./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/addsub_double_exact.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/addsub_double_exact.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1164a9832b4afc44dcf9dcf8d1d6de462821ea74 ................................................................................................................................................................................................................................................. 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_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/addsub_double_exact.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1164a9832b4afc44dcf9dcf8d1d6de462821ea74 ............................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:09:17,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:09:17,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:09:17,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:09:17,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:09:17,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:09:17,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:09:17,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:09:17,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:09:17,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:09:17,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:09:17,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:09:17,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:09:17,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:09:17,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:09:17,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:09:17,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:09:17,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:09:17,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:09:17,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:09:17,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:09:17,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:09:17,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:09:17,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:09:17,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:09:17,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:09:17,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:09:17,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:09:17,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:09:17,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:09:17,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:09:17,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:09:17,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:09:17,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:09:17,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:09:17,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:09:17,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:09:17,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:09:17,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:09:17,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:09:17,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:09:17,457 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:09:17,483 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:09:17,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:09:17,485 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:09:17,485 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:09:17,485 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:09:17,486 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:09:17,486 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:09:17,486 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:09:17,486 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:09:17,487 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:09:17,487 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:09:17,487 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:09:17,487 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:09:17,488 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:09:17,488 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:09:17,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:09:17,489 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:09:17,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:09:17,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:09:17,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:09:17,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:09:17,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:09:17,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:09:17,491 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:09:17,491 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:09:17,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:09:17,491 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:09:17,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:09:17,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:09:17,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:09:17,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:09:17,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:09:17,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:09:17,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:09:17,493 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:09:17,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:09:17,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:09:17,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:09:17,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:09:17,495 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_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1164a9832b4afc44dcf9dcf8d1d6de462821ea74 [2021-10-13 07:09:17,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:09:17,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:09:17,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:09:17,858 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:09:17,859 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:09:17,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-benchs/addsub_double_exact.c [2021-10-13 07:09:17,934 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/data/6c647a85b/6f2e77f2c69e4d8ea0e6dabec101ee58/FLAGe2c319c06 [2021-10-13 07:09:18,452 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:09:18,453 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/sv-benchmarks/c/float-benchs/addsub_double_exact.c [2021-10-13 07:09:18,463 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/data/6c647a85b/6f2e77f2c69e4d8ea0e6dabec101ee58/FLAGe2c319c06 [2021-10-13 07:09:18,812 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/data/6c647a85b/6f2e77f2c69e4d8ea0e6dabec101ee58 [2021-10-13 07:09:18,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:09:18,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:09:18,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:09:18,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:09:18,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:09:18,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:09:18" (1/1) ... [2021-10-13 07:09:18,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76bc203f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:18, skipping insertion in model container [2021-10-13 07:09:18,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:09:18" (1/1) ... [2021-10-13 07:09:18,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:09:18,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:09:19,035 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_2a2a6d69-fd49-4e13-b06c-8be617af5418/sv-benchmarks/c/float-benchs/addsub_double_exact.c[393,406] [2021-10-13 07:09:19,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:09:19,053 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:09:19,066 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_2a2a6d69-fd49-4e13-b06c-8be617af5418/sv-benchmarks/c/float-benchs/addsub_double_exact.c[393,406] [2021-10-13 07:09:19,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:09:19,082 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:09:19,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:19 WrapperNode [2021-10-13 07:09:19,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:09:19,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:09:19,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:09:19,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:09:19,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:19" (1/1) ... [2021-10-13 07:09:19,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:19" (1/1) ... [2021-10-13 07:09:19,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:09:19,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:09:19,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:09:19,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:09:19,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:19" (1/1) ... [2021-10-13 07:09:19,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:19" (1/1) ... [2021-10-13 07:09:19,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:19" (1/1) ... [2021-10-13 07:09:19,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:19" (1/1) ... [2021-10-13 07:09:19,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:19" (1/1) ... [2021-10-13 07:09:19,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:19" (1/1) ... [2021-10-13 07:09:19,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:19" (1/1) ... [2021-10-13 07:09:19,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:09:19,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:09:19,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:09:19,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:09:19,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:19" (1/1) ... [2021-10-13 07:09:19,179 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:09:19,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:09:19,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:09:19,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:09:19,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:09:19,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:09:19,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:09:19,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:09:19,451 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:09:19,451 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 07:09:19,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:09:19 BoogieIcfgContainer [2021-10-13 07:09:19,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:09:19,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:09:19,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:09:19,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:09:19,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:09:18" (1/3) ... [2021-10-13 07:09:19,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37798c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:09:19, skipping insertion in model container [2021-10-13 07:09:19,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:19" (2/3) ... [2021-10-13 07:09:19,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37798c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:09:19, skipping insertion in model container [2021-10-13 07:09:19,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:09:19" (3/3) ... [2021-10-13 07:09:19,484 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_double_exact.c [2021-10-13 07:09:19,490 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:09:19,491 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:09:19,582 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:09:19,598 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:09:19,599 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:09:19,631 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2021-10-13 07:09:19,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:09:19,636 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:09:19,637 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:09:19,638 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:09:19,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:09:19,655 INFO L82 PathProgramCache]: Analyzing trace with hash 47251, now seen corresponding path program 1 times [2021-10-13 07:09:19,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:09:19,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340390668] [2021-10-13 07:09:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:09:19,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:09:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:09:19,823 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:09:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:09:19,882 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:09:19,885 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:09:19,886 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:09:19,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:09:19,894 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:09:19,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:09:19 BoogieIcfgContainer [2021-10-13 07:09:19,907 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:09:19,908 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:09:19,908 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:09:19,908 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:09:19,909 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:09:19" (3/4) ... [2021-10-13 07:09:19,912 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:09:19,912 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:09:19,915 INFO L168 Benchmark]: Toolchain (without parser) took 1097.07 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 49.6 MB in the beginning and 58.3 MB in the end (delta: -8.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:09:19,915 INFO L168 Benchmark]: CDTParser took 1.05 ms. Allocated memory is still 86.0 MB. Free memory is still 65.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:09:19,917 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.37 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 49.3 MB in the beginning and 84.4 MB in the end (delta: -35.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:09:19,917 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.85 ms. Allocated memory is still 107.0 MB. Free memory was 84.4 MB in the beginning and 82.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:09:19,918 INFO L168 Benchmark]: Boogie Preprocessor took 40.08 ms. Allocated memory is still 107.0 MB. Free memory was 82.7 MB in the beginning and 81.8 MB in the end (delta: 927.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:09:19,919 INFO L168 Benchmark]: RCFGBuilder took 288.53 ms. Allocated memory is still 107.0 MB. Free memory was 81.8 MB in the beginning and 72.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:09:19,920 INFO L168 Benchmark]: TraceAbstraction took 451.37 ms. Allocated memory is still 107.0 MB. Free memory was 71.8 MB in the beginning and 58.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:09:19,921 INFO L168 Benchmark]: Witness Printer took 4.62 ms. Allocated memory is still 107.0 MB. Free memory is still 58.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:09:19,925 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.05 ms. Allocated memory is still 86.0 MB. Free memory is still 65.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 265.37 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 49.3 MB in the beginning and 84.4 MB in the end (delta: -35.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.85 ms. Allocated memory is still 107.0 MB. Free memory was 84.4 MB in the beginning and 82.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.08 ms. Allocated memory is still 107.0 MB. Free memory was 82.7 MB in the beginning and 81.8 MB in the end (delta: 927.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 288.53 ms. Allocated memory is still 107.0 MB. Free memory was 81.8 MB in the beginning and 72.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 451.37 ms. Allocated memory is still 107.0 MB. Free memory was 71.8 MB in the beginning and 58.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.62 ms. Allocated memory is still 107.0 MB. Free memory is still 58.3 MB. 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: 6]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 13. Possible FailurePath: [L10] double x, y, z, r; [L12] x = 1e8 [L13] y = x + 1 [L14] z = x - 1 [L15] r = y - z [L6] COND TRUE !(cond) [L6] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 312.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 11.5ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 25.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.3ms SsaConstructionTime, 61.2ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 07:09:19,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:09:22,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:09:22,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:09:22,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:09:22,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:09:22,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:09:22,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:09:22,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:09:22,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:09:22,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:09:22,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:09:22,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:09:22,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:09:22,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:09:22,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:09:22,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:09:22,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:09:22,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:09:22,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:09:22,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:09:22,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:09:22,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:09:22,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:09:22,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:09:22,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:09:22,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:09:22,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:09:22,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:09:22,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:09:22,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:09:22,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:09:22,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:09:22,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:09:22,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:09:22,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:09:22,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:09:22,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:09:22,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:09:22,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:09:22,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:09:22,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:09:22,749 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:09:22,786 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:09:22,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:09:22,787 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:09:22,788 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:09:22,788 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:09:22,788 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:09:22,789 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:09:22,789 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:09:22,789 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:09:22,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:09:22,790 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:09:22,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:09:22,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:09:22,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:09:22,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:09:22,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:09:22,792 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:09:22,792 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:09:22,792 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:09:22,792 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:09:22,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:09:22,793 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:09:22,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:09:22,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:09:22,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:09:22,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:09:22,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:09:22,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:09:22,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:09:22,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:09:22,795 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:09:22,796 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:09:22,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:09:22,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:09:22,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:09:22,797 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_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1164a9832b4afc44dcf9dcf8d1d6de462821ea74 [2021-10-13 07:09:23,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:09:23,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:09:23,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:09:23,350 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:09:23,351 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:09:23,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-benchs/addsub_double_exact.c [2021-10-13 07:09:23,452 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/data/b33765374/a4cc58a53108403496dd3c207112b8aa/FLAGf03b4c814 [2021-10-13 07:09:23,998 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:09:23,998 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/sv-benchmarks/c/float-benchs/addsub_double_exact.c [2021-10-13 07:09:24,007 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/data/b33765374/a4cc58a53108403496dd3c207112b8aa/FLAGf03b4c814 [2021-10-13 07:09:24,369 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/data/b33765374/a4cc58a53108403496dd3c207112b8aa [2021-10-13 07:09:24,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:09:24,380 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:09:24,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:09:24,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:09:24,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:09:24,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:09:24" (1/1) ... [2021-10-13 07:09:24,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ddc0542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:24, skipping insertion in model container [2021-10-13 07:09:24,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:09:24" (1/1) ... [2021-10-13 07:09:24,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:09:24,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:09:24,547 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_2a2a6d69-fd49-4e13-b06c-8be617af5418/sv-benchmarks/c/float-benchs/addsub_double_exact.c[393,406] [2021-10-13 07:09:24,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:09:24,581 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:09:24,596 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_2a2a6d69-fd49-4e13-b06c-8be617af5418/sv-benchmarks/c/float-benchs/addsub_double_exact.c[393,406] [2021-10-13 07:09:24,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:09:24,645 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:09:24,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:24 WrapperNode [2021-10-13 07:09:24,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:09:24,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:09:24,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:09:24,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:09:24,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:24" (1/1) ... [2021-10-13 07:09:24,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:24" (1/1) ... [2021-10-13 07:09:24,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:09:24,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:09:24,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:09:24,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:09:24,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:24" (1/1) ... [2021-10-13 07:09:24,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:24" (1/1) ... [2021-10-13 07:09:24,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:24" (1/1) ... [2021-10-13 07:09:24,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:24" (1/1) ... [2021-10-13 07:09:24,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:24" (1/1) ... [2021-10-13 07:09:24,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:24" (1/1) ... [2021-10-13 07:09:24,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:24" (1/1) ... [2021-10-13 07:09:24,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:09:24,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:09:24,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:09:24,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:09:24,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:24" (1/1) ... [2021-10-13 07:09:24,720 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:09:24,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:09:24,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:09:24,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:09:24,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:09:24,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:09:24,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:09:24,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:09:25,761 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:09:25,763 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 07:09:25,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:09:25 BoogieIcfgContainer [2021-10-13 07:09:25,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:09:25,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:09:25,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:09:25,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:09:25,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:09:24" (1/3) ... [2021-10-13 07:09:25,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472dc537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:09:25, skipping insertion in model container [2021-10-13 07:09:25,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:24" (2/3) ... [2021-10-13 07:09:25,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472dc537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:09:25, skipping insertion in model container [2021-10-13 07:09:25,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:09:25" (3/3) ... [2021-10-13 07:09:25,777 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_double_exact.c [2021-10-13 07:09:25,782 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:09:25,782 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:09:25,831 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:09:25,837 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:09:25,837 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:09:25,851 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 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) [2021-10-13 07:09:25,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:09:25,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:09:25,857 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:09:25,857 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:09:25,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:09:25,863 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-10-13 07:09:25,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:09:25,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584321664] [2021-10-13 07:09:25,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:09:25,877 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:09:25,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:09:25,881 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:09:25,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:09:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:09:26,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:09:26,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:09:26,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:09:26,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:09:26,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:09:26,434 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:09:26,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584321664] [2021-10-13 07:09:26,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584321664] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:09:26,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:09:26,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 07:09:26,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972462771] [2021-10-13 07:09:26,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:09:26,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:09:26,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:09:26,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:09:26,460 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 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) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:09:26,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:09:26,737 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-10-13 07:09:26,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:09:26,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 07:09:26,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:09:26,758 INFO L225 Difference]: With dead ends: 13 [2021-10-13 07:09:26,758 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:09:26,761 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.0ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:09:26,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:09:26,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:09:26,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:09:26,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:09:26,784 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-10-13 07:09:26,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:09:26,785 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:09:26,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:09:26,785 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:09:26,786 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:09:26,788 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:09:26,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:09:27,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:09:27,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:09:27,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:09:27,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:09:27,068 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:09:27,068 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:09:27,068 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:09:27,069 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:09:27,069 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2021-10-13 07:09:27,069 INFO L853 garLoopResultBuilder]: At program point L17(lines 8 18) the Hoare annotation is: (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-13 07:09:27,070 INFO L857 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2021-10-13 07:09:27,070 INFO L857 garLoopResultBuilder]: For program point L6-1(line 6) no Hoare annotation was computed. [2021-10-13 07:09:27,070 INFO L853 garLoopResultBuilder]: At program point L6-3(line 6) the Hoare annotation is: (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-13 07:09:27,075 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:09:27,084 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 07:09:27,088 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 07:09:27,089 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 07:09:27,090 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 07:09:27,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:09:27 BoogieIcfgContainer [2021-10-13 07:09:27,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:09:27,092 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:09:27,092 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:09:27,092 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:09:27,093 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:09:25" (3/4) ... [2021-10-13 07:09:27,096 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:09:27,107 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 07:09:27,107 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:09:27,107 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 07:09:27,107 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:09:27,143 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:09:27,143 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:09:27,145 INFO L168 Benchmark]: Toolchain (without parser) took 2763.84 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 45.1 MB in the beginning and 42.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:09:27,146 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 65.0 MB. Free memory is still 46.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:09:27,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.87 ms. Allocated memory is still 65.0 MB. Free memory was 44.8 MB in the beginning and 48.8 MB in the end (delta: -4.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:09:27,147 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.60 ms. Allocated memory is still 65.0 MB. Free memory was 48.6 MB in the beginning and 47.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:09:27,148 INFO L168 Benchmark]: Boogie Preprocessor took 23.48 ms. Allocated memory is still 65.0 MB. Free memory was 47.3 MB in the beginning and 46.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:09:27,148 INFO L168 Benchmark]: RCFGBuilder took 1052.63 ms. Allocated memory is still 65.0 MB. Free memory was 46.1 MB in the beginning and 37.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:09:27,149 INFO L168 Benchmark]: TraceAbstraction took 1321.87 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 36.8 MB in the beginning and 44.5 MB in the end (delta: -7.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:09:27,150 INFO L168 Benchmark]: Witness Printer took 51.69 ms. Allocated memory is still 79.7 MB. Free memory was 44.5 MB in the beginning and 42.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:09:27,153 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 65.0 MB. Free memory is still 46.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 263.87 ms. Allocated memory is still 65.0 MB. Free memory was 44.8 MB in the beginning and 48.8 MB in the end (delta: -4.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.60 ms. Allocated memory is still 65.0 MB. Free memory was 48.6 MB in the beginning and 47.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.48 ms. Allocated memory is still 65.0 MB. Free memory was 47.3 MB in the beginning and 46.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1052.63 ms. Allocated memory is still 65.0 MB. Free memory was 46.1 MB in the beginning and 37.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1321.87 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 36.8 MB in the beginning and 44.5 MB in the end (delta: -7.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Witness Printer took 51.69 ms. Allocated memory is still 79.7 MB. Free memory was 44.5 MB in the beginning and 42.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 6]: 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, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1250.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 9.4ms, AutomataDifference: 316.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 64.2ms, InitialAbstractionConstructionTime: 9.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 9 SDslu, 2 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 229.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 9.7ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 14 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 30.2ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 28.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 10.4ms SsaConstructionTime, 245.9ms SatisfiabilityAnalysisTime, 244.4ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 6 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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: 6]: Loop Invariant [2021-10-13 07:09:27,161 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 07:09:27,162 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: cond == 1bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 8]: Loop Invariant [2021-10-13 07:09:27,162 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 07:09:27,162 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: cond == 1bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2021-10-13 07:09:27,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2a6d69-fd49-4e13-b06c-8be617af5418/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...