./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE --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 b589368e94c5bf428f982c3f177e2b11fa3048a410e00e940a504ad7d373847b ....................................................................................................................................................................................................................................................................................................... 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_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE --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 b589368e94c5bf428f982c3f177e2b11fa3048a410e00e940a504ad7d373847b ................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:59:04,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:59:04,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:59:04,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:59:04,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:59:04,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:59:04,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:59:04,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:59:04,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:59:04,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:59:04,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:59:04,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:59:04,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:59:04,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:59:04,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:59:04,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:59:04,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:59:04,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:59:04,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:59:04,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:59:04,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:59:04,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:59:04,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:59:04,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:59:04,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:59:04,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:59:04,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:59:04,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:59:04,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:59:04,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:59:04,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:59:04,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:59:04,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:59:04,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:59:04,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:59:04,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:59:04,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:59:04,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:59:04,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:59:04,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:59:04,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:59:04,444 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:59:04,468 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:59:04,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:59:04,469 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:59:04,469 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:59:04,469 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:59:04,470 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:59:04,470 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:59:04,470 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:59:04,470 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:59:04,470 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:59:04,471 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:59:04,471 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:59:04,471 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:59:04,471 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:59:04,471 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:59:04,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:59:04,472 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:59:04,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:59:04,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:59:04,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:59:04,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:59:04,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:59:04,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:59:04,473 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:59:04,474 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:59:04,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:59:04,474 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:59:04,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:59:04,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:59:04,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:59:04,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:59:04,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:59:04,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:59:04,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:59:04,476 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:59:04,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:59:04,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:59:04,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:59:04,476 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:59:04,477 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_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b589368e94c5bf428f982c3f177e2b11fa3048a410e00e940a504ad7d373847b [2021-10-24 10:59:04,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:59:04,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:59:04,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:59:04,714 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:59:04,715 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:59:04,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2021-10-24 10:59:04,827 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/data/0acd3f206/6d420a5bff8a47738c32503282059728/FLAGe3dd8c9db [2021-10-24 10:59:05,271 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:59:05,272 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2021-10-24 10:59:05,283 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/data/0acd3f206/6d420a5bff8a47738c32503282059728/FLAGe3dd8c9db [2021-10-24 10:59:05,646 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/data/0acd3f206/6d420a5bff8a47738c32503282059728 [2021-10-24 10:59:05,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:59:05,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:59:05,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:59:05,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:59:05,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:59:05,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:59:05" (1/1) ... [2021-10-24 10:59:05,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22274c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:05, skipping insertion in model container [2021-10-24 10:59:05,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:59:05" (1/1) ... [2021-10-24 10:59:05,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:59:05,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:59:05,859 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_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/sv-benchmarks/c/float-newlib/float_req_bl_1010.c[999,1012] [2021-10-24 10:59:05,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:59:05,870 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:59:05,915 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_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/sv-benchmarks/c/float-newlib/float_req_bl_1010.c[999,1012] [2021-10-24 10:59:05,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:59:05,933 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:59:05,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:05 WrapperNode [2021-10-24 10:59:05,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:59:05,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:59:05,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:59:05,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:59:05,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:05" (1/1) ... [2021-10-24 10:59:05,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:05" (1/1) ... [2021-10-24 10:59:05,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:59:05,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:59:05,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:59:05,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:59:06,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:05" (1/1) ... [2021-10-24 10:59:06,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:05" (1/1) ... [2021-10-24 10:59:06,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:05" (1/1) ... [2021-10-24 10:59:06,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:05" (1/1) ... [2021-10-24 10:59:06,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:05" (1/1) ... [2021-10-24 10:59:06,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:05" (1/1) ... [2021-10-24 10:59:06,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:05" (1/1) ... [2021-10-24 10:59:06,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:59:06,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:59:06,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:59:06,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:59:06,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:05" (1/1) ... [2021-10-24 10:59:06,042 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:59:06,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:59:06,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:59:06,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:59:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:59:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:59:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-24 10:59:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 10:59:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-24 10:59:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:59:06,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:59:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 10:59:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:59:06,333 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:59:06,333 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-24 10:59:06,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:59:06 BoogieIcfgContainer [2021-10-24 10:59:06,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:59:06,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:59:06,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:59:06,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:59:06,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:59:05" (1/3) ... [2021-10-24 10:59:06,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c0e316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:59:06, skipping insertion in model container [2021-10-24 10:59:06,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:05" (2/3) ... [2021-10-24 10:59:06,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c0e316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:59:06, skipping insertion in model container [2021-10-24 10:59:06,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:59:06" (3/3) ... [2021-10-24 10:59:06,344 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c [2021-10-24 10:59:06,349 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:59:06,349 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:59:06,436 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:59:06,442 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:59:06,443 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:59:06,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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) [2021-10-24 10:59:06,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:59:06,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:59:06,465 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:59:06,466 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:59:06,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:59:06,475 INFO L82 PathProgramCache]: Analyzing trace with hash 2102691160, now seen corresponding path program 1 times [2021-10-24 10:59:06,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:59:06,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702014911] [2021-10-24 10:59:06,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:59:06,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:59:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:59:06,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:59:06,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:59:06,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702014911] [2021-10-24 10:59:06,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702014911] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:59:06,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:59:06,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:59:06,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429513409] [2021-10-24 10:59:06,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:59:06,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:59:06,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:59:06,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:59:06,637 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-24 10:59:06,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:59:06,646 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2021-10-24 10:59:06,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:59:06,648 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-10-24 10:59:06,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:59:06,654 INFO L225 Difference]: With dead ends: 21 [2021-10-24 10:59:06,654 INFO L226 Difference]: Without dead ends: 9 [2021-10-24 10:59:06,656 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 [2021-10-24 10:59:06,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-24 10:59:06,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-24 10:59:06,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:06,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-24 10:59:06,682 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 6 [2021-10-24 10:59:06,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:59:06,682 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-24 10:59:06,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-24 10:59:06,683 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-24 10:59:06,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:59:06,683 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:59:06,683 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:59:06,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:59:06,684 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:59:06,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:59:06,685 INFO L82 PathProgramCache]: Analyzing trace with hash -291150277, now seen corresponding path program 1 times [2021-10-24 10:59:06,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:59:06,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541859546] [2021-10-24 10:59:06,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:59:06,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:59:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:59:06,729 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:59:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:59:06,790 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:59:06,790 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:59:06,792 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:59:06,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:59:06,799 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:59:06,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:59:06 BoogieIcfgContainer [2021-10-24 10:59:06,817 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:59:06,818 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:59:06,818 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:59:06,819 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:59:06,819 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:59:06" (3/4) ... [2021-10-24 10:59:06,822 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:59:06,822 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:59:06,824 INFO L168 Benchmark]: Toolchain (without parser) took 1173.03 ms. Allocated memory is still 123.7 MB. Free memory was 90.4 MB in the beginning and 62.5 MB in the end (delta: 27.9 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:06,824 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory is still 38.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:59:06,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.35 ms. Allocated memory is still 123.7 MB. Free memory was 90.1 MB in the beginning and 100.7 MB in the end (delta: -10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:06,826 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.88 ms. Allocated memory is still 123.7 MB. Free memory was 100.7 MB in the beginning and 99.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:59:06,826 INFO L168 Benchmark]: Boogie Preprocessor took 37.51 ms. Allocated memory is still 123.7 MB. Free memory was 99.2 MB in the beginning and 98.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:06,827 INFO L168 Benchmark]: RCFGBuilder took 305.54 ms. Allocated memory is still 123.7 MB. Free memory was 98.1 MB in the beginning and 86.6 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:06,828 INFO L168 Benchmark]: TraceAbstraction took 480.18 ms. Allocated memory is still 123.7 MB. Free memory was 86.1 MB in the beginning and 63.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:06,829 INFO L168 Benchmark]: Witness Printer took 3.87 ms. Allocated memory is still 123.7 MB. Free memory was 63.0 MB in the beginning and 62.5 MB in the end (delta: 544.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:59:06,832 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 83.9 MB. Free memory is still 38.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 282.35 ms. Allocated memory is still 123.7 MB. Free memory was 90.1 MB in the beginning and 100.7 MB in the end (delta: -10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.88 ms. Allocated memory is still 123.7 MB. Free memory was 100.7 MB in the beginning and 99.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.51 ms. Allocated memory is still 123.7 MB. Free memory was 99.2 MB in the beginning and 98.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 305.54 ms. Allocated memory is still 123.7 MB. Free memory was 98.1 MB in the beginning and 86.6 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 480.18 ms. Allocated memory is still 123.7 MB. Free memory was 86.1 MB in the beginning and 63.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 3.87 ms. Allocated memory is still 123.7 MB. Free memory was 63.0 MB in the beginning and 62.5 MB in the end (delta: 544.6 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: 42]: 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 14, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseAnd at line 25. Possible FailurePath: [L37] float x = 0.0f / 0.0f; [L17] __uint32_t ix; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (ix) = gf_u.word [L24] ieee_float_shape_type sf_u; [L25] sf_u.word = (ix & 0x7fffffff) [L26] EXPR sf_u.value [L26] (x) = sf_u.value [L28] return x; [L38] float res = fabs_float(x); [L14] return x != x; [L41] COND TRUE !isnan_float(res) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 363.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 12.7ms, AutomataDifference: 34.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 10 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=11occurred 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: 14.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.9ms SsaConstructionTime, 59.1ms SatisfiabilityAnalysisTime, 44.0ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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 [2021-10-24 10:59:06,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:59:09,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:59:09,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:59:09,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:59:09,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:59:09,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:59:09,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:59:09,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:59:09,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:59:09,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:59:09,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:59:09,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:59:09,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:59:09,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:59:09,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:59:09,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:59:09,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:59:09,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:59:09,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:59:09,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:59:09,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:59:09,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:59:09,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:59:09,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:59:09,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:59:09,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:59:09,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:59:09,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:59:09,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:59:09,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:59:09,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:59:09,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:59:09,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:59:09,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:59:09,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:59:09,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:59:09,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:59:09,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:59:09,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:59:09,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:59:09,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:59:09,283 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 10:59:09,332 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:59:09,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:59:09,334 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:59:09,334 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:59:09,335 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:59:09,335 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:59:09,335 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:59:09,335 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:59:09,336 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:59:09,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:59:09,338 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:59:09,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:59:09,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:59:09,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:59:09,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:59:09,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:59:09,339 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:59:09,340 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:59:09,340 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:59:09,340 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:59:09,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:59:09,341 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:59:09,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:59:09,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:59:09,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:59:09,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:59:09,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:59:09,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:59:09,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:59:09,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:59:09,343 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:59:09,343 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:59:09,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:59:09,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:59:09,344 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:59:09,344 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_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b589368e94c5bf428f982c3f177e2b11fa3048a410e00e940a504ad7d373847b [2021-10-24 10:59:09,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:59:09,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:59:09,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:59:09,689 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:59:09,690 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:59:09,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2021-10-24 10:59:09,748 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/data/97cf200d8/a22b984818df4c0481f07dd6ba713128/FLAGcfe75962f [2021-10-24 10:59:10,309 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:59:10,309 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2021-10-24 10:59:10,316 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/data/97cf200d8/a22b984818df4c0481f07dd6ba713128/FLAGcfe75962f [2021-10-24 10:59:10,687 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/data/97cf200d8/a22b984818df4c0481f07dd6ba713128 [2021-10-24 10:59:10,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:59:10,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:59:10,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:59:10,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:59:10,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:59:10,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:59:10" (1/1) ... [2021-10-24 10:59:10,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@110a7dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:10, skipping insertion in model container [2021-10-24 10:59:10,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:59:10" (1/1) ... [2021-10-24 10:59:10,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:59:10,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:59:10,871 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_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/sv-benchmarks/c/float-newlib/float_req_bl_1010.c[999,1012] [2021-10-24 10:59:10,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:59:10,886 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:59:10,904 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_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/sv-benchmarks/c/float-newlib/float_req_bl_1010.c[999,1012] [2021-10-24 10:59:10,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:59:10,921 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:59:10,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:10 WrapperNode [2021-10-24 10:59:10,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:59:10,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:59:10,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:59:10,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:59:10,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:10" (1/1) ... [2021-10-24 10:59:10,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:10" (1/1) ... [2021-10-24 10:59:10,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:59:10,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:59:10,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:59:10,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:59:10,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:10" (1/1) ... [2021-10-24 10:59:10,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:10" (1/1) ... [2021-10-24 10:59:10,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:10" (1/1) ... [2021-10-24 10:59:10,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:10" (1/1) ... [2021-10-24 10:59:11,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:10" (1/1) ... [2021-10-24 10:59:11,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:10" (1/1) ... [2021-10-24 10:59:11,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:10" (1/1) ... [2021-10-24 10:59:11,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:59:11,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:59:11,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:59:11,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:59:11,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:10" (1/1) ... [2021-10-24 10:59:11,031 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:59:11,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:59:11,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:59:11,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:59:11,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 10:59:11,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:59:11,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-24 10:59:11,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-24 10:59:11,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:59:11,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:59:11,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-24 10:59:11,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-24 10:59:11,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:59:11,408 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:59:11,409 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-24 10:59:11,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:59:11 BoogieIcfgContainer [2021-10-24 10:59:11,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:59:11,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:59:11,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:59:11,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:59:11,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:59:10" (1/3) ... [2021-10-24 10:59:11,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ad99b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:59:11, skipping insertion in model container [2021-10-24 10:59:11,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:59:10" (2/3) ... [2021-10-24 10:59:11,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ad99b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:59:11, skipping insertion in model container [2021-10-24 10:59:11,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:59:11" (3/3) ... [2021-10-24 10:59:11,429 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c [2021-10-24 10:59:11,434 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:59:11,434 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:59:11,521 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:59:11,527 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:59:11,528 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:59:11,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) [2021-10-24 10:59:11,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 10:59:11,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:59:11,573 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:59:11,573 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:59:11,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:59:11,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1641238961, now seen corresponding path program 1 times [2021-10-24 10:59:11,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:59:11,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955991956] [2021-10-24 10:59:11,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:59:11,602 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:59:11,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:59:11,616 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:59:11,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:59:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:59:11,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 10:59:11,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:59:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:59:11,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:59:11,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:59:11,812 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:59:11,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955991956] [2021-10-24 10:59:11,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955991956] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:59:11,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:59:11,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:59:11,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243934506] [2021-10-24 10:59:11,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:59:11,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:59:11,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:59:11,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:59:11,850 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-10-24 10:59:11,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:59:11,863 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2021-10-24 10:59:11,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:59:11,865 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-10-24 10:59:11,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:59:11,872 INFO L225 Difference]: With dead ends: 28 [2021-10-24 10:59:11,872 INFO L226 Difference]: Without dead ends: 12 [2021-10-24 10:59:11,875 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:59:11,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-24 10:59:11,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-24 10:59:11,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:11,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-10-24 10:59:11,902 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 9 [2021-10-24 10:59:11,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:59:11,902 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-10-24 10:59:11,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-10-24 10:59:11,903 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-10-24 10:59:11,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 10:59:11,904 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:59:11,904 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:59:11,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:59:12,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:59:12,126 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:59:12,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:59:12,131 INFO L82 PathProgramCache]: Analyzing trace with hash 558246130, now seen corresponding path program 1 times [2021-10-24 10:59:12,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:59:12,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618864431] [2021-10-24 10:59:12,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:59:12,135 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:59:12,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:59:12,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:59:12,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:59:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:59:12,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-24 10:59:12,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:59:12,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-10-24 10:59:12,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2021-10-24 10:59:12,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:59:12,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:59:12,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:59:12,767 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:59:12,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618864431] [2021-10-24 10:59:12,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618864431] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:59:12,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:59:12,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-24 10:59:12,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392840936] [2021-10-24 10:59:12,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-24 10:59:12,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:59:12,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-24 10:59:12,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-24 10:59:12,771 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 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) [2021-10-24 10:59:13,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:59:13,194 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-10-24 10:59:13,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 10:59:13,194 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 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 [2021-10-24 10:59:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:59:13,195 INFO L225 Difference]: With dead ends: 12 [2021-10-24 10:59:13,195 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:59:13,196 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 550.1ms TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-10-24 10:59:13,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:59:13,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:59:13,197 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) [2021-10-24 10:59:13,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:59:13,197 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-24 10:59:13,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:59:13,197 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:59:13,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 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) [2021-10-24 10:59:13,198 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:59:13,198 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:59:13,200 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:59:13,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:59:13,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:59:13,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 10:59:13,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:59:13,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:59:13,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:59:13,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:59:13,482 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 10:59:13,482 INFO L857 garLoopResultBuilder]: For program point L23(lines 23 27) no Hoare annotation was computed. [2021-10-24 10:59:13,483 INFO L857 garLoopResultBuilder]: For program point L23-1(lines 16 29) no Hoare annotation was computed. [2021-10-24 10:59:13,483 INFO L857 garLoopResultBuilder]: For program point L23-2(lines 23 27) no Hoare annotation was computed. [2021-10-24 10:59:13,483 INFO L860 garLoopResultBuilder]: At program point L46(lines 31 47) the Hoare annotation is: true [2021-10-24 10:59:13,483 INFO L857 garLoopResultBuilder]: For program point L42(line 42) no Hoare annotation was computed. [2021-10-24 10:59:13,483 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-24 10:59:13,484 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 10:59:13,484 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-24 10:59:13,484 INFO L853 garLoopResultBuilder]: At program point L28(lines 16 29) the Hoare annotation is: (and (not (let ((.cse0 (let ((.cse1 (bvand (_ bv2147483647 32) ULTIMATE.start_fabs_float_~ix~0))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))))) (fp.eq .cse0 .cse0))) (not (fp.eq |ULTIMATE.start_fabs_float_#res| |ULTIMATE.start_fabs_float_#res|)) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fabs_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2021-10-24 10:59:13,484 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2021-10-24 10:59:13,485 INFO L857 garLoopResultBuilder]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2021-10-24 10:59:13,485 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 18 22) the Hoare annotation is: (not (fp.eq ULTIMATE.start_fabs_float_~x ULTIMATE.start_fabs_float_~x)) [2021-10-24 10:59:13,485 INFO L853 garLoopResultBuilder]: At program point L14(line 14) the Hoare annotation is: (and (not (let ((.cse0 (let ((.cse1 (bvand (_ bv2147483647 32) ULTIMATE.start_fabs_float_~ix~0))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))))) (fp.eq .cse0 .cse0))) (not (fp.eq |ULTIMATE.start_fabs_float_#res| |ULTIMATE.start_fabs_float_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fabs_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2021-10-24 10:59:13,485 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 44) no Hoare annotation was computed. [2021-10-24 10:59:13,490 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:59:13,500 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-24 10:59:13,502 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-24 10:59:13,503 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-24 10:59:13,504 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-24 10:59:13,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:59:13 BoogieIcfgContainer [2021-10-24 10:59:13,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:59:13,506 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:59:13,506 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:59:13,506 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:59:13,506 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:59:11" (3/4) ... [2021-10-24 10:59:13,509 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:59:13,519 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-24 10:59:13,519 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-24 10:59:13,519 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 10:59:13,519 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:59:13,548 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:59:13,549 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:59:13,550 INFO L168 Benchmark]: Toolchain (without parser) took 2858.58 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 29.1 MB in the beginning and 34.5 MB in the end (delta: -5.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:13,551 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 52.4 MB. Free memory was 33.3 MB in the beginning and 33.2 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:59:13,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.53 ms. Allocated memory is still 52.4 MB. Free memory was 28.9 MB in the beginning and 30.0 MB in the end (delta: -1.2 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:13,552 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.35 ms. Allocated memory is still 52.4 MB. Free memory was 30.0 MB in the beginning and 28.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:59:13,553 INFO L168 Benchmark]: Boogie Preprocessor took 64.03 ms. Allocated memory is still 52.4 MB. Free memory was 28.5 MB in the beginning and 27.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:13,553 INFO L168 Benchmark]: RCFGBuilder took 388.51 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 27.1 MB in the beginning and 44.3 MB in the end (delta: -17.2 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:13,554 INFO L168 Benchmark]: TraceAbstraction took 2092.73 ms. Allocated memory is still 67.1 MB. Free memory was 43.7 MB in the beginning and 37.1 MB in the end (delta: 6.6 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:13,555 INFO L168 Benchmark]: Witness Printer took 43.12 ms. Allocated memory is still 67.1 MB. Free memory was 37.0 MB in the beginning and 34.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:13,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 52.4 MB. Free memory was 33.3 MB in the beginning and 33.2 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 229.53 ms. Allocated memory is still 52.4 MB. Free memory was 28.9 MB in the beginning and 30.0 MB in the end (delta: -1.2 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.35 ms. Allocated memory is still 52.4 MB. Free memory was 30.0 MB in the beginning and 28.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.03 ms. Allocated memory is still 52.4 MB. Free memory was 28.5 MB in the beginning and 27.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 388.51 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 27.1 MB in the beginning and 44.3 MB in the end (delta: -17.2 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2092.73 ms. Allocated memory is still 67.1 MB. Free memory was 43.7 MB in the beginning and 37.1 MB in the end (delta: 6.6 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Witness Printer took 43.12 ms. Allocated memory is still 67.1 MB. Free memory was 37.0 MB in the beginning and 34.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * 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: 42]: 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, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1970.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.6ms, AutomataDifference: 466.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 80.3ms, InitialAbstractionConstructionTime: 35.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 12 SDslu, 17 SDs, 0 SdLazy, 24 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 70.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 550.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 88 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 37.7ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 37.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 26.9ms SsaConstructionTime, 68.7ms SatisfiabilityAnalysisTime, 622.7ms InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 36 ConstructedInterpolants, 6 QuantifiedInterpolants, 200 SizeOfPredicates, 13 NumberOfNonLiveVariables, 85 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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: 18]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 16]: Loop Invariant [2021-10-24 10:59:13,568 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-24 10:59:13,569 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (!~fp.eq~FLOAT(~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0]), ~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0])) && !~fp.eq~FLOAT(\result, \result)) && (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant [2021-10-24 10:59:13,570 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-24 10:59:13,570 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((!~fp.eq~FLOAT(~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0]), ~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0])) && !~fp.eq~FLOAT(\result, \result)) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) RESULT: Ultimate proved your program to be correct! [2021-10-24 10:59:13,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1275b66-8f27-4c9a-b3da-1cc36b7d4784/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...