./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG --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 54bc71b58dbe807c61e65d61687d7dcd868b453f3ec0cc1b5cee1fe449bc0bdf .................................................................................................................................................................................................................................................. 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_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG --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 54bc71b58dbe807c61e65d61687d7dcd868b453f3ec0cc1b5cee1fe449bc0bdf ................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:36:51,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:36:51,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:36:51,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:36:51,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:36:51,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:36:51,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:36:51,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:36:51,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:36:51,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:36:51,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:36:51,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:36:51,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:36:51,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:36:51,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:36:51,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:36:51,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:36:51,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:36:51,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:36:51,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:36:51,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:36:51,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:36:51,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:36:51,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:36:51,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:36:51,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:36:51,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:36:51,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:36:51,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:36:51,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:36:51,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:36:51,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:36:51,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:36:51,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:36:51,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:36:51,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:36:51,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:36:51,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:36:51,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:36:51,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:36:51,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:36:51,457 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:36:51,489 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:36:51,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:36:51,490 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:36:51,491 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:36:51,491 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:36:51,491 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:36:51,491 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:36:51,492 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:36:51,492 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:36:51,492 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:36:51,493 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:36:51,493 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:36:51,493 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:36:51,493 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:36:51,494 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:36:51,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:36:51,495 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:36:51,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:36:51,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:36:51,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:36:51,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:36:51,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:36:51,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:36:51,497 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:36:51,497 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:36:51,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:36:51,498 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:36:51,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:36:51,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:36:51,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:36:51,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:36:51,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:36:51,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:36:51,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:36:51,500 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:36:51,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:36:51,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:36:51,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:36:51,501 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:36:51,502 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_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54bc71b58dbe807c61e65d61687d7dcd868b453f3ec0cc1b5cee1fe449bc0bdf [2021-10-29 04:36:51,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:36:51,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:36:51,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:36:51,977 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:36:51,978 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:36:51,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/floats-cdfpl/square_3.i [2021-10-29 04:36:52,067 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/data/6913d6ccb/bb63d1dd84984ad1ab89e8cf59030f1a/FLAG98c39043b [2021-10-29 04:36:52,785 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:36:52,785 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/sv-benchmarks/c/floats-cdfpl/square_3.i [2021-10-29 04:36:52,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/data/6913d6ccb/bb63d1dd84984ad1ab89e8cf59030f1a/FLAG98c39043b [2021-10-29 04:36:53,136 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/data/6913d6ccb/bb63d1dd84984ad1ab89e8cf59030f1a [2021-10-29 04:36:53,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:36:53,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:36:53,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:36:53,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:36:53,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:36:53,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:36:53" (1/1) ... [2021-10-29 04:36:53,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a84bf4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:53, skipping insertion in model container [2021-10-29 04:36:53,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:36:53" (1/1) ... [2021-10-29 04:36:53,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:36:53,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:36:53,417 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_93ef6012-b08e-4636-916f-6ff209b17ffc/sv-benchmarks/c/floats-cdfpl/square_3.i[1131,1144] [2021-10-29 04:36:53,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:36:53,433 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:36:53,453 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_93ef6012-b08e-4636-916f-6ff209b17ffc/sv-benchmarks/c/floats-cdfpl/square_3.i[1131,1144] [2021-10-29 04:36:53,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:36:53,471 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:36:53,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:53 WrapperNode [2021-10-29 04:36:53,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:36:53,473 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:36:53,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:36:53,474 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:36:53,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:53" (1/1) ... [2021-10-29 04:36:53,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:53" (1/1) ... [2021-10-29 04:36:53,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:36:53,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:36:53,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:36:53,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:36:53,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:53" (1/1) ... [2021-10-29 04:36:53,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:53" (1/1) ... [2021-10-29 04:36:53,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:53" (1/1) ... [2021-10-29 04:36:53,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:53" (1/1) ... [2021-10-29 04:36:53,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:53" (1/1) ... [2021-10-29 04:36:53,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:53" (1/1) ... [2021-10-29 04:36:53,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:53" (1/1) ... [2021-10-29 04:36:53,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:36:53,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:36:53,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:36:53,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:36:53,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:53" (1/1) ... [2021-10-29 04:36:53,556 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:36:53,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:36:53,588 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:36:53,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:36:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:36:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:36:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:36:53,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:36:53,953 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:36:53,953 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-29 04:36:53,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:36:53 BoogieIcfgContainer [2021-10-29 04:36:53,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:36:53,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:36:53,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:36:53,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:36:53,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:36:53" (1/3) ... [2021-10-29 04:36:53,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3ef576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:36:53, skipping insertion in model container [2021-10-29 04:36:53,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:53" (2/3) ... [2021-10-29 04:36:53,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3ef576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:36:53, skipping insertion in model container [2021-10-29 04:36:53,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:36:53" (3/3) ... [2021-10-29 04:36:53,989 INFO L111 eAbstractionObserver]: Analyzing ICFG square_3.i [2021-10-29 04:36:53,995 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:36:53,995 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:36:54,092 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:36:54,112 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:36:54,112 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 04:36:54,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:36:54,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 04:36:54,135 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:36:54,136 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 04:36:54,137 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:36:54,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:36:54,144 INFO L85 PathProgramCache]: Analyzing trace with hash 56123, now seen corresponding path program 1 times [2021-10-29 04:36:54,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:36:54,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116640662] [2021-10-29 04:36:54,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:36:54,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:36:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:36:54,305 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:36:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:36:54,397 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 04:36:54,400 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:36:54,402 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:36:54,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:36:54,413 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 04:36:54,417 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:36:54,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:36:54 BoogieIcfgContainer [2021-10-29 04:36:54,448 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:36:54,453 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:36:54,453 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:36:54,453 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:36:54,454 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:36:53" (3/4) ... [2021-10-29 04:36:54,458 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 04:36:54,459 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:36:54,465 INFO L168 Benchmark]: Toolchain (without parser) took 1318.35 ms. Allocated memory is still 100.7 MB. Free memory was 64.3 MB in the beginning and 49.1 MB in the end (delta: 15.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2021-10-29 04:36:54,467 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 100.7 MB. Free memory was 80.6 MB in the beginning and 80.6 MB in the end (delta: 58.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:36:54,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.49 ms. Allocated memory is still 100.7 MB. Free memory was 64.2 MB in the beginning and 75.8 MB in the end (delta: -11.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:36:54,471 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.36 ms. Allocated memory is still 100.7 MB. Free memory was 75.8 MB in the beginning and 74.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:36:54,472 INFO L168 Benchmark]: Boogie Preprocessor took 25.68 ms. Allocated memory is still 100.7 MB. Free memory was 74.3 MB in the beginning and 73.4 MB in the end (delta: 895.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:36:54,474 INFO L168 Benchmark]: RCFGBuilder took 411.53 ms. Allocated memory is still 100.7 MB. Free memory was 73.4 MB in the beginning and 62.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:36:54,481 INFO L168 Benchmark]: TraceAbstraction took 489.44 ms. Allocated memory is still 100.7 MB. Free memory was 62.1 MB in the beginning and 49.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:36:54,483 INFO L168 Benchmark]: Witness Printer took 6.95 ms. Allocated memory is still 100.7 MB. Free memory was 49.4 MB in the beginning and 49.1 MB in the end (delta: 300.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:36:54,491 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 100.7 MB. Free memory was 80.6 MB in the beginning and 80.6 MB in the end (delta: 58.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 327.49 ms. Allocated memory is still 100.7 MB. Free memory was 64.2 MB in the beginning and 75.8 MB in the end (delta: -11.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.36 ms. Allocated memory is still 100.7 MB. Free memory was 75.8 MB in the beginning and 74.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.68 ms. Allocated memory is still 100.7 MB. Free memory was 74.3 MB in the beginning and 73.4 MB in the end (delta: 895.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 411.53 ms. Allocated memory is still 100.7 MB. Free memory was 73.4 MB in the beginning and 62.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 489.44 ms. Allocated memory is still 100.7 MB. Free memory was 62.1 MB in the beginning and 49.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.95 ms. Allocated memory is still 100.7 MB. Free memory was 49.4 MB in the beginning and 49.1 MB in the end (delta: 300.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 29]: 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 28, overapproximation of someBinaryArithmeticFLOAToperation at line 26. Possible FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25-L26] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L28] COND TRUE !(result >= 0.0f && result < 1.39843f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 04:36:54,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/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-b2eff8b [2021-10-29 04:36:57,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:36:57,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:36:57,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:36:57,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:36:57,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:36:57,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:36:57,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:36:57,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:36:57,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:36:57,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:36:57,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:36:57,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:36:57,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:36:57,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:36:57,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:36:57,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:36:57,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:36:57,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:36:57,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:36:57,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:36:57,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:36:57,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:36:57,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:36:57,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:36:57,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:36:57,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:36:57,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:36:57,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:36:57,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:36:57,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:36:57,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:36:57,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:36:57,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:36:57,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:36:57,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:36:57,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:36:57,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:36:57,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:36:57,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:36:57,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:36:57,607 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 04:36:57,666 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:36:57,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:36:57,668 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:36:57,669 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:36:57,669 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:36:57,669 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:36:57,670 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:36:57,670 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:36:57,670 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:36:57,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:36:57,673 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:36:57,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:36:57,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:36:57,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:36:57,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:36:57,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:36:57,675 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:36:57,675 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 04:36:57,676 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 04:36:57,676 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:36:57,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:36:57,677 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:36:57,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:36:57,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:36:57,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 04:36:57,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:36:57,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:36:57,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:36:57,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:36:57,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:36:57,679 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 04:36:57,679 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 04:36:57,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:36:57,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:36:57,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:36:57,681 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_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54bc71b58dbe807c61e65d61687d7dcd868b453f3ec0cc1b5cee1fe449bc0bdf [2021-10-29 04:36:58,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:36:58,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:36:58,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:36:58,237 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:36:58,238 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:36:58,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/floats-cdfpl/square_3.i [2021-10-29 04:36:58,329 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/data/e3a1ab164/0137eed455a14bfd85111579d19fa31a/FLAGf70896233 [2021-10-29 04:36:59,031 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:36:59,033 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/sv-benchmarks/c/floats-cdfpl/square_3.i [2021-10-29 04:36:59,041 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/data/e3a1ab164/0137eed455a14bfd85111579d19fa31a/FLAGf70896233 [2021-10-29 04:36:59,378 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/data/e3a1ab164/0137eed455a14bfd85111579d19fa31a [2021-10-29 04:36:59,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:36:59,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:36:59,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:36:59,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:36:59,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:36:59,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:36:59" (1/1) ... [2021-10-29 04:36:59,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cd208d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:59, skipping insertion in model container [2021-10-29 04:36:59,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:36:59" (1/1) ... [2021-10-29 04:36:59,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:36:59,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:36:59,650 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_93ef6012-b08e-4636-916f-6ff209b17ffc/sv-benchmarks/c/floats-cdfpl/square_3.i[1131,1144] [2021-10-29 04:36:59,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:36:59,671 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:36:59,693 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_93ef6012-b08e-4636-916f-6ff209b17ffc/sv-benchmarks/c/floats-cdfpl/square_3.i[1131,1144] [2021-10-29 04:36:59,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:36:59,713 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:36:59,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:59 WrapperNode [2021-10-29 04:36:59,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:36:59,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:36:59,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:36:59,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:36:59,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:59" (1/1) ... [2021-10-29 04:36:59,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:59" (1/1) ... [2021-10-29 04:36:59,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:36:59,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:36:59,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:36:59,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:36:59,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:59" (1/1) ... [2021-10-29 04:36:59,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:59" (1/1) ... [2021-10-29 04:36:59,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:59" (1/1) ... [2021-10-29 04:36:59,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:59" (1/1) ... [2021-10-29 04:36:59,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:59" (1/1) ... [2021-10-29 04:36:59,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:59" (1/1) ... [2021-10-29 04:36:59,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:59" (1/1) ... [2021-10-29 04:36:59,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:36:59,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:36:59,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:36:59,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:36:59,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:59" (1/1) ... [2021-10-29 04:36:59,853 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:36:59,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:36:59,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:36:59,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:36:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 04:36:59,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:36:59,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:36:59,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:37:02,311 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:37:02,311 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-29 04:37:02,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:37:02 BoogieIcfgContainer [2021-10-29 04:37:02,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:37:02,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:37:02,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:37:02,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:37:02,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:36:59" (1/3) ... [2021-10-29 04:37:02,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f2b912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:37:02, skipping insertion in model container [2021-10-29 04:37:02,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:59" (2/3) ... [2021-10-29 04:37:02,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f2b912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:37:02, skipping insertion in model container [2021-10-29 04:37:02,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:37:02" (3/3) ... [2021-10-29 04:37:02,326 INFO L111 eAbstractionObserver]: Analyzing ICFG square_3.i [2021-10-29 04:37:02,333 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:37:02,333 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:37:02,385 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:37:02,392 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:37:02,392 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 04:37:02,406 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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) [2021-10-29 04:37:02,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 04:37:02,411 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:37:02,412 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 04:37:02,413 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:37:02,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:37:02,426 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-29 04:37:02,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:37:02,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752202478] [2021-10-29 04:37:02,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:37:02,443 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:37:02,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:37:02,445 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:37:02,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 04:37:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:37:03,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 04:37:03,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:37:03,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:37:03,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:37:03,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:37:03,268 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:37:03,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752202478] [2021-10-29 04:37:03,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752202478] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:37:03,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:37:03,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 04:37:03,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697589473] [2021-10-29 04:37:03,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 04:37:03,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:37:03,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 04:37:03,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:37:03,294 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:37:03,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:37:03,308 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-29 04:37:03,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 04:37:03,310 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-29 04:37:03,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:37:03,318 INFO L225 Difference]: With dead ends: 19 [2021-10-29 04:37:03,319 INFO L226 Difference]: Without dead ends: 7 [2021-10-29 04:37:03,322 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:37:03,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-29 04:37:03,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-29 04:37:03,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:37:03,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-29 04:37:03,350 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-29 04:37:03,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:37:03,351 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-29 04:37:03,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:37:03,351 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-29 04:37:03,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 04:37:03,352 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:37:03,352 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 04:37:03,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:37:03,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:37:03,567 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:37:03,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:37:03,568 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-29 04:37:03,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:37:03,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872252858] [2021-10-29 04:37:03,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:37:03,570 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:37:03,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:37:03,576 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:37:03,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 04:39:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:39:46,693 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:41:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:41:24,080 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 04:41:24,080 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:41:24,081 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:41:24,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:41:24,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:41:24,286 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-29 04:41:24,289 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:41:24,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:41:24 BoogieIcfgContainer [2021-10-29 04:41:24,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:41:24,310 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:41:24,310 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:41:24,310 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:41:24,311 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:37:02" (3/4) ... [2021-10-29 04:41:24,313 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 04:41:24,344 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:41:24,344 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:41:24,346 INFO L168 Benchmark]: Toolchain (without parser) took 264962.36 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 30.8 MB in the beginning and 38.7 MB in the end (delta: -7.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:41:24,347 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 54.5 MB. Free memory was 34.5 MB in the beginning and 34.4 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:41:24,348 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.30 ms. Allocated memory is still 54.5 MB. Free memory was 30.6 MB in the beginning and 33.9 MB in the end (delta: -3.3 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:41:24,349 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.18 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 33.9 MB in the beginning and 58.0 MB in the end (delta: -24.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:41:24,349 INFO L168 Benchmark]: Boogie Preprocessor took 33.15 ms. Allocated memory is still 75.5 MB. Free memory was 58.0 MB in the beginning and 56.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:41:24,350 INFO L168 Benchmark]: RCFGBuilder took 2471.17 ms. Allocated memory is still 75.5 MB. Free memory was 56.9 MB in the beginning and 48.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:41:24,356 INFO L168 Benchmark]: TraceAbstraction took 261992.22 ms. Allocated memory is still 75.5 MB. Free memory was 47.4 MB in the beginning and 40.5 MB in the end (delta: 6.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:41:24,357 INFO L168 Benchmark]: Witness Printer took 34.72 ms. Allocated memory is still 75.5 MB. Free memory was 40.5 MB in the beginning and 38.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:41:24,361 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 54.5 MB. Free memory was 34.5 MB in the beginning and 34.4 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.30 ms. Allocated memory is still 54.5 MB. Free memory was 30.6 MB in the beginning and 33.9 MB in the end (delta: -3.3 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.18 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 33.9 MB in the beginning and 58.0 MB in the end (delta: -24.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.15 ms. Allocated memory is still 75.5 MB. Free memory was 58.0 MB in the beginning and 56.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2471.17 ms. Allocated memory is still 75.5 MB. Free memory was 56.9 MB in the beginning and 48.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 261992.22 ms. Allocated memory is still 75.5 MB. Free memory was 47.4 MB in the beginning and 40.5 MB in the end (delta: 6.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Witness Printer took 34.72 ms. Allocated memory is still 75.5 MB. Free memory was 40.5 MB in the beginning and 38.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 29]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25-L26] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L28] COND TRUE !(result >= 0.0f && result < 1.39843f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 261.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 163.6s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-29 04:41:24,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ef6012-b08e-4636-916f-6ff209b17ffc/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...