./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 075a76806290abf75c2d2bbc3aed8400bd808fbae1a9b71a2d432aac31dd29da --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:04:34,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:04:34,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:04:34,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:04:34,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:04:34,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:04:34,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:04:34,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:04:34,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:04:34,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:04:34,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:04:34,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:04:34,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:04:34,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:04:34,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:04:34,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:04:34,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:04:34,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:04:34,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:04:34,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:04:34,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:04:34,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:04:34,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:04:34,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:04:34,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:04:34,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:04:34,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:04:34,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:04:34,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:04:34,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:04:34,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:04:34,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:04:34,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:04:34,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:04:34,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:04:34,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:04:34,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:04:34,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:04:34,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:04:34,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:04:34,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:04:34,642 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:04:34,694 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:04:34,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:04:34,694 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:04:34,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:04:34,695 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:04:34,696 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:04:34,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:04:34,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:04:34,697 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:04:34,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:04:34,698 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:04:34,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:04:34,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:04:34,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:04:34,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:04:34,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:04:34,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:04:34,700 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:04:34,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:04:34,700 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:04:34,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:04:34,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:04:34,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:04:34,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:04:34,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:04:34,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:04:34,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:04:34,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:04:34,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:04:34,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:04:34,704 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:04:34,704 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:04:34,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:04:34,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:04:34,705 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 075a76806290abf75c2d2bbc3aed8400bd808fbae1a9b71a2d432aac31dd29da [2021-11-20 07:04:34,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:04:35,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:04:35,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:04:35,007 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:04:35,008 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:04:35,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2021-11-20 07:04:35,087 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/data/e3d2643df/27774d21303d4c158936d37c85da8e29/FLAG5764629de [2021-11-20 07:04:35,632 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:04:35,633 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2021-11-20 07:04:35,647 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/data/e3d2643df/27774d21303d4c158936d37c85da8e29/FLAG5764629de [2021-11-20 07:04:35,998 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/data/e3d2643df/27774d21303d4c158936d37c85da8e29 [2021-11-20 07:04:36,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:04:36,002 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:04:36,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:04:36,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:04:36,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:04:36,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:04:35" (1/1) ... [2021-11-20 07:04:36,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53ad3b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:36, skipping insertion in model container [2021-11-20 07:04:36,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:04:35" (1/1) ... [2021-11-20 07:04:36,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:04:36,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:04:36,359 WARN L230 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_ee550c8b-9f4b-464b-983d-253d7ce1201d/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2021-11-20 07:04:36,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:04:36,375 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:04:36,423 WARN L230 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_ee550c8b-9f4b-464b-983d-253d7ce1201d/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2021-11-20 07:04:36,424 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:04:36,447 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:04:36,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:36 WrapperNode [2021-11-20 07:04:36,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:04:36,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:04:36,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:04:36,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:04:36,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:36" (1/1) ... [2021-11-20 07:04:36,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:36" (1/1) ... [2021-11-20 07:04:36,520 INFO L137 Inliner]: procedures = 19, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 198 [2021-11-20 07:04:36,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:04:36,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:04:36,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:04:36,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:04:36,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:36" (1/1) ... [2021-11-20 07:04:36,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:36" (1/1) ... [2021-11-20 07:04:36,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:36" (1/1) ... [2021-11-20 07:04:36,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:36" (1/1) ... [2021-11-20 07:04:36,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:36" (1/1) ... [2021-11-20 07:04:36,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:36" (1/1) ... [2021-11-20 07:04:36,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:36" (1/1) ... [2021-11-20 07:04:36,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:04:36,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:04:36,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:04:36,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:04:36,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:36" (1/1) ... [2021-11-20 07:04:36,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:04:36,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:04:36,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:04:36,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:04:36,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:04:36,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:04:36,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:04:36,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-20 07:04:36,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:04:36,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-20 07:04:36,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:04:36,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:04:36,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:04:36,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-20 07:04:36,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:04:36,835 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:04:36,837 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:04:37,198 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:04:37,206 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:04:37,206 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-20 07:04:37,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:04:37 BoogieIcfgContainer [2021-11-20 07:04:37,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:04:37,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:04:37,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:04:37,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:04:37,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:04:35" (1/3) ... [2021-11-20 07:04:37,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785fb9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:04:37, skipping insertion in model container [2021-11-20 07:04:37,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:36" (2/3) ... [2021-11-20 07:04:37,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785fb9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:04:37, skipping insertion in model container [2021-11-20 07:04:37,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:04:37" (3/3) ... [2021-11-20 07:04:37,224 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2021-11-20 07:04:37,230 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:04:37,231 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:04:37,294 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:04:37,303 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=PETRI_NET, 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 [2021-11-20 07:04:37,303 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:04:37,323 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 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) [2021-11-20 07:04:37,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 07:04:37,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:04:37,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:04:37,333 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:04:37,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:04:37,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1030429181, now seen corresponding path program 1 times [2021-11-20 07:04:37,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:04:37,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266412704] [2021-11-20 07:04:37,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:04:37,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:04:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:04:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:04:37,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:04:37,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266412704] [2021-11-20 07:04:37,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266412704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:04:37,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:04:37,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:04:37,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201784674] [2021-11-20 07:04:37,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:04:37,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:04:37,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:04:37,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:04:37,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:04:37,603 INFO L87 Difference]: Start difference. First operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 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) [2021-11-20 07:04:37,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:04:37,627 INFO L93 Difference]: Finished difference Result 72 states and 112 transitions. [2021-11-20 07:04:37,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:04:37,629 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 [2021-11-20 07:04:37,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:04:37,640 INFO L225 Difference]: With dead ends: 72 [2021-11-20 07:04:37,641 INFO L226 Difference]: Without dead ends: 34 [2021-11-20 07:04:37,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:04:37,650 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:04:37,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:04:37,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-20 07:04:37,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-20 07:04:37,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 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) [2021-11-20 07:04:37,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2021-11-20 07:04:37,691 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 10 [2021-11-20 07:04:37,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:04:37,691 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2021-11-20 07:04:37,692 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) [2021-11-20 07:04:37,692 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2021-11-20 07:04:37,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 07:04:37,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:04:37,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:04:37,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:04:37,694 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:04:37,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:04:37,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1304878016, now seen corresponding path program 1 times [2021-11-20 07:04:37,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:04:37,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822749074] [2021-11-20 07:04:37,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:04:37,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:04:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:04:37,807 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:04:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:04:37,926 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:04:37,926 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 07:04:37,934 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 07:04:37,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:04:37,944 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-20 07:04:37,950 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 07:04:38,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:04:38 BoogieIcfgContainer [2021-11-20 07:04:38,029 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 07:04:38,030 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:04:38,030 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:04:38,030 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:04:38,035 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:04:37" (3/4) ... [2021-11-20 07:04:38,039 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 07:04:38,039 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:04:38,041 INFO L158 Benchmark]: Toolchain (without parser) took 2037.54ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 61.5MB in the beginning and 86.1MB in the end (delta: -24.7MB). Peak memory consumption was 394.9kB. Max. memory is 16.1GB. [2021-11-20 07:04:38,042 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 92.3MB. Free memory was 46.7MB in the beginning and 46.6MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:04:38,051 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.81ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 61.5MB in the beginning and 90.9MB in the end (delta: -29.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:04:38,053 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.03ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 88.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:04:38,054 INFO L158 Benchmark]: Boogie Preprocessor took 88.31ms. Allocated memory is still 117.4MB. Free memory was 88.8MB in the beginning and 86.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:04:38,055 INFO L158 Benchmark]: RCFGBuilder took 598.46ms. Allocated memory is still 117.4MB. Free memory was 86.7MB in the beginning and 72.4MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 07:04:38,055 INFO L158 Benchmark]: TraceAbstraction took 817.66ms. Allocated memory is still 117.4MB. Free memory was 72.0MB in the beginning and 86.8MB in the end (delta: -14.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:04:38,056 INFO L158 Benchmark]: Witness Printer took 8.93ms. Allocated memory is still 117.4MB. Free memory was 86.8MB in the beginning and 86.1MB in the end (delta: 662.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:04:38,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 92.3MB. Free memory was 46.7MB in the beginning and 46.6MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 444.81ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 61.5MB in the beginning and 90.9MB in the end (delta: -29.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.03ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 88.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 88.31ms. Allocated memory is still 117.4MB. Free memory was 88.8MB in the beginning and 86.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 598.46ms. Allocated memory is still 117.4MB. Free memory was 86.7MB in the beginning and 72.4MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 817.66ms. Allocated memory is still 117.4MB. Free memory was 72.0MB in the beginning and 86.8MB in the end (delta: -14.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 8.93ms. Allocated memory is still 117.4MB. Free memory was 86.8MB in the beginning and 86.1MB in the end (delta: 662.1kB). There was no memory consumed. Max. memory is 16.1GB. * 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: 144]: 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 143, overapproximation of someUnaryDOUBLEoperation at line 46, overapproximation of bitwiseAnd at line 64, overapproximation of someUnaryFLOAToperation at line 139, overapproximation of someBinaryArithmeticFLOAToperation at line 67. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L31-L36] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L38-L43] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L45-L49] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L51-L53] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L139] float x = -0.0f; [L140] CALL, EXPR atan_float(x) [L56] float w, s1, s2, z; [L57] __int32_t ix, hx, id; VAL [\old(x)=1000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=1000000000000000000000000000001] [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (hx) = gf_u.word [L64] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=-1, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=1000000000000000000000000000001] [L65] COND TRUE ix >= 0x50800000 VAL [\old(x)=1000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=-1, ix=2139095041, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=1000000000000000000000000000001] [L66] COND TRUE ((ix) > 0x7f800000L) [L67] return x + x; VAL [\old(x)=1000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=-1, ix=2139095041, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=1000000000000000000000000000001] [L140] RET, EXPR atan_float(x) [L140] float res = atan_float(x); [L143] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000002, res == -0.0f && __signbit_float(res) == 1=0, x=1000000000000000000000000000001] [L143] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L144] reach_error() VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000002, x=1000000000000000000000000000001] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 48 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 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 [2021-11-20 07:04:38,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 075a76806290abf75c2d2bbc3aed8400bd808fbae1a9b71a2d432aac31dd29da --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:04:40,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:04:40,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:04:40,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:04:40,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:04:40,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:04:40,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:04:40,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:04:40,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:04:40,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:04:40,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:04:40,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:04:40,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:04:40,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:04:41,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:04:41,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:04:41,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:04:41,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:04:41,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:04:41,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:04:41,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:04:41,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:04:41,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:04:41,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:04:41,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:04:41,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:04:41,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:04:41,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:04:41,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:04:41,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:04:41,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:04:41,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:04:41,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:04:41,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:04:41,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:04:41,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:04:41,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:04:41,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:04:41,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:04:41,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:04:41,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:04:41,093 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-20 07:04:41,148 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:04:41,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:04:41,150 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:04:41,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:04:41,151 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:04:41,152 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:04:41,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:04:41,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:04:41,154 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:04:41,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:04:41,156 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:04:41,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:04:41,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:04:41,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:04:41,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:04:41,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:04:41,158 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:04:41,159 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 07:04:41,159 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 07:04:41,159 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:04:41,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:04:41,160 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:04:41,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:04:41,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:04:41,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:04:41,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:04:41,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:04:41,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:04:41,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:04:41,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:04:41,163 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 07:04:41,163 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 07:04:41,164 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:04:41,164 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:04:41,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:04:41,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:04:41,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 07:04:41,166 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_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 075a76806290abf75c2d2bbc3aed8400bd808fbae1a9b71a2d432aac31dd29da [2021-11-20 07:04:41,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:04:41,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:04:41,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:04:41,681 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:04:41,681 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:04:41,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2021-11-20 07:04:41,783 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/data/c29e3e683/acf74cd1dddb45ee8a912bb032397a68/FLAG6e7f16187 [2021-11-20 07:04:42,455 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:04:42,456 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2021-11-20 07:04:42,465 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/data/c29e3e683/acf74cd1dddb45ee8a912bb032397a68/FLAG6e7f16187 [2021-11-20 07:04:42,778 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/data/c29e3e683/acf74cd1dddb45ee8a912bb032397a68 [2021-11-20 07:04:42,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:04:42,783 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:04:42,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:04:42,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:04:42,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:04:42,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:04:42" (1/1) ... [2021-11-20 07:04:42,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e164011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:42, skipping insertion in model container [2021-11-20 07:04:42,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:04:42" (1/1) ... [2021-11-20 07:04:42,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:04:42,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:04:43,101 WARN L230 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_ee550c8b-9f4b-464b-983d-253d7ce1201d/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2021-11-20 07:04:43,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:04:43,147 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:04:43,255 WARN L230 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_ee550c8b-9f4b-464b-983d-253d7ce1201d/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2021-11-20 07:04:43,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:04:43,291 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:04:43,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:43 WrapperNode [2021-11-20 07:04:43,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:04:43,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:04:43,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:04:43,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:04:43,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:43" (1/1) ... [2021-11-20 07:04:43,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:43" (1/1) ... [2021-11-20 07:04:43,389 INFO L137 Inliner]: procedures = 22, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 198 [2021-11-20 07:04:43,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:04:43,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:04:43,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:04:43,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:04:43,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:43" (1/1) ... [2021-11-20 07:04:43,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:43" (1/1) ... [2021-11-20 07:04:43,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:43" (1/1) ... [2021-11-20 07:04:43,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:43" (1/1) ... [2021-11-20 07:04:43,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:43" (1/1) ... [2021-11-20 07:04:43,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:43" (1/1) ... [2021-11-20 07:04:43,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:43" (1/1) ... [2021-11-20 07:04:43,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:04:43,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:04:43,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:04:43,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:04:43,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:43" (1/1) ... [2021-11-20 07:04:43,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:04:43,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:04:43,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:04:43,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:04:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:04:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-11-20 07:04:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 07:04:43,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:04:43,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-20 07:04:43,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 07:04:43,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:04:43,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:04:43,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-20 07:04:43,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 07:04:43,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:04:43,757 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:04:43,759 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:04:53,329 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:04:53,337 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:04:53,337 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-20 07:04:53,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:04:53 BoogieIcfgContainer [2021-11-20 07:04:53,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:04:53,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:04:53,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:04:53,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:04:53,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:04:42" (1/3) ... [2021-11-20 07:04:53,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a7fe94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:04:53, skipping insertion in model container [2021-11-20 07:04:53,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:43" (2/3) ... [2021-11-20 07:04:53,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a7fe94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:04:53, skipping insertion in model container [2021-11-20 07:04:53,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:04:53" (3/3) ... [2021-11-20 07:04:53,350 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2021-11-20 07:04:53,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:04:53,357 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:04:53,417 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:04:53,426 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=PETRI_NET, 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 [2021-11-20 07:04:53,426 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:04:53,444 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 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) [2021-11-20 07:04:53,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 07:04:53,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:04:53,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:04:53,452 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:04:53,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:04:53,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1030429181, now seen corresponding path program 1 times [2021-11-20 07:04:53,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:04:53,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474806949] [2021-11-20 07:04:53,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:04:53,481 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:04:53,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:04:53,491 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:04:53,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 07:04:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:04:54,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 07:04:54,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:04:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:04:54,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:04:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:04:54,838 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:04:54,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474806949] [2021-11-20 07:04:54,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474806949] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:04:54,840 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:04:54,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 07:04:54,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285720920] [2021-11-20 07:04:54,843 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:04:54,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:04:54,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:04:54,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:04:54,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:04:54,899 INFO L87 Difference]: Start difference. First operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 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) [2021-11-20 07:04:54,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:04:54,937 INFO L93 Difference]: Finished difference Result 72 states and 112 transitions. [2021-11-20 07:04:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:04:54,940 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 [2021-11-20 07:04:54,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:04:54,954 INFO L225 Difference]: With dead ends: 72 [2021-11-20 07:04:54,954 INFO L226 Difference]: Without dead ends: 34 [2021-11-20 07:04:54,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:04:54,966 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:04:54,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:04:54,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-20 07:04:55,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-20 07:04:55,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 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) [2021-11-20 07:04:55,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2021-11-20 07:04:55,010 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 10 [2021-11-20 07:04:55,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:04:55,011 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2021-11-20 07:04:55,012 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) [2021-11-20 07:04:55,012 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2021-11-20 07:04:55,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 07:04:55,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:04:55,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:04:55,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-20 07:04:55,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:04:55,228 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:04:55,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:04:55,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1304878016, now seen corresponding path program 1 times [2021-11-20 07:04:55,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:04:55,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266148389] [2021-11-20 07:04:55,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:04:55,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:04:55,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:04:55,232 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:04:55,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 07:04:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:04:56,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:04:56,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:04:56,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:04:56,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:04:57,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:04:57,164 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:04:57,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266148389] [2021-11-20 07:04:57,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266148389] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:04:57,165 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:04:57,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-20 07:04:57,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474762238] [2021-11-20 07:04:57,166 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:04:57,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:04:57,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:04:57,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:04:57,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:04:57,170 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-11-20 07:04:58,817 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:00,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:02,939 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:02,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:05:02,944 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2021-11-20 07:05:02,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:05:02,990 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 [2021-11-20 07:05:02,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:05:02,992 INFO L225 Difference]: With dead ends: 56 [2021-11-20 07:05:02,992 INFO L226 Difference]: Without dead ends: 45 [2021-11-20 07:05:02,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:05:02,994 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 28 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:05:02,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 162 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 1 Unknown, 27 Unchecked, 5.6s Time] [2021-11-20 07:05:02,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-20 07:05:03,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32. [2021-11-20 07:05:03,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 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) [2021-11-20 07:05:03,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-11-20 07:05:03,003 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 11 [2021-11-20 07:05:03,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:05:03,004 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-11-20 07:05:03,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-11-20 07:05:03,004 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-11-20 07:05:03,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 07:05:03,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:05:03,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:05:03,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-20 07:05:03,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:05:03,218 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:05:03,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:05:03,218 INFO L85 PathProgramCache]: Analyzing trace with hash -413875709, now seen corresponding path program 1 times [2021-11-20 07:05:03,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:05:03,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140951257] [2021-11-20 07:05:03,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:05:03,222 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:05:03,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:05:03,223 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:05:03,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 07:05:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:04,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 07:05:04,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:05:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:05:04,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:05:04,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:05:04,813 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:05:04,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140951257] [2021-11-20 07:05:04,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140951257] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:05:04,813 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:05:04,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-20 07:05:04,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622634984] [2021-11-20 07:05:04,814 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:05:04,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:05:04,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:05:04,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:05:04,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:05:04,815 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2021-11-20 07:05:07,590 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:09,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:11,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:13,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:15,879 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:18,967 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:20,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:22,522 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:24,020 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:26,221 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:28,226 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:28,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:05:28,283 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2021-11-20 07:05:28,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:05:28,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 13 [2021-11-20 07:05:28,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:05:28,284 INFO L225 Difference]: With dead ends: 45 [2021-11-20 07:05:28,285 INFO L226 Difference]: Without dead ends: 42 [2021-11-20 07:05:28,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:05:28,287 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 33 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:05:28,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 154 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 9 Unknown, 0 Unchecked, 23.3s Time] [2021-11-20 07:05:28,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-20 07:05:28,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2021-11-20 07:05:28,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 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) [2021-11-20 07:05:28,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2021-11-20 07:05:28,295 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 13 [2021-11-20 07:05:28,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:05:28,296 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2021-11-20 07:05:28,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2021-11-20 07:05:28,296 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2021-11-20 07:05:28,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 07:05:28,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:05:28,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:05:28,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:05:28,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:05:28,498 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:05:28,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:05:28,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1612074501, now seen corresponding path program 1 times [2021-11-20 07:05:28,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:05:28,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21100918] [2021-11-20 07:05:28,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:05:28,500 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:05:28,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:05:28,501 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:05:28,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 07:05:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:30,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:05:30,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:05:30,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:05:30,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:05:31,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:05:31,232 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:05:31,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21100918] [2021-11-20 07:05:31,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21100918] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:05:31,232 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:05:31,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-20 07:05:31,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78340115] [2021-11-20 07:05:31,233 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:05:31,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:05:31,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:05:31,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:05:31,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:05:31,235 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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) [2021-11-20 07:05:33,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:36,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:37,594 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:39,780 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:41,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:45,013 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:47,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:47,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:05:47,017 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2021-11-20 07:05:47,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:05:47,065 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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 15 [2021-11-20 07:05:47,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:05:47,066 INFO L225 Difference]: With dead ends: 48 [2021-11-20 07:05:47,067 INFO L226 Difference]: Without dead ends: 34 [2021-11-20 07:05:47,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:05:47,069 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 5 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:05:47,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 130 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 6 Unknown, 14 Unchecked, 15.6s Time] [2021-11-20 07:05:47,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-20 07:05:47,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-20 07:05:47,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 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) [2021-11-20 07:05:47,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2021-11-20 07:05:47,076 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 15 [2021-11-20 07:05:47,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:05:47,076 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2021-11-20 07:05:47,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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) [2021-11-20 07:05:47,076 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2021-11-20 07:05:47,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 07:05:47,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:05:47,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:05:47,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:05:47,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:05:47,278 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:05:47,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:05:47,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1848532469, now seen corresponding path program 1 times [2021-11-20 07:05:47,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:05:47,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769226674] [2021-11-20 07:05:47,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:05:47,279 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:05:47,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:05:47,281 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:05:47,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 07:05:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:49,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 07:05:49,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:05:50,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:05:50,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:05:52,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:05:52,382 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:05:52,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769226674] [2021-11-20 07:05:52,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769226674] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:05:52,382 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:05:52,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 07:05:52,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034313579] [2021-11-20 07:05:52,383 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:05:52,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:05:52,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:05:52,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:05:52,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:05:52,385 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-11-20 07:05:54,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:56,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:57,896 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:00,051 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:02,217 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:04,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:06,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:08,630 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:10,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:12,840 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:14,267 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:15,855 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:15,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:06:15,898 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2021-11-20 07:06:15,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:06:15,917 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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 [2021-11-20 07:06:15,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:06:15,918 INFO L225 Difference]: With dead ends: 55 [2021-11-20 07:06:15,918 INFO L226 Difference]: Without dead ends: 41 [2021-11-20 07:06:15,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:06:15,920 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 56 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:06:15,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 68 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 8 Unknown, 0 Unchecked, 23.5s Time] [2021-11-20 07:06:15,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-20 07:06:15,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2021-11-20 07:06:15,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 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) [2021-11-20 07:06:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2021-11-20 07:06:15,930 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 16 [2021-11-20 07:06:15,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:06:15,930 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2021-11-20 07:06:15,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-11-20 07:06:15,931 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2021-11-20 07:06:15,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 07:06:15,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:06:15,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:06:15,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:06:16,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:06:16,133 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:06:16,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:06:16,134 INFO L85 PathProgramCache]: Analyzing trace with hash 712330328, now seen corresponding path program 1 times [2021-11-20 07:06:16,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:06:16,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654620283] [2021-11-20 07:06:16,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:06:16,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:06:16,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:06:16,135 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:06:16,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 07:06:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:06:17,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 07:06:17,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:06:17,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:06:17,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:06:19,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:06:19,390 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:06:19,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654620283] [2021-11-20 07:06:19,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654620283] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:06:19,391 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:06:19,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2021-11-20 07:06:19,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423420367] [2021-11-20 07:06:19,391 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:06:19,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:06:19,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:06:19,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:06:19,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:06:19,393 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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) [2021-11-20 07:06:22,606 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:22,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:06:22,794 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2021-11-20 07:06:22,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:06:22,795 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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 17 [2021-11-20 07:06:22,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:06:22,796 INFO L225 Difference]: With dead ends: 40 [2021-11-20 07:06:22,796 INFO L226 Difference]: Without dead ends: 29 [2021-11-20 07:06:22,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-11-20 07:06:22,798 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 44 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:06:22,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 342 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 55 Invalid, 1 Unknown, 27 Unchecked, 2.7s Time] [2021-11-20 07:06:22,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-20 07:06:22,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-20 07:06:22,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 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) [2021-11-20 07:06:22,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2021-11-20 07:06:22,805 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 17 [2021-11-20 07:06:22,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:06:22,805 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2021-11-20 07:06:22,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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) [2021-11-20 07:06:22,806 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-11-20 07:06:22,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 07:06:22,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:06:22,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:06:22,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-20 07:06:23,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:06:23,035 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:06:23,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:06:23,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1278549058, now seen corresponding path program 1 times [2021-11-20 07:06:23,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:06:23,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057558352] [2021-11-20 07:06:23,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:06:23,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:06:23,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:06:23,038 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:06:23,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 07:06:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:06:25,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:06:25,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:06:25,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:06:25,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:06:26,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:06:26,313 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:06:26,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057558352] [2021-11-20 07:06:26,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057558352] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:06:26,314 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:06:26,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-20 07:06:26,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445841003] [2021-11-20 07:06:26,314 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:06:26,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:06:26,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:06:26,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:06:26,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:06:26,315 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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) [2021-11-20 07:06:26,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:06:26,536 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2021-11-20 07:06:26,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:06:26,537 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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 21 [2021-11-20 07:06:26,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:06:26,537 INFO L225 Difference]: With dead ends: 29 [2021-11-20 07:06:26,537 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 07:06:26,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:06:26,539 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:06:26,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 8 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 1 Unchecked, 0.0s Time] [2021-11-20 07:06:26,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 07:06:26,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 07:06:26,541 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) [2021-11-20 07:06:26,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 07:06:26,541 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-11-20 07:06:26,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:06:26,541 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:06:26,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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) [2021-11-20 07:06:26,542 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 07:06:26,542 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 07:06:26,545 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 07:06:26,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 07:06:26,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:06:26,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 07:06:27,119 INFO L858 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-11-20 07:06:27,120 INFO L858 garLoopResultBuilder]: For program point L143-2(lines 143 146) no Hoare annotation was computed. [2021-11-20 07:06:27,120 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 07:06:27,120 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-20 07:06:27,120 INFO L854 garLoopResultBuilder]: At program point L28(lines 16 29) the Hoare annotation is: false [2021-11-20 07:06:27,120 INFO L858 garLoopResultBuilder]: For program point L144(line 144) no Hoare annotation was computed. [2021-11-20 07:06:27,120 INFO L858 garLoopResultBuilder]: For program point L111(lines 111 116) no Hoare annotation was computed. [2021-11-20 07:06:27,120 INFO L854 garLoopResultBuilder]: At program point L128(lines 119 129) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 (fp ((_ extract 31 31) |ULTIMATE.start___signbit_float_~w~1#1|) ((_ extract 30 23) |ULTIMATE.start___signbit_float_~w~1#1|) ((_ extract 22 0) |ULTIMATE.start___signbit_float_~w~1#1|))) |ULTIMATE.start_main_#t~short29#1| (= |ULTIMATE.start___signbit_float_#res#1| (_ bv1 32)) (= |ULTIMATE.start_atan_float_#res#1| .cse0) (= .cse0 |ULTIMATE.start___signbit_float_~x#1|) (= |ULTIMATE.start_main_~res~0#1| .cse0) (= .cse0 |ULTIMATE.start_atan_float_~x#1|))) [2021-11-20 07:06:27,121 INFO L858 garLoopResultBuilder]: For program point L122-1(lines 122 126) no Hoare annotation was computed. [2021-11-20 07:06:27,121 INFO L854 garLoopResultBuilder]: At program point L122-2(lines 122 126) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and |ULTIMATE.start_main_#t~short29#1| (= |ULTIMATE.start_atan_float_#res#1| .cse0) (= .cse0 |ULTIMATE.start___signbit_float_~x#1|) (= |ULTIMATE.start_main_~res~0#1| .cse0) (= .cse0 |ULTIMATE.start_atan_float_~x#1|))) [2021-11-20 07:06:27,121 INFO L858 garLoopResultBuilder]: For program point L23(lines 23 27) no Hoare annotation was computed. [2021-11-20 07:06:27,121 INFO L858 garLoopResultBuilder]: For program point L122-3(lines 122 126) no Hoare annotation was computed. [2021-11-20 07:06:27,121 INFO L858 garLoopResultBuilder]: For program point L23-1(lines 16 29) no Hoare annotation was computed. [2021-11-20 07:06:27,121 INFO L858 garLoopResultBuilder]: For program point L23-2(lines 23 27) no Hoare annotation was computed. [2021-11-20 07:06:27,121 INFO L858 garLoopResultBuilder]: For program point L81(lines 81 97) no Hoare annotation was computed. [2021-11-20 07:06:27,121 INFO L858 garLoopResultBuilder]: For program point L73(lines 73 98) no Hoare annotation was computed. [2021-11-20 07:06:27,121 INFO L858 garLoopResultBuilder]: For program point L65(lines 65 72) no Hoare annotation was computed. [2021-11-20 07:06:27,121 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-20 07:06:27,121 INFO L858 garLoopResultBuilder]: For program point L90(lines 90 96) no Hoare annotation was computed. [2021-11-20 07:06:27,122 INFO L858 garLoopResultBuilder]: For program point L90-2(lines 73 98) no Hoare annotation was computed. [2021-11-20 07:06:27,122 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 144) no Hoare annotation was computed. [2021-11-20 07:06:27,122 INFO L861 garLoopResultBuilder]: At program point L148(lines 131 149) the Hoare annotation is: true [2021-11-20 07:06:27,122 INFO L858 garLoopResultBuilder]: For program point L115(line 115) no Hoare annotation was computed. [2021-11-20 07:06:27,122 INFO L858 garLoopResultBuilder]: For program point L82(lines 82 88) no Hoare annotation was computed. [2021-11-20 07:06:27,122 INFO L858 garLoopResultBuilder]: For program point L115-2(line 115) no Hoare annotation was computed. [2021-11-20 07:06:27,122 INFO L854 garLoopResultBuilder]: At program point L115-3(lines 55 117) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= |ULTIMATE.start_atan_float_#res#1| .cse0) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= currentRoundingMode roundNearestTiesToEven) (= .cse0 |ULTIMATE.start_atan_float_~x#1|))) [2021-11-20 07:06:27,122 INFO L858 garLoopResultBuilder]: For program point L74(lines 74 77) no Hoare annotation was computed. [2021-11-20 07:06:27,122 INFO L858 garLoopResultBuilder]: For program point L74-2(lines 74 77) no Hoare annotation was computed. [2021-11-20 07:06:27,123 INFO L858 garLoopResultBuilder]: For program point L66(lines 66 67) no Hoare annotation was computed. [2021-11-20 07:06:27,123 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 07:06:27,123 INFO L858 garLoopResultBuilder]: For program point L75(lines 75 76) no Hoare annotation was computed. [2021-11-20 07:06:27,123 INFO L858 garLoopResultBuilder]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2021-11-20 07:06:27,123 INFO L854 garLoopResultBuilder]: At program point L59-2(lines 59 63) the Hoare annotation is: (and (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= currentRoundingMode roundNearestTiesToEven) (= (fp.neg (_ +zero 8 24)) |ULTIMATE.start_atan_float_~x#1|)) [2021-11-20 07:06:27,123 INFO L858 garLoopResultBuilder]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2021-11-20 07:06:27,123 INFO L858 garLoopResultBuilder]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2021-11-20 07:06:27,123 INFO L854 garLoopResultBuilder]: At program point L18-2(lines 18 22) the Hoare annotation is: false [2021-11-20 07:06:27,123 INFO L858 garLoopResultBuilder]: For program point L68(lines 68 71) no Hoare annotation was computed. [2021-11-20 07:06:27,127 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:06:27,128 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 07:06:27,146 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 07:06:27,148 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 07:06:27,149 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 07:06:27,150 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 07:06:27,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:06:27 BoogieIcfgContainer [2021-11-20 07:06:27,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 07:06:27,152 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:06:27,152 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:06:27,153 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:06:27,153 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:04:53" (3/4) ... [2021-11-20 07:06:27,157 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 07:06:27,172 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-11-20 07:06:27,173 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-20 07:06:27,173 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 07:06:27,174 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 07:06:27,200 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x [2021-11-20 07:06:27,201 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((aux-res == -0.0f && __signbit_float(res) == 1-aux && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x [2021-11-20 07:06:27,201 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == 1bv32) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x [2021-11-20 07:06:27,226 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 07:06:27,226 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:06:27,227 INFO L158 Benchmark]: Toolchain (without parser) took 104443.48ms. Allocated memory was 60.8MB in the beginning and 86.0MB in the end (delta: 25.2MB). Free memory was 38.6MB in the beginning and 47.5MB in the end (delta: -8.9MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2021-11-20 07:06:27,227 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 60.8MB. Free memory was 41.0MB in the beginning and 40.9MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:06:27,227 INFO L158 Benchmark]: CACSL2BoogieTranslator took 507.33ms. Allocated memory is still 60.8MB. Free memory was 38.3MB in the beginning and 40.5MB in the end (delta: -2.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 07:06:27,228 INFO L158 Benchmark]: Boogie Procedure Inliner took 98.62ms. Allocated memory is still 60.8MB. Free memory was 40.5MB in the beginning and 37.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 07:06:27,228 INFO L158 Benchmark]: Boogie Preprocessor took 105.69ms. Allocated memory is still 60.8MB. Free memory was 37.9MB in the beginning and 35.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:06:27,228 INFO L158 Benchmark]: RCFGBuilder took 9840.21ms. Allocated memory is still 60.8MB. Free memory was 35.8MB in the beginning and 35.0MB in the end (delta: 806.2kB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2021-11-20 07:06:27,229 INFO L158 Benchmark]: TraceAbstraction took 93809.88ms. Allocated memory was 60.8MB in the beginning and 86.0MB in the end (delta: 25.2MB). Free memory was 34.5MB in the beginning and 52.9MB in the end (delta: -18.4MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2021-11-20 07:06:27,229 INFO L158 Benchmark]: Witness Printer took 73.75ms. Allocated memory is still 86.0MB. Free memory was 52.9MB in the beginning and 47.5MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 07:06:27,231 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 60.8MB. Free memory was 41.0MB in the beginning and 40.9MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 507.33ms. Allocated memory is still 60.8MB. Free memory was 38.3MB in the beginning and 40.5MB in the end (delta: -2.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 98.62ms. Allocated memory is still 60.8MB. Free memory was 40.5MB in the beginning and 37.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 105.69ms. Allocated memory is still 60.8MB. Free memory was 37.9MB in the beginning and 35.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 9840.21ms. Allocated memory is still 60.8MB. Free memory was 35.8MB in the beginning and 35.0MB in the end (delta: 806.2kB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * TraceAbstraction took 93809.88ms. Allocated memory was 60.8MB in the beginning and 86.0MB in the end (delta: 25.2MB). Free memory was 34.5MB in the beginning and 52.9MB in the end (delta: -18.4MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. * Witness Printer took 73.75ms. Allocated memory is still 86.0MB. Free memory was 52.9MB in the beginning and 47.5MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 144]: 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, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 93.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 72.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 25 mSolverCounterUnknown, 171 SdHoareTripleChecker+Valid, 70.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 171 mSDsluCounter, 912 SdHoareTripleChecker+Invalid, 69.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 69 IncrementalHoareTripleChecker+Unchecked, 701 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 145 IncrementalHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 211 mSDtfsCounter, 145 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 206 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 29 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 12 NumberOfFragments, 100 HoareAnnotationTreeSize, 7 FomulaSimplifications, 92 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 9.3s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 192 ConstructedInterpolants, 19 QuantifiedInterpolants, 924 SizeOfPredicates, 40 NumberOfNonLiveVariables, 699 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: (((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == 1bv32) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 59]: Loop Invariant [2021-11-20 07:06:27,241 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 07:06:27,242 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x - InvariantResult [Line: 122]: Loop Invariant Derived loop invariant: (((aux-res == -0.0f && __signbit_float(res) == 1-aux && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x - InvariantResult [Line: 55]: Loop Invariant [2021-11-20 07:06:27,243 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 07:06:27,244 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (((huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x RESULT: Ultimate proved your program to be correct! [2021-11-20 07:06:27,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee550c8b-9f4b-464b-983d-253d7ce1201d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE