./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.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_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/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_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/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_ccd8f502-7fcf-424a-a8ff-26072c2402bc/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 7498db39da300a600c956afc9ee769ef7c520660 .......................................................................................................................................................................................................................................................................................................... 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_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/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_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/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_ccd8f502-7fcf-424a-a8ff-26072c2402bc/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 7498db39da300a600c956afc9ee769ef7c520660 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:38:58,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:38:58,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:38:58,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:38:58,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:38:58,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:38:58,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:38:58,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:38:58,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:38:58,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:38:58,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:38:58,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:38:58,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:38:58,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:38:58,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:38:58,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:38:58,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:38:58,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:38:58,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:38:58,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:38:58,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:38:58,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:38:58,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:38:58,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:38:58,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:38:58,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:38:58,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:38:58,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:38:58,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:38:58,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:38:58,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:38:58,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:38:58,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:38:58,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:38:58,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:38:58,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:38:58,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:38:58,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:38:58,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:38:58,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:38:58,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:38:58,509 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:38:58,543 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:38:58,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:38:58,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:38:58,545 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:38:58,545 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:38:58,545 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:38:58,546 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:38:58,546 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:38:58,546 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:38:58,546 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:38:58,547 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:38:58,547 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:38:58,547 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:38:58,548 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:38:58,548 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:38:58,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:38:58,549 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:38:58,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:38:58,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:38:58,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:38:58,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:38:58,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:38:58,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:38:58,551 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:38:58,551 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:38:58,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:38:58,552 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:38:58,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:38:58,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:38:58,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:38:58,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:38:58,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:38:58,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:38:58,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:38:58,554 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:38:58,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:38:58,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:38:58,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:38:58,555 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:38:58,555 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_ccd8f502-7fcf-424a-a8ff-26072c2402bc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7498db39da300a600c956afc9ee769ef7c520660 [2021-10-16 02:38:58,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:38:58,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:38:58,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:38:58,895 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:38:58,896 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:38:58,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2021-10-16 02:38:58,975 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/data/a97cf4a49/c9c2e791536b469585aad6f9a0c8d2fc/FLAG05de5f114 [2021-10-16 02:38:59,488 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:38:59,488 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2021-10-16 02:38:59,496 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/data/a97cf4a49/c9c2e791536b469585aad6f9a0c8d2fc/FLAG05de5f114 [2021-10-16 02:38:59,858 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/data/a97cf4a49/c9c2e791536b469585aad6f9a0c8d2fc [2021-10-16 02:38:59,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:38:59,862 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:38:59,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:38:59,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:38:59,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:38:59,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:38:59" (1/1) ... [2021-10-16 02:38:59,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a23d70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:59, skipping insertion in model container [2021-10-16 02:38:59,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:38:59" (1/1) ... [2021-10-16 02:38:59,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:38:59,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:39:00,086 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_ccd8f502-7fcf-424a-a8ff-26072c2402bc/sv-benchmarks/c/float-newlib/float_req_bl_1250.c[1719,1732] [2021-10-16 02:39:00,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:39:00,100 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:39:00,126 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_ccd8f502-7fcf-424a-a8ff-26072c2402bc/sv-benchmarks/c/float-newlib/float_req_bl_1250.c[1719,1732] [2021-10-16 02:39:00,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:39:00,143 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:39:00,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:00 WrapperNode [2021-10-16 02:39:00,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:39:00,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:39:00,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:39:00,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:39:00,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:00" (1/1) ... [2021-10-16 02:39:00,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:00" (1/1) ... [2021-10-16 02:39:00,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:39:00,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:39:00,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:39:00,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:39:00,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:00" (1/1) ... [2021-10-16 02:39:00,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:00" (1/1) ... [2021-10-16 02:39:00,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:00" (1/1) ... [2021-10-16 02:39:00,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:00" (1/1) ... [2021-10-16 02:39:00,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:00" (1/1) ... [2021-10-16 02:39:00,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:00" (1/1) ... [2021-10-16 02:39:00,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:00" (1/1) ... [2021-10-16 02:39:00,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:39:00,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:39:00,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:39:00,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:39:00,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:00" (1/1) ... [2021-10-16 02:39:00,234 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:39:00,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:39:00,261 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:39:00,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:39:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:39:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:39:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-16 02:39:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:39:00,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:39:00,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:39:00,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:39:01,056 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:39:01,056 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-16 02:39:01,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:39:01 BoogieIcfgContainer [2021-10-16 02:39:01,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:39:01,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:39:01,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:39:01,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:39:01,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:38:59" (1/3) ... [2021-10-16 02:39:01,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f81e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:39:01, skipping insertion in model container [2021-10-16 02:39:01,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:00" (2/3) ... [2021-10-16 02:39:01,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f81e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:39:01, skipping insertion in model container [2021-10-16 02:39:01,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:39:01" (3/3) ... [2021-10-16 02:39:01,070 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2021-10-16 02:39:01,076 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:39:01,076 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:39:01,127 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:39:01,158 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 02:39:01,158 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:39:01,186 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:39:01,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:39:01,215 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:39:01,216 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:39:01,216 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:39:01,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:39:01,222 INFO L82 PathProgramCache]: Analyzing trace with hash -844709066, now seen corresponding path program 1 times [2021-10-16 02:39:01,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:39:01,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366891033] [2021-10-16 02:39:01,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:39:01,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:39:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:39:01,400 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 02:39:01,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:39:01,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366891033] [2021-10-16 02:39:01,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366891033] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:39:01,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:39:01,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:39:01,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325980363] [2021-10-16 02:39:01,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:39:01,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:39:01,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:39:01,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:39:01,427 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:39:01,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:39:01,443 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2021-10-16 02:39:01,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:39:01,445 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-16 02:39:01,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:39:01,454 INFO L225 Difference]: With dead ends: 27 [2021-10-16 02:39:01,454 INFO L226 Difference]: Without dead ends: 12 [2021-10-16 02:39:01,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:39:01,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-16 02:39:01,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-16 02:39:01,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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 02:39:01,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-16 02:39:01,491 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2021-10-16 02:39:01,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:39:01,492 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-16 02:39:01,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:39:01,493 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-16 02:39:01,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:39:01,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:39:01,493 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:39:01,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:39:01,494 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:39:01,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:39:01,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1253567085, now seen corresponding path program 1 times [2021-10-16 02:39:01,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:39:01,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955921493] [2021-10-16 02:39:01,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:39:01,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:39:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:39:01,569 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:39:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:39:01,656 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:39:01,656 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:39:01,658 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:39:01,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:39:01,668 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:39:01,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:39:01 BoogieIcfgContainer [2021-10-16 02:39:01,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:39:01,693 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:39:01,693 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:39:01,694 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:39:01,694 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:39:01" (3/4) ... [2021-10-16 02:39:01,698 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:39:01,698 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:39:01,701 INFO L168 Benchmark]: Toolchain (without parser) took 1837.23 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 67.7 MB in the beginning and 79.6 MB in the end (delta: -11.9 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:39:01,702 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 100.7 MB. Free memory was 54.0 MB in the beginning and 54.0 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:39:01,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.61 ms. Allocated memory is still 100.7 MB. Free memory was 67.5 MB in the beginning and 75.8 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:39:01,706 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.97 ms. Allocated memory is still 100.7 MB. Free memory was 75.8 MB in the beginning and 74.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:39:01,713 INFO L168 Benchmark]: Boogie Preprocessor took 31.91 ms. Allocated memory is still 100.7 MB. Free memory was 74.2 MB in the beginning and 72.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:39:01,714 INFO L168 Benchmark]: RCFGBuilder took 835.48 ms. Allocated memory is still 100.7 MB. Free memory was 72.9 MB in the beginning and 50.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:39:01,715 INFO L168 Benchmark]: TraceAbstraction took 631.10 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 50.5 MB in the beginning and 80.2 MB in the end (delta: -29.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:39:01,715 INFO L168 Benchmark]: Witness Printer took 5.25 ms. Allocated memory is still 123.7 MB. Free memory was 80.2 MB in the beginning and 79.6 MB in the end (delta: 565.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:39:01,720 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 100.7 MB. Free memory was 54.0 MB in the beginning and 54.0 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 279.61 ms. Allocated memory is still 100.7 MB. Free memory was 67.5 MB in the beginning and 75.8 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.97 ms. Allocated memory is still 100.7 MB. Free memory was 75.8 MB in the beginning and 74.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.91 ms. Allocated memory is still 100.7 MB. Free memory was 74.2 MB in the beginning and 72.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 835.48 ms. Allocated memory is still 100.7 MB. Free memory was 72.9 MB in the beginning and 50.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 631.10 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 50.5 MB in the beginning and 80.2 MB in the end (delta: -29.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.25 ms. Allocated memory is still 123.7 MB. Free memory was 80.2 MB in the beginning and 79.6 MB in the end (delta: 565.5 kB). 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 - UnprovableResult [Line: 67]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 56, overapproximation of someBinaryArithmeticFLOAToperation at line 62. Possible FailurePath: [L62] float x = 0.0f / 0.0f; [L63] float y = 0.0f / 0.0f; [L22] __uint32_t w; [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (w) = gf_u.word [L30] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L32-L33] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L35-L36] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L38] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L41] return 0; [L45] COND TRUE __fpclassify_float(x) == 0 [L46] return y; [L64] float res = fmax_float(x, y); [L56] return x != x; [L66] COND TRUE !isnan_float(res) [L67] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 540.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 41.6ms, AutomataDifference: 46.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.2ms SsaConstructionTime, 97.4ms SatisfiabilityAnalysisTime, 53.5ms InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-16 02:39:01,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/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 02:39:04,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:39:04,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:39:04,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:39:04,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:39:04,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:39:04,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:39:04,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:39:04,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:39:04,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:39:04,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:39:04,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:39:04,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:39:04,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:39:04,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:39:04,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:39:04,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:39:04,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:39:04,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:39:04,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:39:04,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:39:04,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:39:04,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:39:04,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:39:04,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:39:04,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:39:04,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:39:04,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:39:04,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:39:04,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:39:04,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:39:04,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:39:04,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:39:04,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:39:04,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:39:04,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:39:04,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:39:04,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:39:04,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:39:04,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:39:04,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:39:04,678 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:39:04,728 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:39:04,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:39:04,731 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:39:04,731 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:39:04,731 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:39:04,732 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:39:04,732 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:39:04,732 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:39:04,732 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:39:04,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:39:04,735 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:39:04,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:39:04,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:39:04,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:39:04,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:39:04,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:39:04,737 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:39:04,737 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:39:04,738 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:39:04,738 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:39:04,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:39:04,738 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:39:04,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:39:04,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:39:04,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:39:04,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:39:04,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:39:04,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:39:04,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:39:04,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:39:04,741 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:39:04,741 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:39:04,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:39:04,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:39:04,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:39:04,743 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_ccd8f502-7fcf-424a-a8ff-26072c2402bc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7498db39da300a600c956afc9ee769ef7c520660 [2021-10-16 02:39:05,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:39:05,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:39:05,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:39:05,211 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:39:05,215 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:39:05,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2021-10-16 02:39:05,297 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/data/c1772fafc/758b09a1dbc343f8ab00917f57d11aa4/FLAGfdc7e1611 [2021-10-16 02:39:05,927 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:39:05,928 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2021-10-16 02:39:05,937 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/data/c1772fafc/758b09a1dbc343f8ab00917f57d11aa4/FLAGfdc7e1611 [2021-10-16 02:39:06,227 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/data/c1772fafc/758b09a1dbc343f8ab00917f57d11aa4 [2021-10-16 02:39:06,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:39:06,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:39:06,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:39:06,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:39:06,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:39:06,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:39:06" (1/1) ... [2021-10-16 02:39:06,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49279ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:06, skipping insertion in model container [2021-10-16 02:39:06,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:39:06" (1/1) ... [2021-10-16 02:39:06,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:39:06,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:39:06,451 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_ccd8f502-7fcf-424a-a8ff-26072c2402bc/sv-benchmarks/c/float-newlib/float_req_bl_1250.c[1719,1732] [2021-10-16 02:39:06,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:39:06,470 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:39:06,493 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_ccd8f502-7fcf-424a-a8ff-26072c2402bc/sv-benchmarks/c/float-newlib/float_req_bl_1250.c[1719,1732] [2021-10-16 02:39:06,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:39:06,527 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:39:06,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:06 WrapperNode [2021-10-16 02:39:06,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:39:06,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:39:06,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:39:06,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:39:06,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:06" (1/1) ... [2021-10-16 02:39:06,573 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:06" (1/1) ... [2021-10-16 02:39:06,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:39:06,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:39:06,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:39:06,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:39:06,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:06" (1/1) ... [2021-10-16 02:39:06,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:06" (1/1) ... [2021-10-16 02:39:06,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:06" (1/1) ... [2021-10-16 02:39:06,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:06" (1/1) ... [2021-10-16 02:39:06,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:06" (1/1) ... [2021-10-16 02:39:06,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:06" (1/1) ... [2021-10-16 02:39:06,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:06" (1/1) ... [2021-10-16 02:39:06,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:39:06,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:39:06,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:39:06,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:39:06,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:06" (1/1) ... [2021-10-16 02:39:06,679 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:39:06,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:39:06,714 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:39:06,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:39:06,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:39:06,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:39:06,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:39:06,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:39:06,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:39:06,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-16 02:39:06,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:39:07,092 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:39:07,092 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-16 02:39:07,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:39:07 BoogieIcfgContainer [2021-10-16 02:39:07,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:39:07,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:39:07,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:39:07,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:39:07,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:39:06" (1/3) ... [2021-10-16 02:39:07,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4797d209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:39:07, skipping insertion in model container [2021-10-16 02:39:07,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:39:06" (2/3) ... [2021-10-16 02:39:07,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4797d209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:39:07, skipping insertion in model container [2021-10-16 02:39:07,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:39:07" (3/3) ... [2021-10-16 02:39:07,103 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2021-10-16 02:39:07,109 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:39:07,109 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:39:07,222 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:39:07,234 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 02:39:07,235 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:39:07,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 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 02:39:07,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:39:07,303 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:39:07,304 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:39:07,306 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:39:07,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:39:07,317 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2021-10-16 02:39:07,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:39:07,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838269099] [2021-10-16 02:39:07,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:39:07,333 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:39:07,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:39:07,337 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:39:07,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:39:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:39:07,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:39:07,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:39:07,584 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 02:39:07,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:39:07,658 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 02:39:07,659 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:39:07,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838269099] [2021-10-16 02:39:07,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838269099] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:39:07,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:39:07,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:39:07,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307627625] [2021-10-16 02:39:07,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:39:07,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:39:07,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:39:07,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:39:07,705 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:39:07,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:39:07,729 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2021-10-16 02:39:07,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:39:07,731 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-16 02:39:07,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:39:07,742 INFO L225 Difference]: With dead ends: 54 [2021-10-16 02:39:07,743 INFO L226 Difference]: Without dead ends: 25 [2021-10-16 02:39:07,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:39:07,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-16 02:39:07,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-16 02:39:07,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 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 02:39:07,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2021-10-16 02:39:07,783 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2021-10-16 02:39:07,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:39:07,784 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2021-10-16 02:39:07,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:39:07,785 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2021-10-16 02:39:07,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:39:07,786 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:39:07,786 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:39:07,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:39:08,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:39:08,001 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:39:08,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:39:08,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2021-10-16 02:39:08,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:39:08,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461408349] [2021-10-16 02:39:08,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:39:08,007 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:39:08,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:39:08,008 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:39:08,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:39:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:39:08,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:39:08,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:39:08,222 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 02:39:08,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:39:08,306 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 02:39:08,307 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:39:08,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461408349] [2021-10-16 02:39:08,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461408349] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:39:08,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:39:08,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:39:08,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60988154] [2021-10-16 02:39:08,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:39:08,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:39:08,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:39:08,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:39:08,312 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 02:39:08,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:39:08,471 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2021-10-16 02:39:08,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:39:08,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-16 02:39:08,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:39:08,473 INFO L225 Difference]: With dead ends: 52 [2021-10-16 02:39:08,473 INFO L226 Difference]: Without dead ends: 47 [2021-10-16 02:39:08,474 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 45.0ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:39:08,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-16 02:39:08,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-10-16 02:39:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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 02:39:08,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-16 02:39:08,483 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2021-10-16 02:39:08,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:39:08,483 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-16 02:39:08,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 02:39:08,484 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-16 02:39:08,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 02:39:08,485 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:39:08,485 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:39:08,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:39:08,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:39:08,700 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:39:08,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:39:08,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2021-10-16 02:39:08,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:39:08,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391947119] [2021-10-16 02:39:08,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:39:08,702 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:39:08,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:39:08,703 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:39:08,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:39:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:39:08,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:39:08,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:39:09,180 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 02:39:09,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:39:09,365 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 02:39:09,366 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:39:09,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391947119] [2021-10-16 02:39:09,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391947119] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:39:09,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:39:09,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-16 02:39:09,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437284745] [2021-10-16 02:39:09,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:39:09,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:39:09,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:39:09,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:39:09,370 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 02:39:09,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:39:09,715 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-10-16 02:39:09,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:39:09,715 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 14 [2021-10-16 02:39:09,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:39:09,717 INFO L225 Difference]: With dead ends: 36 [2021-10-16 02:39:09,717 INFO L226 Difference]: Without dead ends: 27 [2021-10-16 02:39:09,718 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 339.1ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:39:09,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-16 02:39:09,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-10-16 02:39:09,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 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 02:39:09,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2021-10-16 02:39:09,723 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2021-10-16 02:39:09,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:39:09,724 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2021-10-16 02:39:09,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 02:39:09,724 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2021-10-16 02:39:09,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 02:39:09,725 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:39:09,725 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:39:09,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:39:09,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:39:09,946 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:39:09,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:39:09,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2021-10-16 02:39:09,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:39:09,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73752035] [2021-10-16 02:39:09,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:39:09,948 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:39:09,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:39:09,949 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:39:09,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:39:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:39:10,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:39:10,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:39:10,110 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 02:39:10,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:39:10,160 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 02:39:10,160 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:39:10,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73752035] [2021-10-16 02:39:10,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73752035] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:39:10,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:39:10,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:39:10,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833331386] [2021-10-16 02:39:10,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:39:10,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:39:10,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:39:10,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:39:10,163 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:39:10,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:39:10,285 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-10-16 02:39:10,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:39:10,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-16 02:39:10,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:39:10,287 INFO L225 Difference]: With dead ends: 52 [2021-10-16 02:39:10,287 INFO L226 Difference]: Without dead ends: 47 [2021-10-16 02:39:10,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 38.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:39:10,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-16 02:39:10,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-10-16 02:39:10,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 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 02:39:10,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-10-16 02:39:10,298 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2021-10-16 02:39:10,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:39:10,299 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-10-16 02:39:10,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:39:10,299 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-10-16 02:39:10,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:39:10,300 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:39:10,300 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:39:10,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:39:10,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:39:10,515 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:39:10,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:39:10,516 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2021-10-16 02:39:10,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:39:10,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651902841] [2021-10-16 02:39:10,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:39:10,518 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:39:10,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:39:10,519 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:39:10,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:39:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:39:10,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:39:10,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:39:10,987 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 02:39:10,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:39:11,189 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 02:39:11,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:39:11,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651902841] [2021-10-16 02:39:11,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651902841] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:39:11,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:39:11,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-16 02:39:11,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045171063] [2021-10-16 02:39:11,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 02:39:11,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:39:11,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 02:39:11,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:39:11,194 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 02:39:11,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:39:11,577 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2021-10-16 02:39:11,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:39:11,583 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 18 [2021-10-16 02:39:11,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:39:11,584 INFO L225 Difference]: With dead ends: 32 [2021-10-16 02:39:11,584 INFO L226 Difference]: Without dead ends: 23 [2021-10-16 02:39:11,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 458.7ms TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-16 02:39:11,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-16 02:39:11,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-16 02:39:11,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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 02:39:11,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-16 02:39:11,589 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2021-10-16 02:39:11,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:39:11,589 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-16 02:39:11,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 02:39:11,590 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-16 02:39:11,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 02:39:11,591 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:39:11,591 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:39:11,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:39:11,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:39:11,792 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:39:11,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:39:11,792 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2021-10-16 02:39:11,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:39:11,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763456824] [2021-10-16 02:39:11,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:39:11,793 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:39:11,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:39:11,794 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:39:11,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:39:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:39:11,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:39:11,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:39:12,213 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 02:39:12,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:39:12,360 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 02:39:12,360 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:39:12,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763456824] [2021-10-16 02:39:12,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763456824] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:39:12,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:39:12,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-16 02:39:12,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078146226] [2021-10-16 02:39:12,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:39:12,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:39:12,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:39:12,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:39:12,363 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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 02:39:12,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:39:12,606 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-10-16 02:39:12,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:39:12,606 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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 19 [2021-10-16 02:39:12,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:39:12,607 INFO L225 Difference]: With dead ends: 23 [2021-10-16 02:39:12,607 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:39:12,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 307.0ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:39:12,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:39:12,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:39:12,608 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 02:39:12,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:39:12,608 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-10-16 02:39:12,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:39:12,609 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:39:12,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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 02:39:12,609 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:39:12,609 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:39:12,612 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:39:12,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-16 02:39:12,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:39:12,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:39:12,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:39:12,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:39:12,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:39:12,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:39:12,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:39:12,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:39:12,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:39:12,992 INFO L853 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) [2021-10-16 02:39:12,992 INFO L857 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2021-10-16 02:39:12,992 INFO L857 garLoopResultBuilder]: For program point L52-2(line 52) no Hoare annotation was computed. [2021-10-16 02:39:12,992 INFO L853 garLoopResultBuilder]: At program point L52-3(lines 44 53) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2021-10-16 02:39:12,992 INFO L857 garLoopResultBuilder]: For program point L32(lines 32 41) no Hoare annotation was computed. [2021-10-16 02:39:12,993 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:39:12,993 INFO L857 garLoopResultBuilder]: For program point L32-1(lines 32 41) no Hoare annotation was computed. [2021-10-16 02:39:12,993 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:39:12,993 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:39:12,993 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 67) no Hoare annotation was computed. [2021-10-16 02:39:12,993 INFO L857 garLoopResultBuilder]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2021-10-16 02:39:12,994 INFO L853 garLoopResultBuilder]: At program point L24-2(lines 24 28) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x))) [2021-10-16 02:39:12,994 INFO L857 garLoopResultBuilder]: For program point L24-3(lines 21 42) no Hoare annotation was computed. [2021-10-16 02:39:12,994 INFO L857 garLoopResultBuilder]: For program point L24-5(lines 24 28) no Hoare annotation was computed. [2021-10-16 02:39:12,995 INFO L853 garLoopResultBuilder]: At program point L24-6(lines 24 28) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x))) [2021-10-16 02:39:12,995 INFO L857 garLoopResultBuilder]: For program point L24-7(lines 21 42) no Hoare annotation was computed. [2021-10-16 02:39:12,995 INFO L857 garLoopResultBuilder]: For program point L49(lines 49 51) no Hoare annotation was computed. [2021-10-16 02:39:12,995 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 47) no Hoare annotation was computed. [2021-10-16 02:39:12,995 INFO L853 garLoopResultBuilder]: At program point L41(lines 21 42) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x))) [2021-10-16 02:39:12,996 INFO L853 garLoopResultBuilder]: At program point L41-1(lines 21 42) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)))) (or (and .cse0 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x))) (and .cse0 (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|))))) [2021-10-16 02:39:12,997 INFO L857 garLoopResultBuilder]: For program point L66(lines 66 69) no Hoare annotation was computed. [2021-10-16 02:39:12,998 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:39:12,998 INFO L860 garLoopResultBuilder]: At program point L71(lines 58 72) the Hoare annotation is: true [2021-10-16 02:39:12,998 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 41) no Hoare annotation was computed. [2021-10-16 02:39:12,998 INFO L857 garLoopResultBuilder]: For program point L38-1(lines 38 41) no Hoare annotation was computed. [2021-10-16 02:39:12,999 INFO L857 garLoopResultBuilder]: For program point L67(line 67) no Hoare annotation was computed. [2021-10-16 02:39:12,999 INFO L857 garLoopResultBuilder]: For program point L35(lines 35 41) no Hoare annotation was computed. [2021-10-16 02:39:12,999 INFO L857 garLoopResultBuilder]: For program point L35-1(lines 35 41) no Hoare annotation was computed. [2021-10-16 02:39:13,004 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:39:13,020 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:39:13,024 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:39:13,026 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:39:13,027 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:39:13,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:39:13 BoogieIcfgContainer [2021-10-16 02:39:13,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:39:13,033 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:39:13,033 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:39:13,033 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:39:13,034 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:39:07" (3/4) ... [2021-10-16 02:39:13,039 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:39:13,055 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-16 02:39:13,056 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-16 02:39:13,057 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-16 02:39:13,058 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:39:13,097 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~FLOAT(y, y) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2021-10-16 02:39:13,099 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(y, y) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result [2021-10-16 02:39:13,101 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x)) || (!~fp.eq~FLOAT(y, y) && !(0bv32 == \result)) [2021-10-16 02:39:13,148 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:39:13,148 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:39:13,151 INFO L168 Benchmark]: Toolchain (without parser) took 6915.75 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 46.5 MB in the beginning and 62.2 MB in the end (delta: -15.6 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:39:13,152 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 67.1 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:39:13,154 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.41 ms. Allocated memory is still 67.1 MB. Free memory was 46.4 MB in the beginning and 50.2 MB in the end (delta: -3.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:39:13,156 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.07 ms. Allocated memory is still 67.1 MB. Free memory was 50.2 MB in the beginning and 48.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:39:13,156 INFO L168 Benchmark]: Boogie Preprocessor took 41.81 ms. Allocated memory is still 67.1 MB. Free memory was 48.4 MB in the beginning and 47.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:39:13,157 INFO L168 Benchmark]: RCFGBuilder took 431.32 ms. Allocated memory is still 67.1 MB. Free memory was 47.1 MB in the beginning and 34.7 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:39:13,157 INFO L168 Benchmark]: TraceAbstraction took 5935.53 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 34.3 MB in the beginning and 30.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:39:13,158 INFO L168 Benchmark]: Witness Printer took 115.74 ms. Allocated memory is still 81.8 MB. Free memory was 30.3 MB in the beginning and 62.2 MB in the end (delta: -31.8 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:39:13,161 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 67.1 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 293.41 ms. Allocated memory is still 67.1 MB. Free memory was 46.4 MB in the beginning and 50.2 MB in the end (delta: -3.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.07 ms. Allocated memory is still 67.1 MB. Free memory was 50.2 MB in the beginning and 48.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.81 ms. Allocated memory is still 67.1 MB. Free memory was 48.4 MB in the beginning and 47.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 431.32 ms. Allocated memory is still 67.1 MB. Free memory was 47.1 MB in the beginning and 34.7 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5935.53 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 34.3 MB in the beginning and 30.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. * Witness Printer took 115.74 ms. Allocated memory is still 81.8 MB. Free memory was 30.3 MB in the beginning and 62.2 MB in the end (delta: -31.8 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 67]: 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, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5784.4ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 54.7ms, AutomataDifference: 1352.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 175.3ms, InitialAbstractionConstructionTime: 18.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 182 SDtfs, 126 SDslu, 523 SDs, 0 SdLazy, 132 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 464.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1188.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 50.7ms AutomataMinimizationTime, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 227 FormulaSimplificationTreeSizeReduction, 77.3ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 91.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 98.1ms SsaConstructionTime, 268.3ms SatisfiabilityAnalysisTime, 2009.3ms InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 538 SizeOfPredicates, 32 NumberOfNonLiveVariables, 359 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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: 21]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 56]: Loop Invariant [2021-10-16 02:39:13,174 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:39:13,174 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (!~fp.eq~FLOAT(y, y) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result - InvariantResult [Line: 44]: Loop Invariant [2021-10-16 02:39:13,175 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:39:13,176 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: !~fp.eq~FLOAT(y, y) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x)) || (!~fp.eq~FLOAT(y, y) && !(0bv32 == \result)) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:39:13,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd8f502-7fcf-424a-a8ff-26072c2402bc/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...