,576 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:27:33,576 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:27:33,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:27:33,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:33 BoogieIcfgContainer [2021-10-11 02:27:33,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:33,602 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:33,602 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:33,602 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:33,602 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 02:27:33,605 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:27:33,605 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:33,607 INFO L168 Benchmark]: Toolchain (without parser) took 1991.05 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 82.4 MB in the beginning and 96.6 MB in the end (delta: -14.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:33,608 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 113.2 MB. Free memory was 69.5 MB in the beginning and 69.5 MB in the end (delta: 54.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:33,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.97 ms. Allocated memory is still 113.2 MB. Free memory was 82.2 MB in the beginning and 87.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:33,609 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.15 ms. Allocated memory is still 113.2 MB. Free memory was 87.5 MB in the beginning and 85.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:33,610 INFO L168 Benchmark]: Boogie Preprocessor took 32.75 ms. Allocated memory is still 113.2 MB. Free memory was 85.9 MB in the beginning and 84.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:33,611 INFO L168 Benchmark]: RCFGBuilder took 848.23 ms. Allocated memory is still 113.2 MB. Free memory was 84.3 MB in the beginning and 60.8 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:33,611 INFO L168 Benchmark]: TraceAbstraction took 670.49 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 60.3 MB in the beginning and 96.6 MB in the end (delta: -36.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:33,612 INFO L168 Benchmark]: Witness Printer took 3.86 ms. Allocated memory is still 136.3 MB. Free memory is still 96.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:33,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 113.2 MB. Free memory was 69.5 MB in the beginning and 69.5 MB in the end (delta: 54.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 380.97 ms. Allocated memory is still 113.2 MB. Free memory was 82.2 MB in the beginning and 87.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.15 ms. Allocated memory is still 113.2 MB. Free memory was 87.5 MB in the beginning and 85.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.75 ms. Allocated memory is still 113.2 MB. Free memory was 85.9 MB in the beginning and 84.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 848.23 ms. Allocated memory is still 113.2 MB. Free memory was 84.3 MB in the beginning and 60.8 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 670.49 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 60.3 MB in the beginning and 96.6 MB in the end (delta: -36.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.86 ms. Allocated memory is still 136.3 MB. Free memory is still 96.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 81]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L76] double x = 0.0 / 0.0; [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L29] COND FALSE !(exponent_less_1023 < 20) [L43] COND TRUE exponent_less_1023 > 51 [L44] COND TRUE exponent_less_1023 == 1024 [L45] return x + x; [L77] double res = round_double(x); [L17] return x != x; [L80] COND TRUE !isnan_double(res) [L81] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 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 02:27:36,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:36,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:36,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:36,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:36,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:36,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:36,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:36,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:36,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:36,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:36,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:36,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:36,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:36,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:36,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:36,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:36,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:36,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:36,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:36,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:36,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:36,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:36,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:36,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:36,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:36,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:36,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:36,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:36,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:36,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:36,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:36,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:36,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:36,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:36,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:36,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:36,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:36,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:36,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:36,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:36,210 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:27:36,247 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:36,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:36,248 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:36,249 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:36,249 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:36,250 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:36,250 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:36,250 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:36,250 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:36,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:36,253 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:36,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:36,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:36,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:36,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:36,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:36,254 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:36,254 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:27:36,254 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:27:36,254 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:36,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:36,255 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:36,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:36,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:36,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:27:36,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:36,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:36,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:36,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:36,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:36,257 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:27:36,257 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:27:36,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:36,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:36,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:36,258 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_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c4d19baf0429684b688f90d909ef640d9fb6537 [2021-10-11 02:27:36,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:36,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:36,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:36,644 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:36,645 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:36,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-10-11 02:27:36,730 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/bin/utaipan-WLngWcDbfI/data/55fe6f251/de2b1f97362046ea889787663d01ac4d/FLAG818594f49 [2021-10-11 02:27:37,295 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:37,299 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-10-11 02:27:37,306 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/bin/utaipan-WLngWcDbfI/data/55fe6f251/de2b1f97362046ea889787663d01ac4d/FLAG818594f49 [2021-10-11 02:27:37,642 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/bin/utaipan-WLngWcDbfI/data/55fe6f251/de2b1f97362046ea889787663d01ac4d [2021-10-11 02:27:37,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:37,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:37,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:37,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:37,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:37,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:37" (1/1) ... [2021-10-11 02:27:37,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1749642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:37, skipping insertion in model container [2021-10-11 02:27:37,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:37" (1/1) ... [2021-10-11 02:27:37,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:37,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:37,872 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_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2021-10-11 02:27:37,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:37,889 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:37,923 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_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2021-10-11 02:27:37,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:37,955 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:37,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:37 WrapperNode [2021-10-11 02:27:37,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:37,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:37,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:37,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:37,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:37" (1/1) ... [2021-10-11 02:27:37,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:37" (1/1) ... [2021-10-11 02:27:38,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:38,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:38,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:38,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:38,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:37" (1/1) ... [2021-10-11 02:27:38,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:37" (1/1) ... [2021-10-11 02:27:38,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:37" (1/1) ... [2021-10-11 02:27:38,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:37" (1/1) ... [2021-10-11 02:27:38,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:37" (1/1) ... [2021-10-11 02:27:38,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:37" (1/1) ... [2021-10-11 02:27:38,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:37" (1/1) ... [2021-10-11 02:27:38,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:38,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:38,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:38,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:38,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:37" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/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 02:27:38,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-11 02:27:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-11 02:27:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:27:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 02:27:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:38,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-11 02:27:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:27:38,850 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:38,851 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-11 02:27:38,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:38 BoogieIcfgContainer [2021-10-11 02:27:38,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:38,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:38,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:38,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:38,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:37" (1/3) ... [2021-10-11 02:27:38,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0b9206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:38, skipping insertion in model container [2021-10-11 02:27:38,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:37" (2/3) ... [2021-10-11 02:27:38,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0b9206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:38, skipping insertion in model container [2021-10-11 02:27:38,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:38" (3/3) ... [2021-10-11 02:27:38,862 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2021-10-11 02:27:38,878 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:38,881 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:27:38,891 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:27:38,930 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:38,930 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:38,931 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:38,931 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:38,931 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:38,931 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:38,931 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:38,932 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:38,945 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2021-10-11 02:27:38,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:27:38,953 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:38,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:38,954 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:38,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:38,962 INFO L82 PathProgramCache]: Analyzing trace with hash 2068161395, now seen corresponding path program 1 times [2021-10-11 02:27:39,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:39,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129821715] [2021-10-11 02:27:39,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/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 02:27:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:39,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:27:39,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:39,264 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 02:27:39,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:39,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129821715] [2021-10-11 02:27:39,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:39,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:39,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723475367] [2021-10-11 02:27:39,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:27:39,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:39,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:27:39,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:27:39,285 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2021-10-11 02:27:39,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:39,301 INFO L93 Difference]: Finished difference Result 50 states and 74 transitions. [2021-10-11 02:27:39,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:27:39,302 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2021-10-11 02:27:39,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:39,311 INFO L225 Difference]: With dead ends: 50 [2021-10-11 02:27:39,311 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 02:27:39,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 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 02:27:39,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 02:27:39,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-11 02:27:39,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 02:27:39,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2021-10-11 02:27:39,344 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 11 [2021-10-11 02:27:39,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:39,344 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2021-10-11 02:27:39,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:27:39,345 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2021-10-11 02:27:39,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:27:39,345 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:39,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:39,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:27:39,565 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:39,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:39,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1606884976, now seen corresponding path program 1 times [2021-10-11 02:27:39,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:39,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074175608] [2021-10-11 02:27:39,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/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 02:27:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:39,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 02:27:39,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:39,832 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 02:27:39,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:39,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074175608] [2021-10-11 02:27:39,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:39,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:27:39,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558834564] [2021-10-11 02:27:39,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:27:39,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:39,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:27:39,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:27:39,836 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand 6 states. [2021-10-11 02:27:40,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:40,354 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2021-10-11 02:27:40,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:27:40,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-10-11 02:27:40,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:40,358 INFO L225 Difference]: With dead ends: 28 [2021-10-11 02:27:40,358 INFO L226 Difference]: Without dead ends: 22 [2021-10-11 02:27:40,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:27:40,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-11 02:27:40,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-11 02:27:40,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-11 02:27:40,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-10-11 02:27:40,364 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2021-10-11 02:27:40,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:40,364 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-10-11 02:27:40,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:27:40,364 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-10-11 02:27:40,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:27:40,365 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:40,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:40,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:27:40,576 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:40,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:40,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1251020519, now seen corresponding path program 1 times [2021-10-11 02:27:40,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:40,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907567355] [2021-10-11 02:27:40,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/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 02:27:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:40,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:27:40,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:40,862 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 02:27:40,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:40,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907567355] [2021-10-11 02:27:40,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:40,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:27:40,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043480972] [2021-10-11 02:27:40,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:27:40,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:40,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:27:40,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:40,866 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2021-10-11 02:27:41,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:41,053 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-10-11 02:27:41,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:27:41,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-10-11 02:27:41,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:41,054 INFO L225 Difference]: With dead ends: 22 [2021-10-11 02:27:41,054 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:27:41,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:27:41,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:27:41,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:27:41,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:27:41,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:27:41,056 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-11 02:27:41,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:41,056 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:27:41,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:27:41,056 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:27:41,056 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:27:41,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:27:41,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:27:41,392 INFO L265 CegarLoopResult]: At program point L85(lines 68 86) the Hoare annotation is: true [2021-10-11 02:27:41,392 INFO L262 CegarLoopResult]: For program point L81(line 81) no Hoare annotation was computed. [2021-10-11 02:27:41,392 INFO L262 CegarLoopResult]: For program point L44(lines 44 47) no Hoare annotation was computed. [2021-10-11 02:27:41,393 INFO L258 CegarLoopResult]: At program point L65(lines 19 66) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_round_double_#res|)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_round_double_~x))) [2021-10-11 02:27:41,393 INFO L262 CegarLoopResult]: For program point L32(lines 32 33) no Hoare annotation was computed. [2021-10-11 02:27:41,393 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 02:27:41,393 INFO L262 CegarLoopResult]: For program point L32-2(lines 32 33) no Hoare annotation was computed. [2021-10-11 02:27:41,393 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:27:41,393 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 02:27:41,393 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 81) no Hoare annotation was computed. [2021-10-11 02:27:41,393 INFO L262 CegarLoopResult]: For program point L37(lines 37 38) no Hoare annotation was computed. [2021-10-11 02:27:41,393 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:27:41,394 INFO L262 CegarLoopResult]: For program point L29(lines 29 58) no Hoare annotation was computed. [2021-10-11 02:27:41,394 INFO L262 CegarLoopResult]: For program point L54(lines 54 55) no Hoare annotation was computed. [2021-10-11 02:27:41,394 INFO L262 CegarLoopResult]: For program point L54-2(lines 54 55) no Hoare annotation was computed. [2021-10-11 02:27:41,394 INFO L258 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_round_double_#res|)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_round_double_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2021-10-11 02:27:41,394 INFO L262 CegarLoopResult]: For program point L30(lines 30 42) no Hoare annotation was computed. [2021-10-11 02:27:41,394 INFO L262 CegarLoopResult]: For program point L59(lines 59 64) no Hoare annotation was computed. [2021-10-11 02:27:41,394 INFO L262 CegarLoopResult]: For program point L59-1(lines 19 66) no Hoare annotation was computed. [2021-10-11 02:27:41,394 INFO L262 CegarLoopResult]: For program point L59-2(lines 59 64) no Hoare annotation was computed. [2021-10-11 02:27:41,394 INFO L262 CegarLoopResult]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2021-10-11 02:27:41,395 INFO L258 CegarLoopResult]: At program point L22-2(lines 22 27) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_round_double_~x)) [2021-10-11 02:27:41,395 INFO L262 CegarLoopResult]: For program point L22-3(lines 22 27) no Hoare annotation was computed. [2021-10-11 02:27:41,395 INFO L262 CegarLoopResult]: For program point L51(lines 51 52) no Hoare annotation was computed. [2021-10-11 02:27:41,395 INFO L262 CegarLoopResult]: For program point L80(lines 80 83) no Hoare annotation was computed. [2021-10-11 02:27:41,395 INFO L262 CegarLoopResult]: For program point L43(lines 43 58) no Hoare annotation was computed. [2021-10-11 02:27:41,403 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 02:27:41,403 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 02:27:41,408 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 02:27:41,408 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 02:27:41,410 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 02:27:41,410 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 02:27:41,411 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 02:27:41,411 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 02:27:41,411 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 02:27:41,412 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 02:27:41,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:41 BoogieIcfgContainer [2021-10-11 02:27:41,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:41,414 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:41,414 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:41,414 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:41,415 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:38" (3/4) ... [2021-10-11 02:27:41,418 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:27:41,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-11 02:27:41,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-11 02:27:41,429 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:27:41,429 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:41,453 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2021-10-11 02:27:41,454 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2021-10-11 02:27:41,455 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x)) && 1bv32 == \result [2021-10-11 02:27:41,476 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99579c0a-9d7d-42ae-8a95-e2c6abc65ebf/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:41,476 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:41,478 INFO L168 Benchmark]: Toolchain (without parser) took 3824.91 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 44.5 MB in the beginning and 41.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:41,478 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 79.7 MB. Free memory was 61.0 MB in the beginning and 60.9 MB in the end (delta: 72.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:41,479 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.18 ms. Allocated memory is still 79.7 MB. Free memory was 44.2 MB in the beginning and 62.6 MB in the end (delta: -18.4 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:41,479 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.61 ms. Allocated memory is still 79.7 MB. Free memory was 62.6 MB in the beginning and 60.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:41,480 INFO L168 Benchmark]: Boogie Preprocessor took 59.20 ms. Allocated memory is still 79.7 MB. Free memory was 60.9 MB in the beginning and 59.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:41,480 INFO L168 Benchmark]: RCFGBuilder took 780.47 ms. Allocated memory is still 79.7 MB. Free memory was 59.4 MB in the beginning and 41.3 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:41,498 INFO L168 Benchmark]: TraceAbstraction took 2559.23 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 40.9 MB in the beginning and 44.5 MB in the end (delta: -3.6 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:41,499 INFO L168 Benchmark]: Witness Printer took 62.19 ms. Allocated memory is still 98.6 MB. Free memory was 44.5 MB in the beginning and 41.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:41,502 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 79.7 MB. Free memory was 61.0 MB in the beginning and 60.9 MB in the end (delta: 72.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.18 ms. Allocated memory is still 79.7 MB. Free memory was 44.2 MB in the beginning and 62.6 MB in the end (delta: -18.4 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.61 ms. Allocated memory is still 79.7 MB. Free memory was 62.6 MB in the beginning and 60.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.20 ms. Allocated memory is still 79.7 MB. Free memory was 60.9 MB in the beginning and 59.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 780.47 ms. Allocated memory is still 79.7 MB. Free memory was 59.4 MB in the beginning and 41.3 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2559.23 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 40.9 MB in the beginning and 44.5 MB in the end (delta: -3.6 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. * Witness Printer took 62.19 ms. Allocated memory is still 98.6 MB. Free memory was 44.5 MB in the beginning and 41.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 81]: 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: 68]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant [2021-10-11 02:27:41,509 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 02:27:41,510 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 02:27:41,516 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 02:27:41,517 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 17]: Loop Invariant [2021-10-11 02:27:41,518 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 02:27:41,518 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 02:27:41,519 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 02:27:41,519 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x)) && 1bv32 == \result - InvariantResult [Line: 22]: Loop Invariant [2021-10-11 02:27:41,519 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 02:27:41,520 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 59 SDtfs, 28 SDslu, 76 SDs, 0 SdLazy, 35 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 41 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 11 QuantifiedInterpolants, 1805 SizeOfPredicates, 16 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 19 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...