./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/float_double.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs --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 9e3cc8be4574ed58f48fa7ae6ba17a4162234910 .............................................................................................................................................................................................................................................. 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_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs --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 9e3cc8be4574ed58f48fa7ae6ba17a4162234910 ............................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:26:21,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:26:21,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:26:21,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:26:21,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:26:21,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:26:21,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:26:21,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:26:21,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:26:21,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:26:21,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:26:21,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:26:21,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:26:21,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:26:21,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:26:21,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:26:21,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:26:21,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:26:21,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:26:21,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:26:21,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:26:21,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:26:21,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:26:21,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:26:21,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:26:21,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:26:21,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:26:21,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:26:21,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:26:21,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:26:21,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:26:21,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:26:21,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:26:21,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:26:21,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:26:21,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:26:21,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:26:21,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:26:21,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:26:21,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:26:21,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:26:21,413 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:26:21,463 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:26:21,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:26:21,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:26:21,465 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:26:21,465 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:26:21,466 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:26:21,466 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:26:21,466 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:26:21,466 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:26:21,467 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:26:21,468 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:26:21,468 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:26:21,468 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:26:21,469 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:26:21,469 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:26:21,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:26:21,470 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:26:21,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:26:21,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:26:21,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:26:21,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:26:21,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:26:21,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:26:21,472 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:26:21,472 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:26:21,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:26:21,473 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:26:21,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:26:21,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:26:21,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:26:21,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:26:21,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:26:21,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:26:21,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:26:21,476 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:26:21,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:26:21,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:26:21,477 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:26:21,477 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:26:21,478 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_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e3cc8be4574ed58f48fa7ae6ba17a4162234910 [2021-10-16 02:26:21,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:26:21,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:26:21,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:26:21,776 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:26:21,777 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:26:21,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-benchs/float_double.c [2021-10-16 02:26:21,837 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/data/f87edbcc7/f997687d5653405189ee9de58855baea/FLAG3f241b3ef [2021-10-16 02:26:22,305 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:26:22,305 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/sv-benchmarks/c/float-benchs/float_double.c [2021-10-16 02:26:22,320 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/data/f87edbcc7/f997687d5653405189ee9de58855baea/FLAG3f241b3ef [2021-10-16 02:26:22,680 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/data/f87edbcc7/f997687d5653405189ee9de58855baea [2021-10-16 02:26:22,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:26:22,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:26:22,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:26:22,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:26:22,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:26:22,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:26:22" (1/1) ... [2021-10-16 02:26:22,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f303b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:22, skipping insertion in model container [2021-10-16 02:26:22,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:26:22" (1/1) ... [2021-10-16 02:26:22,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:26:22,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:26:22,886 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_2c4e26f4-172d-4747-b97d-8f6b090a02de/sv-benchmarks/c/float-benchs/float_double.c[357,370] [2021-10-16 02:26:22,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:26:22,909 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:26:22,924 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_2c4e26f4-172d-4747-b97d-8f6b090a02de/sv-benchmarks/c/float-benchs/float_double.c[357,370] [2021-10-16 02:26:22,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:26:22,943 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:26:22,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:22 WrapperNode [2021-10-16 02:26:22,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:26:22,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:26:22,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:26:22,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:26:22,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:22" (1/1) ... [2021-10-16 02:26:22,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:22" (1/1) ... [2021-10-16 02:26:22,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:26:22,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:26:22,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:26:22,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:26:22,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:22" (1/1) ... [2021-10-16 02:26:22,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:22" (1/1) ... [2021-10-16 02:26:22,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:22" (1/1) ... [2021-10-16 02:26:22,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:22" (1/1) ... [2021-10-16 02:26:23,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:22" (1/1) ... [2021-10-16 02:26:23,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:22" (1/1) ... [2021-10-16 02:26:23,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:22" (1/1) ... [2021-10-16 02:26:23,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:26:23,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:26:23,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:26:23,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:26:23,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:22" (1/1) ... [2021-10-16 02:26:23,020 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:26:23,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:26:23,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:26:23,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:26:23,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:26:23,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:26:23,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:26:23,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:26:23,343 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:26:23,343 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-16 02:26:23,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:26:23 BoogieIcfgContainer [2021-10-16 02:26:23,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:26:23,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:26:23,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:26:23,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:26:23,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:26:22" (1/3) ... [2021-10-16 02:26:23,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@271d5762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:26:23, skipping insertion in model container [2021-10-16 02:26:23,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:22" (2/3) ... [2021-10-16 02:26:23,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@271d5762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:26:23, skipping insertion in model container [2021-10-16 02:26:23,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:26:23" (3/3) ... [2021-10-16 02:26:23,369 INFO L111 eAbstractionObserver]: Analyzing ICFG float_double.c [2021-10-16 02:26:23,375 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:26:23,389 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:26:23,483 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:26:23,503 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 [2021-10-16 02:26:23,503 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:26:23,518 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) [2021-10-16 02:26:23,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 02:26:23,524 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:23,525 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 02:26:23,526 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:26:23,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:23,533 INFO L82 PathProgramCache]: Analyzing trace with hash 47251, now seen corresponding path program 1 times [2021-10-16 02:26:23,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:26:23,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256850328] [2021-10-16 02:26:23,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:23,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:26:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:26:23,667 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:26:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:26:23,707 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:26:23,710 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:26:23,711 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:26:23,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:26:23,720 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:26:23,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:26:23 BoogieIcfgContainer [2021-10-16 02:26:23,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:26:23,738 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:26:23,738 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:26:23,738 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:26:23,739 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:26:23" (3/4) ... [2021-10-16 02:26:23,742 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:26:23,742 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:26:23,745 INFO L168 Benchmark]: Toolchain (without parser) took 1058.80 ms. Allocated memory was 113.2 MB in the beginning and 146.8 MB in the end (delta: 33.6 MB). Free memory was 82.5 MB in the beginning and 95.0 MB in the end (delta: -12.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:23,746 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 113.2 MB. Free memory is still 66.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:26:23,747 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.84 ms. Allocated memory was 113.2 MB in the beginning and 146.8 MB in the end (delta: 33.6 MB). Free memory was 82.1 MB in the beginning and 120.9 MB in the end (delta: -38.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:23,748 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.38 ms. Allocated memory is still 146.8 MB. Free memory was 120.3 MB in the beginning and 118.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:23,749 INFO L168 Benchmark]: Boogie Preprocessor took 22.93 ms. Allocated memory is still 146.8 MB. Free memory was 118.9 MB in the beginning and 118.3 MB in the end (delta: 614.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:26:23,750 INFO L168 Benchmark]: RCFGBuilder took 337.10 ms. Allocated memory is still 146.8 MB. Free memory was 118.3 MB in the beginning and 108.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:23,751 INFO L168 Benchmark]: TraceAbstraction took 388.93 ms. Allocated memory is still 146.8 MB. Free memory was 107.5 MB in the beginning and 95.2 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:23,751 INFO L168 Benchmark]: Witness Printer took 4.90 ms. Allocated memory is still 146.8 MB. Free memory was 95.2 MB in the beginning and 95.0 MB in the end (delta: 275.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:26:23,756 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 113.2 MB. Free memory is still 66.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 257.84 ms. Allocated memory was 113.2 MB in the beginning and 146.8 MB in the end (delta: 33.6 MB). Free memory was 82.1 MB in the beginning and 120.9 MB in the end (delta: -38.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.38 ms. Allocated memory is still 146.8 MB. Free memory was 120.3 MB in the beginning and 118.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.93 ms. Allocated memory is still 146.8 MB. Free memory was 118.9 MB in the beginning and 118.3 MB in the end (delta: 614.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 337.10 ms. Allocated memory is still 146.8 MB. Free memory was 118.3 MB in the beginning and 108.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 388.93 ms. Allocated memory is still 146.8 MB. Free memory was 107.5 MB in the beginning and 95.2 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.90 ms. Allocated memory is still 146.8 MB. Free memory was 95.2 MB in the beginning and 95.0 MB in the end (delta: 275.9 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: 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 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L10] double x = 1e20 + 1.; [L11] float y = x; [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: 256.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 10.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.7ms, 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: 6.4ms SsaConstructionTime, 43.1ms 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 [2021-10-16 02:26:23,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/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-5709675 [2021-10-16 02:26:26,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:26:26,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:26:26,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:26:26,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:26:26,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:26:26,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:26:26,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:26:26,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:26:26,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:26:26,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:26:26,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:26:26,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:26:26,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:26:26,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:26:26,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:26:26,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:26:26,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:26:26,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:26:26,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:26:26,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:26:26,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:26:26,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:26:26,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:26:26,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:26:26,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:26:26,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:26:26,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:26:26,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:26:26,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:26:26,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:26:26,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:26:26,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:26:26,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:26:26,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:26:26,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:26:26,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:26:26,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:26:26,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:26:26,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:26:26,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:26:26,546 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:26:26,597 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:26:26,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:26:26,599 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:26:26,600 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:26:26,600 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:26:26,600 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:26:26,601 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:26:26,601 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:26:26,602 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:26:26,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:26:26,605 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:26:26,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:26:26,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:26:26,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:26:26,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:26:26,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:26:26,606 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:26:26,606 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:26:26,607 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:26:26,607 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:26:26,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:26:26,607 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:26:26,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:26:26,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:26:26,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:26:26,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:26:26,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:26:26,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:26:26,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:26:26,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:26:26,609 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:26:26,610 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:26:26,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:26:26,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:26:26,611 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:26:26,611 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_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e3cc8be4574ed58f48fa7ae6ba17a4162234910 [2021-10-16 02:26:26,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:26:27,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:26:27,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:26:27,032 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:26:27,033 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:26:27,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-benchs/float_double.c [2021-10-16 02:26:27,128 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/data/e9871babc/4ad9c7a19c1c46438efeb3d14fb3badf/FLAG2546090f2 [2021-10-16 02:26:27,788 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:26:27,789 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/sv-benchmarks/c/float-benchs/float_double.c [2021-10-16 02:26:27,799 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/data/e9871babc/4ad9c7a19c1c46438efeb3d14fb3badf/FLAG2546090f2 [2021-10-16 02:26:28,114 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/data/e9871babc/4ad9c7a19c1c46438efeb3d14fb3badf [2021-10-16 02:26:28,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:26:28,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:26:28,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:26:28,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:26:28,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:26:28,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:26:28" (1/1) ... [2021-10-16 02:26:28,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c2e703d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:28, skipping insertion in model container [2021-10-16 02:26:28,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:26:28" (1/1) ... [2021-10-16 02:26:28,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:26:28,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:26:28,273 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_2c4e26f4-172d-4747-b97d-8f6b090a02de/sv-benchmarks/c/float-benchs/float_double.c[357,370] [2021-10-16 02:26:28,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:26:28,298 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:26:28,311 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_2c4e26f4-172d-4747-b97d-8f6b090a02de/sv-benchmarks/c/float-benchs/float_double.c[357,370] [2021-10-16 02:26:28,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:26:28,329 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:26:28,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:28 WrapperNode [2021-10-16 02:26:28,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:26:28,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:26:28,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:26:28,332 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:26:28,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:28" (1/1) ... [2021-10-16 02:26:28,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:28" (1/1) ... [2021-10-16 02:26:28,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:26:28,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:26:28,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:26:28,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:26:28,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:28" (1/1) ... [2021-10-16 02:26:28,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:28" (1/1) ... [2021-10-16 02:26:28,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:28" (1/1) ... [2021-10-16 02:26:28,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:28" (1/1) ... [2021-10-16 02:26:28,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:28" (1/1) ... [2021-10-16 02:26:28,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:28" (1/1) ... [2021-10-16 02:26:28,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:28" (1/1) ... [2021-10-16 02:26:28,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:26:28,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:26:28,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:26:28,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:26:28,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:28" (1/1) ... [2021-10-16 02:26:28,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:26:28,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:26:28,479 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:26:28,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:26:28,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:26:28,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:26:28,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:26:28,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:26:29,023 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:26:29,024 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-16 02:26:29,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:26:29 BoogieIcfgContainer [2021-10-16 02:26:29,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:26:29,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:26:29,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:26:29,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:26:29,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:26:28" (1/3) ... [2021-10-16 02:26:29,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c36e6f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:26:29, skipping insertion in model container [2021-10-16 02:26:29,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:28" (2/3) ... [2021-10-16 02:26:29,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c36e6f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:26:29, skipping insertion in model container [2021-10-16 02:26:29,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:26:29" (3/3) ... [2021-10-16 02:26:29,051 INFO L111 eAbstractionObserver]: Analyzing ICFG float_double.c [2021-10-16 02:26:29,057 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:26:29,057 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:26:29,150 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:26:29,157 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 [2021-10-16 02:26:29,158 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:26:29,210 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) [2021-10-16 02:26:29,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:26:29,215 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:29,216 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:26:29,216 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:26:29,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:29,237 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-10-16 02:26:29,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:26:29,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714275739] [2021-10-16 02:26:29,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:29,257 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:26:29,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:26:29,264 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:26:29,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:26:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:29,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:26:29,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:26:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:26:29,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:26:29,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:26:29,728 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:26:29,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714275739] [2021-10-16 02:26:29,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714275739] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:29,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:29,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:26:29,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111819746] [2021-10-16 02:26:29,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:26:29,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:26:29,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:26:29,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:26:29,753 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-10-16 02:26:29,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:29,784 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-10-16 02:26:29,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:26:29,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 4 [2021-10-16 02:26:29,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:29,792 INFO L225 Difference]: With dead ends: 13 [2021-10-16 02:26:29,792 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:26:29,795 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:26:29,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:26:29,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:26:29,819 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) [2021-10-16 02:26:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:26:29,820 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-10-16 02:26:29,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:29,821 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:26:29,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-10-16 02:26:29,821 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:26:29,821 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:26:29,824 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:26:29,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:26:30,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:26:30,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:26:30,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:26:30,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:26:30,082 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:26:30,083 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:26:30,083 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:26:30,084 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:26:30,085 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2021-10-16 02:26:30,085 INFO L853 garLoopResultBuilder]: At program point L13(lines 8 14) the Hoare annotation is: (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) [2021-10-16 02:26:30,085 INFO L857 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2021-10-16 02:26:30,086 INFO L857 garLoopResultBuilder]: For program point L6-1(line 6) no Hoare annotation was computed. [2021-10-16 02:26:30,087 INFO L853 garLoopResultBuilder]: At program point L6-3(line 6) the Hoare annotation is: (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) [2021-10-16 02:26:30,092 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:26:30,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:26:30 BoogieIcfgContainer [2021-10-16 02:26:30,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:26:30,115 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:26:30,115 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:26:30,115 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:26:30,116 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:26:29" (3/4) ... [2021-10-16 02:26:30,120 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:26:30,132 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 02:26:30,133 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:26:30,134 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-16 02:26:30,134 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:26:30,186 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:26:30,191 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:26:30,193 INFO L168 Benchmark]: Toolchain (without parser) took 2073.41 ms. Allocated memory is still 75.5 MB. Free memory was 57.3 MB in the beginning and 49.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:30,194 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 75.5 MB. Free memory was 55.6 MB in the beginning and 55.6 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:26:30,196 INFO L168 Benchmark]: CACSL2BoogieTranslator took 210.76 ms. Allocated memory is still 75.5 MB. Free memory was 57.1 MB in the beginning and 47.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:30,196 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.27 ms. Allocated memory is still 75.5 MB. Free memory was 47.4 MB in the beginning and 46.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:26:30,197 INFO L168 Benchmark]: Boogie Preprocessor took 64.32 ms. Allocated memory is still 75.5 MB. Free memory was 46.0 MB in the beginning and 58.2 MB in the end (delta: -12.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:30,198 INFO L168 Benchmark]: RCFGBuilder took 592.47 ms. Allocated memory is still 75.5 MB. Free memory was 58.2 MB in the beginning and 49.4 MB in the end (delta: 8.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:30,198 INFO L168 Benchmark]: TraceAbstraction took 1080.41 ms. Allocated memory is still 75.5 MB. Free memory was 48.9 MB in the beginning and 51.3 MB in the end (delta: -2.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:30,199 INFO L168 Benchmark]: Witness Printer took 76.77 ms. Allocated memory is still 75.5 MB. Free memory was 51.3 MB in the beginning and 49.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:30,206 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 75.5 MB. Free memory was 55.6 MB in the beginning and 55.6 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 210.76 ms. Allocated memory is still 75.5 MB. Free memory was 57.1 MB in the beginning and 47.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.27 ms. Allocated memory is still 75.5 MB. Free memory was 47.4 MB in the beginning and 46.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.32 ms. Allocated memory is still 75.5 MB. Free memory was 46.0 MB in the beginning and 58.2 MB in the end (delta: -12.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 592.47 ms. Allocated memory is still 75.5 MB. Free memory was 58.2 MB in the beginning and 49.4 MB in the end (delta: 8.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1080.41 ms. Allocated memory is still 75.5 MB. Free memory was 48.9 MB in the beginning and 51.3 MB in the end (delta: -2.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. * Witness Printer took 76.77 ms. Allocated memory is still 75.5 MB. Free memory was 51.3 MB in the beginning and 49.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. 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 - 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: 943.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 31.1ms, AutomataDifference: 57.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 42.8ms, InitialAbstractionConstructionTime: 26.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 8 SDslu, 1 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 31.6ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 5.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 11.1ms SsaConstructionTime, 63.0ms SatisfiabilityAnalysisTime, 356.6ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 5 NumberOfNonLiveVariables, 28 ConjunctsInSsa, 4 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 Derived loop invariant: cond == 1bv32 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: cond == 1bv32 RESULT: Ultimate proved your program to be correct! [2021-10-16 02:26:30,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4e26f4-172d-4747-b97d-8f6b090a02de/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...