./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d ............................................................................................................................................................................................................................................................................................................. 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_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d ............................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:50:52,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:50:52,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:50:52,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:50:52,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:50:52,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:50:52,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:50:52,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:50:52,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:50:52,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:50:52,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:50:52,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:50:52,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:50:52,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:50:52,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:50:52,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:50:52,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:50:52,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:50:52,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:50:52,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:50:52,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:50:52,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:50:52,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:50:52,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:50:52,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:50:52,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:50:52,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:50:52,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:50:52,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:50:52,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:50:52,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:50:52,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:50:52,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:50:52,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:50:52,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:50:52,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:50:52,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:50:52,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:50:52,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:50:52,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:50:52,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:50:52,327 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:50:52,368 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:50:52,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:50:52,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:50:52,369 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:50:52,369 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:50:52,369 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:50:52,370 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:50:52,370 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:50:52,370 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:50:52,370 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:50:52,370 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:50:52,371 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:50:52,371 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:50:52,371 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:50:52,371 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:50:52,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:50:52,372 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:50:52,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:50:52,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:50:52,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:50:52,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:50:52,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:50:52,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:50:52,373 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:50:52,374 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:50:52,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:50:52,374 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:50:52,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:50:52,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:50:52,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:50:52,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:50:52,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:50:52,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:50:52,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:50:52,376 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:50:52,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:50:52,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:50:52,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:50:52,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:50:52,377 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_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d [2021-10-13 06:50:52,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:50:52,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:50:52,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:50:52,708 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:50:52,709 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:50:52,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2021-10-13 06:50:52,784 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/data/982661528/dae1e926e6fb4c9186bf80693a0ea673/FLAG6e22d6484 [2021-10-13 06:50:53,368 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:50:53,370 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2021-10-13 06:50:53,384 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/data/982661528/dae1e926e6fb4c9186bf80693a0ea673/FLAG6e22d6484 [2021-10-13 06:50:53,715 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/data/982661528/dae1e926e6fb4c9186bf80693a0ea673 [2021-10-13 06:50:53,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:50:53,719 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:50:53,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:50:53,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:50:53,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:50:53,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:50:53" (1/1) ... [2021-10-13 06:50:53,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@350461a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:53, skipping insertion in model container [2021-10-13 06:50:53,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:50:53" (1/1) ... [2021-10-13 06:50:53,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:50:53,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:50:53,967 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2021-10-13 06:50:53,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:50:53,979 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:50:54,004 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2021-10-13 06:50:54,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:50:54,019 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:50:54,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:54 WrapperNode [2021-10-13 06:50:54,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:50:54,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:50:54,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:50:54,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:50:54,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:54" (1/1) ... [2021-10-13 06:50:54,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:54" (1/1) ... [2021-10-13 06:50:54,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:50:54,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:50:54,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:50:54,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:50:54,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:54" (1/1) ... [2021-10-13 06:50:54,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:54" (1/1) ... [2021-10-13 06:50:54,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:54" (1/1) ... [2021-10-13 06:50:54,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:54" (1/1) ... [2021-10-13 06:50:54,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:54" (1/1) ... [2021-10-13 06:50:54,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:54" (1/1) ... [2021-10-13 06:50:54,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:54" (1/1) ... [2021-10-13 06:50:54,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:50:54,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:50:54,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:50:54,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:50:54,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:54" (1/1) ... [2021-10-13 06:50:54,135 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:50:54,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:50:54,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:50:54,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:50:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:50:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:50:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-13 06:50:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 06:50:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-13 06:50:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:50:54,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:50:54,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 06:50:54,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 06:50:54,547 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:50:54,547 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-13 06:50:54,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:50:54 BoogieIcfgContainer [2021-10-13 06:50:54,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:50:54,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:50:54,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:50:54,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:50:54,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:50:53" (1/3) ... [2021-10-13 06:50:54,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564abbc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:50:54, skipping insertion in model container [2021-10-13 06:50:54,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:54" (2/3) ... [2021-10-13 06:50:54,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564abbc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:50:54, skipping insertion in model container [2021-10-13 06:50:54,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:50:54" (3/3) ... [2021-10-13 06:50:54,572 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2021-10-13 06:50:54,577 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:50:54,577 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:50:54,625 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:50:54,631 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 06:50:54,631 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:50:54,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:50:54,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 06:50:54,653 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:50:54,654 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:50:54,655 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:50:54,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:50:54,662 INFO L82 PathProgramCache]: Analyzing trace with hash -341997226, now seen corresponding path program 1 times [2021-10-13 06:50:54,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:50:54,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381801872] [2021-10-13 06:50:54,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:50:54,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:50:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:50:54,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:50:54,853 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:50:54,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381801872] [2021-10-13 06:50:54,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381801872] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:50:54,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:50:54,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:50:54,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405560696] [2021-10-13 06:50:54,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 06:50:54,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:50:54,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 06:50:54,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:50:54,882 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:50:54,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:50:54,896 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2021-10-13 06:50:54,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 06:50:54,898 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 06:50:54,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:50:54,909 INFO L225 Difference]: With dead ends: 31 [2021-10-13 06:50:54,909 INFO L226 Difference]: Without dead ends: 14 [2021-10-13 06:50:54,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:50:54,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-13 06:50:54,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-13 06:50:54,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:50:54,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-13 06:50:54,941 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2021-10-13 06:50:54,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:50:54,942 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-13 06:50:54,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:50:54,942 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-13 06:50:54,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 06:50:54,943 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:50:54,943 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:50:54,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 06:50:54,944 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:50:54,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:50:54,947 INFO L82 PathProgramCache]: Analyzing trace with hash 141319461, now seen corresponding path program 1 times [2021-10-13 06:50:54,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:50:54,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435525423] [2021-10-13 06:50:54,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:50:54,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:50:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:50:55,095 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 06:50:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:50:55,205 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 06:50:55,205 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 06:50:55,207 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:50:55,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 06:50:55,216 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:50:55,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:50:55 BoogieIcfgContainer [2021-10-13 06:50:55,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:50:55,245 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:50:55,246 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:50:55,246 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:50:55,247 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:50:54" (3/4) ... [2021-10-13 06:50:55,251 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 06:50:55,251 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:50:55,254 INFO L168 Benchmark]: Toolchain (without parser) took 1533.18 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 56.0 MB in the beginning and 88.1 MB in the end (delta: -32.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:50:55,255 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory is still 72.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:50:55,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.62 ms. Allocated memory is still 96.5 MB. Free memory was 55.8 MB in the beginning and 71.7 MB in the end (delta: -15.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:50:55,259 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.71 ms. Allocated memory is still 96.5 MB. Free memory was 71.7 MB in the beginning and 70.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:50:55,260 INFO L168 Benchmark]: Boogie Preprocessor took 47.11 ms. Allocated memory is still 96.5 MB. Free memory was 70.2 MB in the beginning and 68.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:50:55,265 INFO L168 Benchmark]: RCFGBuilder took 443.47 ms. Allocated memory is still 96.5 MB. Free memory was 68.7 MB in the beginning and 52.0 MB in the end (delta: 16.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-13 06:50:55,265 INFO L168 Benchmark]: TraceAbstraction took 678.80 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 51.4 MB in the beginning and 88.7 MB in the end (delta: -37.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:50:55,266 INFO L168 Benchmark]: Witness Printer took 5.91 ms. Allocated memory is still 117.4 MB. Free memory was 88.7 MB in the beginning and 88.1 MB in the end (delta: 585.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:50:55,273 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory is still 72.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.62 ms. Allocated memory is still 96.5 MB. Free memory was 55.8 MB in the beginning and 71.7 MB in the end (delta: -15.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.71 ms. Allocated memory is still 96.5 MB. Free memory was 71.7 MB in the beginning and 70.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.11 ms. Allocated memory is still 96.5 MB. Free memory was 70.2 MB in the beginning and 68.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 443.47 ms. Allocated memory is still 96.5 MB. Free memory was 68.7 MB in the beginning and 52.0 MB in the end (delta: 16.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 678.80 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 51.4 MB in the beginning and 88.7 MB in the end (delta: -37.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.91 ms. Allocated memory is still 117.4 MB. Free memory was 88.7 MB in the beginning and 88.1 MB in the end (delta: 585.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 74]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 59, overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; [L68] float x = 0.0f / 0.0f; [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; VAL [huge_ceil=1000000000000000000000000000000] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f VAL [huge_ceil=1000000000000000000000000000000] [L25] COND FALSE !(j0 < 23) [L45] COND TRUE !((ix) < 0x7f800000L) [L46] return x + x; VAL [huge_ceil=1000000000000000000000000000000] [L70] float res = ceil_float(x); [L59] return x != x; [L73] COND TRUE !isnan_float(res) [L74] reach_error() VAL [huge_ceil=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 591.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 11.8ms, AutomataDifference: 49.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.7ms SsaConstructionTime, 164.8ms SatisfiabilityAnalysisTime, 63.9ms InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 06:50:55,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:50:57,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:50:57,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:50:57,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:50:57,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:50:57,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:50:57,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:50:57,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:50:57,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:50:57,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:50:57,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:50:57,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:50:57,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:50:57,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:50:57,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:50:57,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:50:57,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:50:57,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:50:57,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:50:57,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:50:57,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:50:57,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:50:57,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:50:57,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:50:57,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:50:57,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:50:57,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:50:57,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:50:57,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:50:57,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:50:57,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:50:57,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:50:57,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:50:57,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:50:57,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:50:57,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:50:57,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:50:58,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:50:58,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:50:58,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:50:58,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:50:58,004 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 06:50:58,031 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:50:58,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:50:58,032 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:50:58,033 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:50:58,033 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:50:58,034 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:50:58,034 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:50:58,034 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:50:58,035 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:50:58,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:50:58,036 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:50:58,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:50:58,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:50:58,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:50:58,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:50:58,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:50:58,037 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:50:58,038 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 06:50:58,038 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 06:50:58,038 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:50:58,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:50:58,038 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:50:58,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:50:58,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:50:58,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 06:50:58,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:50:58,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:50:58,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:50:58,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:50:58,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:50:58,040 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 06:50:58,041 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 06:50:58,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:50:58,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:50:58,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:50:58,041 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_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d [2021-10-13 06:50:58,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:50:58,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:50:58,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:50:58,510 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:50:58,512 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:50:58,513 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2021-10-13 06:50:58,595 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/data/23cbb36d7/7c80693b635c4505b9bb7435afcd4050/FLAG203af9cb1 [2021-10-13 06:50:59,164 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:50:59,165 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2021-10-13 06:50:59,172 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/data/23cbb36d7/7c80693b635c4505b9bb7435afcd4050/FLAG203af9cb1 [2021-10-13 06:50:59,519 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/data/23cbb36d7/7c80693b635c4505b9bb7435afcd4050 [2021-10-13 06:50:59,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:50:59,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:50:59,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:50:59,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:50:59,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:50:59,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:50:59" (1/1) ... [2021-10-13 06:50:59,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c108ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:59, skipping insertion in model container [2021-10-13 06:50:59,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:50:59" (1/1) ... [2021-10-13 06:50:59,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:50:59,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:50:59,771 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2021-10-13 06:50:59,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:50:59,795 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:50:59,847 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2021-10-13 06:50:59,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:50:59,864 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:50:59,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:59 WrapperNode [2021-10-13 06:50:59,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:50:59,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:50:59,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:50:59,867 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:50:59,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:59" (1/1) ... [2021-10-13 06:50:59,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:59" (1/1) ... [2021-10-13 06:50:59,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:50:59,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:50:59,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:50:59,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:50:59,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:59" (1/1) ... [2021-10-13 06:50:59,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:59" (1/1) ... [2021-10-13 06:50:59,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:59" (1/1) ... [2021-10-13 06:50:59,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:59" (1/1) ... [2021-10-13 06:50:59,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:59" (1/1) ... [2021-10-13 06:50:59,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:59" (1/1) ... [2021-10-13 06:50:59,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:59" (1/1) ... [2021-10-13 06:50:59,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:50:59,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:50:59,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:50:59,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:50:59,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:59" (1/1) ... [2021-10-13 06:50:59,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:50:59,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:50:59,972 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:51:00,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:51:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 06:51:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:51:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-13 06:51:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 06:51:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:51:00,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:51:00,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-13 06:51:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 06:51:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 06:51:00,889 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:51:00,889 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-13 06:51:00,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:51:00 BoogieIcfgContainer [2021-10-13 06:51:00,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:51:00,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:51:00,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:51:00,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:51:00,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:50:59" (1/3) ... [2021-10-13 06:51:00,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db76ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:51:00, skipping insertion in model container [2021-10-13 06:51:00,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:50:59" (2/3) ... [2021-10-13 06:51:00,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db76ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:51:00, skipping insertion in model container [2021-10-13 06:51:00,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:51:00" (3/3) ... [2021-10-13 06:51:00,905 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2021-10-13 06:51:00,911 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:51:00,911 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:51:00,979 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:51:00,989 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 06:51:00,990 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:51:01,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:51:01,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 06:51:01,026 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:51:01,027 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:51:01,027 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:51:01,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:51:01,033 INFO L82 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2021-10-13 06:51:01,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:51:01,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512276803] [2021-10-13 06:51:01,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:51:01,051 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:51:01,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:51:01,056 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:51:01,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 06:51:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:51:01,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 06:51:01,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:51:01,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:51:01,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:51:01,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:51:01,269 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:51:01,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512276803] [2021-10-13 06:51:01,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512276803] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:51:01,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:51:01,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 06:51:01,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632503197] [2021-10-13 06:51:01,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 06:51:01,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:51:01,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 06:51:01,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:51:01,295 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:51:01,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:51:01,311 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2021-10-13 06:51:01,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 06:51:01,313 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 06:51:01,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:51:01,322 INFO L225 Difference]: With dead ends: 50 [2021-10-13 06:51:01,322 INFO L226 Difference]: Without dead ends: 23 [2021-10-13 06:51:01,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:51:01,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-13 06:51:01,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-13 06:51:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:51:01,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2021-10-13 06:51:01,371 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2021-10-13 06:51:01,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:51:01,371 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2021-10-13 06:51:01,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:51:01,372 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2021-10-13 06:51:01,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 06:51:01,373 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:51:01,373 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:51:01,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:51:01,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:51:01,577 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:51:01,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:51:01,578 INFO L82 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2021-10-13 06:51:01,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:51:01,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828057607] [2021-10-13 06:51:01,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:51:01,580 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:51:01,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:51:01,581 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:51:01,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 06:51:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:51:01,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 06:51:01,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:51:02,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:51:02,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:51:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:51:02,209 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:51:02,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828057607] [2021-10-13 06:51:02,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828057607] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:51:02,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:51:02,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-13 06:51:02,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900413377] [2021-10-13 06:51:02,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 06:51:02,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:51:02,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 06:51:02,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 06:51:02,216 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:51:02,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:51:02,799 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2021-10-13 06:51:02,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 06:51:02,800 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 06:51:02,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:51:02,801 INFO L225 Difference]: With dead ends: 34 [2021-10-13 06:51:02,801 INFO L226 Difference]: Without dead ends: 18 [2021-10-13 06:51:02,803 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 330.0ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-13 06:51:02,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-13 06:51:02,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-13 06:51:02,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:51:02,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-13 06:51:02,807 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2021-10-13 06:51:02,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:51:02,807 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-13 06:51:02,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:51:02,808 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-13 06:51:02,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 06:51:02,809 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:51:02,809 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:51:02,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 06:51:03,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:51:03,024 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:51:03,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:51:03,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1612289523, now seen corresponding path program 1 times [2021-10-13 06:51:03,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:51:03,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933922431] [2021-10-13 06:51:03,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:51:03,026 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:51:03,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:51:03,027 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:51:03,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 06:51:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:51:03,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 06:51:03,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:51:03,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:51:03,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:51:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:51:03,639 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:51:03,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933922431] [2021-10-13 06:51:03,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933922431] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:51:03,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:51:03,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 06:51:03,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829163544] [2021-10-13 06:51:03,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 06:51:03,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:51:03,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 06:51:03,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 06:51:03,644 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:51:03,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:51:03,771 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-13 06:51:03,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 06:51:03,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 06:51:03,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:51:03,771 INFO L225 Difference]: With dead ends: 18 [2021-10-13 06:51:03,772 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 06:51:03,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 271.7ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-13 06:51:03,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 06:51:03,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 06:51:03,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:51:03,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 06:51:03,773 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-13 06:51:03,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:51:03,773 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 06:51:03,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:51:03,774 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 06:51:03,774 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 06:51:03,776 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:51:03,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 06:51:03,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:51:03,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 06:51:03,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:51:04,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:51:04,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:51:04,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:51:04,088 INFO L857 garLoopResultBuilder]: For program point L27(lines 27 33) no Hoare annotation was computed. [2021-10-13 06:51:04,088 INFO L857 garLoopResultBuilder]: For program point L73(lines 73 76) no Hoare annotation was computed. [2021-10-13 06:51:04,089 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-10-13 06:51:04,089 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 06:51:04,089 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 06:51:04,089 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 06:51:04,089 INFO L857 garLoopResultBuilder]: For program point L28(lines 28 32) no Hoare annotation was computed. [2021-10-13 06:51:04,090 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 74) no Hoare annotation was computed. [2021-10-13 06:51:04,090 INFO L860 garLoopResultBuilder]: At program point L78(lines 61 79) the Hoare annotation is: true [2021-10-13 06:51:04,090 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 48) no Hoare annotation was computed. [2021-10-13 06:51:04,090 INFO L857 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-10-13 06:51:04,090 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 06:51:04,090 INFO L857 garLoopResultBuilder]: For program point L25(lines 25 49) no Hoare annotation was computed. [2021-10-13 06:51:04,091 INFO L857 garLoopResultBuilder]: For program point L50(lines 50 54) no Hoare annotation was computed. [2021-10-13 06:51:04,091 INFO L857 garLoopResultBuilder]: For program point L50-1(lines 15 56) no Hoare annotation was computed. [2021-10-13 06:51:04,091 INFO L857 garLoopResultBuilder]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2021-10-13 06:51:04,091 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 42) no Hoare annotation was computed. [2021-10-13 06:51:04,091 INFO L857 garLoopResultBuilder]: For program point L30(lines 30 32) no Hoare annotation was computed. [2021-10-13 06:51:04,092 INFO L853 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_ceil_float_~x ULTIMATE.start_ceil_float_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_ceil_float_#res|))) [2021-10-13 06:51:04,092 INFO L857 garLoopResultBuilder]: For program point L26(lines 26 43) no Hoare annotation was computed. [2021-10-13 06:51:04,092 INFO L853 garLoopResultBuilder]: At program point L55(lines 15 56) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_ceil_float_~x ULTIMATE.start_ceil_float_~x)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_ceil_float_#res|))) [2021-10-13 06:51:04,092 INFO L857 garLoopResultBuilder]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2021-10-13 06:51:04,092 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 18 22) the Hoare annotation is: (not (fp.eq ULTIMATE.start_ceil_float_~x ULTIMATE.start_ceil_float_~x)) [2021-10-13 06:51:04,092 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 22) no Hoare annotation was computed. [2021-10-13 06:51:04,093 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 40) no Hoare annotation was computed. [2021-10-13 06:51:04,093 INFO L857 garLoopResultBuilder]: For program point L39-2(lines 39 40) no Hoare annotation was computed. [2021-10-13 06:51:04,098 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:51:04,103 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 06:51:04,110 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 06:51:04,112 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 06:51:04,112 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 06:51:04,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:51:04 BoogieIcfgContainer [2021-10-13 06:51:04,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:51:04,114 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:51:04,114 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:51:04,114 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:51:04,115 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:51:00" (3/4) ... [2021-10-13 06:51:04,118 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 06:51:04,129 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-13 06:51:04,129 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 06:51:04,130 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 06:51:04,130 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 06:51:04,157 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~FLOAT(x, x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) [2021-10-13 06:51:04,158 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) [2021-10-13 06:51:04,176 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:51:04,176 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:51:04,178 INFO L168 Benchmark]: Toolchain (without parser) took 4654.35 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 53.7 MB in the beginning and 78.9 MB in the end (delta: -25.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 16.1 GB. [2021-10-13 06:51:04,179 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory was 70.1 MB in the beginning and 70.1 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:51:04,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.03 ms. Allocated memory is still 88.1 MB. Free memory was 53.4 MB in the beginning and 70.7 MB in the end (delta: -17.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:51:04,180 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.92 ms. Allocated memory is still 88.1 MB. Free memory was 70.4 MB in the beginning and 68.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:51:04,181 INFO L168 Benchmark]: Boogie Preprocessor took 33.18 ms. Allocated memory is still 88.1 MB. Free memory was 68.8 MB in the beginning and 67.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:51:04,181 INFO L168 Benchmark]: RCFGBuilder took 950.91 ms. Allocated memory is still 88.1 MB. Free memory was 67.3 MB in the beginning and 55.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:51:04,183 INFO L168 Benchmark]: TraceAbstraction took 3217.94 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 55.0 MB in the beginning and 81.9 MB in the end (delta: -26.9 MB). Peak memory consumption was 887.5 kB. Max. memory is 16.1 GB. [2021-10-13 06:51:04,184 INFO L168 Benchmark]: Witness Printer took 62.78 ms. Allocated memory is still 113.2 MB. Free memory was 81.9 MB in the beginning and 78.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:51:04,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory was 70.1 MB in the beginning and 70.1 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 341.03 ms. Allocated memory is still 88.1 MB. Free memory was 53.4 MB in the beginning and 70.7 MB in the end (delta: -17.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.92 ms. Allocated memory is still 88.1 MB. Free memory was 70.4 MB in the beginning and 68.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.18 ms. Allocated memory is still 88.1 MB. Free memory was 68.8 MB in the beginning and 67.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 950.91 ms. Allocated memory is still 88.1 MB. Free memory was 67.3 MB in the beginning and 55.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3217.94 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 55.0 MB in the beginning and 81.9 MB in the end (delta: -26.9 MB). Peak memory consumption was 887.5 kB. Max. memory is 16.1 GB. * Witness Printer took 62.78 ms. Allocated memory is still 113.2 MB. Free memory was 81.9 MB in the beginning and 78.9 MB in the end (delta: 2.9 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] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 74]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3120.7ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 23.7ms, AutomataDifference: 765.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 98.1ms, InitialAbstractionConstructionTime: 14.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 51 SDtfs, 23 SDslu, 49 SDs, 0 SdLazy, 39 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 378.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 601.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 21.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 32 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 45.8ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 45.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 42.4ms SsaConstructionTime, 245.5ms SatisfiabilityAnalysisTime, 1009.4ms InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 11 QuantifiedInterpolants, 224 SizeOfPredicates, 19 NumberOfNonLiveVariables, 142 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 59]: Loop Invariant [2021-10-13 06:51:04,208 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 06:51:04,208 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant [2021-10-13 06:51:04,210 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 06:51:04,210 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: !~fp.eq~FLOAT(x, x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) RESULT: Ultimate proved your program to be correct! [2021-10-13 06:51:04,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376dbc3f-3ff9-468e-988e-24971b26cc55/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...