./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 635b3a6bb693049216965e64098ae1bc2a282d094f3ff6d9621a11efee2ca89f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:01:48,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:01:48,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:01:48,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:01:48,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:01:48,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:01:48,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:01:48,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:01:48,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:01:48,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:01:48,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:01:48,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:01:48,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:01:48,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:01:48,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:01:48,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:01:48,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:01:48,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:01:48,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:01:48,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:01:48,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:01:48,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:01:48,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:01:48,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:01:48,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:01:48,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:01:48,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:01:48,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:01:48,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:01:48,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:01:48,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:01:48,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:01:48,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:01:48,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:01:48,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:01:48,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:01:48,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:01:48,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:01:48,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:01:48,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:01:48,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:01:48,762 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:01:48,795 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:01:48,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:01:48,796 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:01:48,806 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:01:48,807 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:01:48,807 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:01:48,808 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:01:48,808 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:01:48,808 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:01:48,808 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:01:48,809 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:01:48,809 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:01:48,809 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:01:48,809 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:01:48,810 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:01:48,810 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:01:48,810 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:01:48,810 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:01:48,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:01:48,811 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:01:48,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:01:48,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:01:48,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:01:48,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:01:48,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:01:48,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:01:48,813 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:01:48,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:01:48,813 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:01:48,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:01:48,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:01:48,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:01:48,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:01:48,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:01:48,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:01:48,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:01:48,815 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:01:48,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:01:48,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:01:48,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:01:48,816 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:01:48,816 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 635b3a6bb693049216965e64098ae1bc2a282d094f3ff6d9621a11efee2ca89f [2021-11-23 03:01:49,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:01:49,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:01:49,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:01:49,205 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:01:49,206 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:01:49,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c [2021-11-23 03:01:49,294 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/data/fa8ab94c1/fc7ea651d46d4e5986f78cc0ba3a7e93/FLAGc7372e589 [2021-11-23 03:01:49,896 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:01:49,897 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/sv-benchmarks/c/float-newlib/float_req_bl_1031.c [2021-11-23 03:01:49,905 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/data/fa8ab94c1/fc7ea651d46d4e5986f78cc0ba3a7e93/FLAGc7372e589 [2021-11-23 03:01:50,234 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/data/fa8ab94c1/fc7ea651d46d4e5986f78cc0ba3a7e93 [2021-11-23 03:01:50,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:01:50,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:01:50,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:01:50,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:01:50,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:01:50,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:01:50" (1/1) ... [2021-11-23 03:01:50,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d3c58e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:50, skipping insertion in model container [2021-11-23 03:01:50,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:01:50" (1/1) ... [2021-11-23 03:01:50,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:01:50,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:01:50,512 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_a80b7639-dc14-423c-a56d-9785cabc77a5/sv-benchmarks/c/float-newlib/float_req_bl_1031.c[1571,1584] [2021-11-23 03:01:50,516 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:01:50,526 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:01:50,553 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_a80b7639-dc14-423c-a56d-9785cabc77a5/sv-benchmarks/c/float-newlib/float_req_bl_1031.c[1571,1584] [2021-11-23 03:01:50,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:01:50,572 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:01:50,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:50 WrapperNode [2021-11-23 03:01:50,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:01:50,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:01:50,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:01:50,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:01:50,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:50" (1/1) ... [2021-11-23 03:01:50,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:50" (1/1) ... [2021-11-23 03:01:50,616 INFO L137 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2021-11-23 03:01:50,616 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:01:50,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:01:50,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:01:50,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:01:50,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:50" (1/1) ... [2021-11-23 03:01:50,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:50" (1/1) ... [2021-11-23 03:01:50,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:50" (1/1) ... [2021-11-23 03:01:50,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:50" (1/1) ... [2021-11-23 03:01:50,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:50" (1/1) ... [2021-11-23 03:01:50,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:50" (1/1) ... [2021-11-23 03:01:50,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:50" (1/1) ... [2021-11-23 03:01:50,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:01:50,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:01:50,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:01:50,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:01:50,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:50" (1/1) ... [2021-11-23 03:01:50,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:01:50,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:01:50,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:01:50,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:01:50,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:01:50,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:01:50,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:01:50,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-23 03:01:50,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:01:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-23 03:01:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:01:50,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:01:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:01:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:01:50,839 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:01:50,841 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:01:51,069 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:01:51,123 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:01:51,123 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 03:01:51,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:01:51 BoogieIcfgContainer [2021-11-23 03:01:51,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:01:51,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:01:51,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:01:51,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:01:51,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:01:50" (1/3) ... [2021-11-23 03:01:51,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152dcd79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:01:51, skipping insertion in model container [2021-11-23 03:01:51,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:50" (2/3) ... [2021-11-23 03:01:51,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152dcd79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:01:51, skipping insertion in model container [2021-11-23 03:01:51,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:01:51" (3/3) ... [2021-11-23 03:01:51,152 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1031.c [2021-11-23 03:01:51,159 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:01:51,159 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:01:51,231 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:01:51,239 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:01:51,240 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:01:51,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 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) [2021-11-23 03:01:51,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 03:01:51,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:01:51,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:01:51,265 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:01:51,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:01:51,272 INFO L85 PathProgramCache]: Analyzing trace with hash -168075325, now seen corresponding path program 1 times [2021-11-23 03:01:51,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:01:51,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217361294] [2021-11-23 03:01:51,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:01:51,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:01:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:01:51,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:01:51,471 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:01:51,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217361294] [2021-11-23 03:01:51,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217361294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:01:51,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:01:51,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:01:51,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45853432] [2021-11-23 03:01:51,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:01:51,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:01:51,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:01:51,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:01:51,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:01:51,531 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:01:51,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:01:51,564 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2021-11-23 03:01:51,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:01:51,568 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-23 03:01:51,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:01:51,578 INFO L225 Difference]: With dead ends: 31 [2021-11-23 03:01:51,578 INFO L226 Difference]: Without dead ends: 14 [2021-11-23 03:01:51,582 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 [2021-11-23 03:01:51,587 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:01:51,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:01:51,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-23 03:01:51,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-23 03:01:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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) [2021-11-23 03:01:51,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-23 03:01:51,626 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2021-11-23 03:01:51,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:01:51,627 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-23 03:01:51,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:01:51,627 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-23 03:01:51,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 03:01:51,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:01:51,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:01:51,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:01:51,629 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:01:51,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:01:51,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1262718146, now seen corresponding path program 1 times [2021-11-23 03:01:51,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:01:51,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312369871] [2021-11-23 03:01:51,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:01:51,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:01:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:01:51,699 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 03:01:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:01:51,762 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 03:01:51,763 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 03:01:51,765 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:01:51,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:01:51,773 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-23 03:01:51,776 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:01:51,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:01:51 BoogieIcfgContainer [2021-11-23 03:01:51,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:01:51,806 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:01:51,806 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:01:51,806 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:01:51,807 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:01:51" (3/4) ... [2021-11-23 03:01:51,811 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 03:01:51,811 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:01:51,812 INFO L158 Benchmark]: Toolchain (without parser) took 1572.68ms. Allocated memory is still 107.0MB. Free memory was 65.6MB in the beginning and 42.7MB in the end (delta: 22.9MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2021-11-23 03:01:51,813 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 107.0MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:01:51,814 INFO L158 Benchmark]: CACSL2BoogieTranslator took 331.91ms. Allocated memory is still 107.0MB. Free memory was 65.4MB in the beginning and 82.6MB in the end (delta: -17.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 03:01:51,814 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.38ms. Allocated memory is still 107.0MB. Free memory was 82.6MB in the beginning and 81.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:01:51,815 INFO L158 Benchmark]: Boogie Preprocessor took 34.12ms. Allocated memory is still 107.0MB. Free memory was 81.1MB in the beginning and 79.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:01:51,816 INFO L158 Benchmark]: RCFGBuilder took 474.18ms. Allocated memory is still 107.0MB. Free memory was 79.6MB in the beginning and 68.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 03:01:51,817 INFO L158 Benchmark]: TraceAbstraction took 676.72ms. Allocated memory is still 107.0MB. Free memory was 67.9MB in the beginning and 43.3MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-23 03:01:51,817 INFO L158 Benchmark]: Witness Printer took 5.26ms. Allocated memory is still 107.0MB. Free memory was 43.0MB in the beginning and 42.7MB in the end (delta: 296.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:01:51,821 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 107.0MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 331.91ms. Allocated memory is still 107.0MB. Free memory was 65.4MB in the beginning and 82.6MB in the end (delta: -17.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.38ms. Allocated memory is still 107.0MB. Free memory was 82.6MB in the beginning and 81.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.12ms. Allocated memory is still 107.0MB. Free memory was 81.1MB in the beginning and 79.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 474.18ms. Allocated memory is still 107.0MB. Free memory was 79.6MB in the beginning and 68.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 676.72ms. Allocated memory is still 107.0MB. Free memory was 67.9MB in the beginning and 43.3MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 5.26ms. Allocated memory is still 107.0MB. Free memory was 43.0MB in the beginning and 42.7MB in the end (delta: 296.1kB). 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: 72]: 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 57, overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 24. Possible FailurePath: [L67] float x = 0.0f / 0.0f; [L68] CALL, EXPR round_float(x) [L14] __uint32_t w; [L16] int exponent_less_127; VAL [\old(x)=2139095042, x=2139095042] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (w) = gf_u.word [L24] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=2139095042, exponent_less_127=128, w=2139095041, x=2139095042] [L26] COND FALSE !(exponent_less_127 < 23) [L42] COND TRUE exponent_less_127 == 128 [L44] return x + x; VAL [\old(x)=2139095042, \result=2139095042, exponent_less_127=128, w=2139095041, x=2139095042] [L68] RET, EXPR round_float(x) [L68] float res = round_float(x); [L71] CALL, EXPR isnan_float(res) [L57] return x != x; [L71] RET, EXPR isnan_float(res) [L71] COND TRUE !isnan_float(res) [L72] reach_error() VAL [res=2139095042, x=2139095042] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 13 mSDtfsCounter, 5 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=16occurred 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-23 03:01:51,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/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 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_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 635b3a6bb693049216965e64098ae1bc2a282d094f3ff6d9621a11efee2ca89f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:01:54,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:01:54,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:01:55,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:01:55,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:01:55,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:01:55,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:01:55,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:01:55,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:01:55,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:01:55,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:01:55,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:01:55,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:01:55,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:01:55,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:01:55,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:01:55,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:01:55,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:01:55,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:01:55,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:01:55,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:01:55,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:01:55,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:01:55,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:01:55,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:01:55,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:01:55,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:01:55,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:01:55,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:01:55,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:01:55,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:01:55,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:01:55,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:01:55,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:01:55,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:01:55,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:01:55,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:01:55,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:01:55,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:01:55,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:01:55,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:01:55,153 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 03:01:55,205 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:01:55,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:01:55,206 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:01:55,206 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:01:55,207 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:01:55,207 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:01:55,207 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:01:55,208 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:01:55,208 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:01:55,208 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:01:55,208 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:01:55,209 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:01:55,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:01:55,210 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:01:55,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:01:55,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:01:55,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:01:55,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:01:55,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:01:55,211 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:01:55,212 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 03:01:55,212 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 03:01:55,212 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:01:55,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:01:55,213 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:01:55,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:01:55,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:01:55,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 03:01:55,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:01:55,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:01:55,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:01:55,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:01:55,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:01:55,215 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 03:01:55,215 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 03:01:55,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:01:55,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:01:55,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:01:55,216 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_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 635b3a6bb693049216965e64098ae1bc2a282d094f3ff6d9621a11efee2ca89f [2021-11-23 03:01:55,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:01:55,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:01:55,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:01:55,709 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:01:55,712 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:01:55,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c [2021-11-23 03:01:55,802 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/data/f379bf963/9907481dfc42427fb875ab1525a214fc/FLAG13a700245 [2021-11-23 03:01:56,478 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:01:56,479 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/sv-benchmarks/c/float-newlib/float_req_bl_1031.c [2021-11-23 03:01:56,490 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/data/f379bf963/9907481dfc42427fb875ab1525a214fc/FLAG13a700245 [2021-11-23 03:01:56,823 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/data/f379bf963/9907481dfc42427fb875ab1525a214fc [2021-11-23 03:01:56,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:01:56,827 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:01:56,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:01:56,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:01:56,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:01:56,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:01:56" (1/1) ... [2021-11-23 03:01:56,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cda7d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:56, skipping insertion in model container [2021-11-23 03:01:56,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:01:56" (1/1) ... [2021-11-23 03:01:56,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:01:56,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:01:57,052 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_a80b7639-dc14-423c-a56d-9785cabc77a5/sv-benchmarks/c/float-newlib/float_req_bl_1031.c[1571,1584] [2021-11-23 03:01:57,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:01:57,067 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:01:57,095 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_a80b7639-dc14-423c-a56d-9785cabc77a5/sv-benchmarks/c/float-newlib/float_req_bl_1031.c[1571,1584] [2021-11-23 03:01:57,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:01:57,122 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:01:57,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:57 WrapperNode [2021-11-23 03:01:57,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:01:57,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:01:57,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:01:57,125 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:01:57,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:57" (1/1) ... [2021-11-23 03:01:57,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:57" (1/1) ... [2021-11-23 03:01:57,187 INFO L137 Inliner]: procedures = 19, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2021-11-23 03:01:57,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:01:57,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:01:57,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:01:57,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:01:57,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:57" (1/1) ... [2021-11-23 03:01:57,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:57" (1/1) ... [2021-11-23 03:01:57,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:57" (1/1) ... [2021-11-23 03:01:57,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:57" (1/1) ... [2021-11-23 03:01:57,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:57" (1/1) ... [2021-11-23 03:01:57,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:57" (1/1) ... [2021-11-23 03:01:57,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:57" (1/1) ... [2021-11-23 03:01:57,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:01:57,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:01:57,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:01:57,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:01:57,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:57" (1/1) ... [2021-11-23 03:01:57,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:01:57,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:01:57,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:01:57,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:01:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:01:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 03:01:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:01:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-23 03:01:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 03:01:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:01:57,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:01:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-23 03:01:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 03:01:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:01:57,408 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:01:57,410 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:01:57,722 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:01:57,729 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:01:57,729 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 03:01:57,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:01:57 BoogieIcfgContainer [2021-11-23 03:01:57,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:01:57,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:01:57,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:01:57,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:01:57,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:01:56" (1/3) ... [2021-11-23 03:01:57,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e18048d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:01:57, skipping insertion in model container [2021-11-23 03:01:57,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:57" (2/3) ... [2021-11-23 03:01:57,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e18048d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:01:57, skipping insertion in model container [2021-11-23 03:01:57,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:01:57" (3/3) ... [2021-11-23 03:01:57,754 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1031.c [2021-11-23 03:01:57,759 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:01:57,760 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:01:57,811 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:01:57,819 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:01:57,820 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:01:57,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 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) [2021-11-23 03:01:57,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 03:01:57,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:01:57,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:01:57,903 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:01:57,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:01:57,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1590434411, now seen corresponding path program 1 times [2021-11-23 03:01:57,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:01:57,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325709829] [2021-11-23 03:01:57,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:01:57,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:01:57,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:01:57,929 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:01:57,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 03:01:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:01:58,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 03:01:58,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:01:58,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:01:58,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:01:58,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:01:58,149 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:01:58,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325709829] [2021-11-23 03:01:58,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325709829] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:01:58,152 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:01:58,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 03:01:58,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324761850] [2021-11-23 03:01:58,156 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:01:58,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:01:58,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:01:58,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:01:58,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:01:58,204 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 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) 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) [2021-11-23 03:01:58,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:01:58,223 INFO L93 Difference]: Finished difference Result 40 states and 58 transitions. [2021-11-23 03:01:58,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:01:58,225 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 [2021-11-23 03:01:58,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:01:58,234 INFO L225 Difference]: With dead ends: 40 [2021-11-23 03:01:58,234 INFO L226 Difference]: Without dead ends: 18 [2021-11-23 03:01:58,238 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 [2021-11-23 03:01:58,244 INFO L933 BasicCegarLoop]: 25 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, 25 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 [2021-11-23 03:01:58,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:01:58,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-23 03:01:58,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-23 03:01:58,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 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) [2021-11-23 03:01:58,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-11-23 03:01:58,292 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2021-11-23 03:01:58,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:01:58,292 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-11-23 03:01:58,293 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) [2021-11-23 03:01:58,293 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2021-11-23 03:01:58,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 03:01:58,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:01:58,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:01:58,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:01:58,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:01:58,509 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:01:58,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:01:58,511 INFO L85 PathProgramCache]: Analyzing trace with hash -744872786, now seen corresponding path program 1 times [2021-11-23 03:01:58,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:01:58,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003256211] [2021-11-23 03:01:58,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:01:58,512 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:01:58,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:01:58,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:01:58,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 03:01:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:01:58,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 03:01:58,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:01:58,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:01:58,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:02:00,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:02:00,079 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:02:00,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003256211] [2021-11-23 03:02:00,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003256211] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:02:00,080 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:02:00,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-23 03:02:00,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877888727] [2021-11-23 03:02:00,080 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:02:00,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:02:00,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:02:00,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:02:00,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:02:00,084 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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) [2021-11-23 03:02:00,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:02:00,365 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-11-23 03:02:00,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:02:00,366 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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 [2021-11-23 03:02:00,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:02:00,367 INFO L225 Difference]: With dead ends: 23 [2021-11-23 03:02:00,368 INFO L226 Difference]: Without dead ends: 17 [2021-11-23 03:02:00,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:02:00,371 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 49 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:02:00,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 78 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:02:00,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-23 03:02:00,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-23 03:02:00,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 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) [2021-11-23 03:02:00,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-11-23 03:02:00,377 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 11 [2021-11-23 03:02:00,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:02:00,378 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-11-23 03:02:00,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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) [2021-11-23 03:02:00,378 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-11-23 03:02:00,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:02:00,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:02:00,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:02:00,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-23 03:02:00,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:02:00,595 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:02:00,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:02:00,597 INFO L85 PathProgramCache]: Analyzing trace with hash 812423977, now seen corresponding path program 1 times [2021-11-23 03:02:00,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:02:00,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064136203] [2021-11-23 03:02:00,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:02:00,599 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:02:00,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:02:00,603 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:02:00,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 03:02:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:02:00,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 03:02:00,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:02:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:02:00,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:02:01,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:02:01,155 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:02:01,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064136203] [2021-11-23 03:02:01,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064136203] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:02:01,155 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:02:01,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 03:02:01,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154947502] [2021-11-23 03:02:01,156 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:02:01,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:02:01,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:02:01,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:02:01,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:02:01,158 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-11-23 03:02:01,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:02:01,187 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-11-23 03:02:01,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:02:01,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 [2021-11-23 03:02:01,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:02:01,189 INFO L225 Difference]: With dead ends: 17 [2021-11-23 03:02:01,189 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 03:02:01,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:02:01,191 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:02:01,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 2 Unchecked, 0.0s Time] [2021-11-23 03:02:01,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 03:02:01,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 03:02:01,194 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) [2021-11-23 03:02:01,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 03:02:01,194 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-11-23 03:02:01,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:02:01,194 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 03:02:01,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-11-23 03:02:01,195 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 03:02:01,195 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 03:02:01,198 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:02:01,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:02:01,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:02:01,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 03:02:01,480 INFO L858 garLoopResultBuilder]: For program point L27(lines 27 40) no Hoare annotation was computed. [2021-11-23 03:02:01,480 INFO L858 garLoopResultBuilder]: For program point L48(lines 48 52) no Hoare annotation was computed. [2021-11-23 03:02:01,480 INFO L858 garLoopResultBuilder]: For program point L48-1(lines 13 54) no Hoare annotation was computed. [2021-11-23 03:02:01,481 INFO L858 garLoopResultBuilder]: For program point L48-2(lines 48 52) no Hoare annotation was computed. [2021-11-23 03:02:01,481 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-23 03:02:01,481 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 03:02:01,481 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-23 03:02:01,481 INFO L854 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (and (= |ULTIMATE.start_round_float_#res#1| (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0))) (= |ULTIMATE.start_round_float_~x#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|)) [2021-11-23 03:02:01,482 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2021-11-23 03:02:01,482 INFO L854 garLoopResultBuilder]: At program point L53(lines 13 54) the Hoare annotation is: (and (= |ULTIMATE.start_round_float_#res#1| (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0))) (= |ULTIMATE.start_round_float_~x#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-23 03:02:01,482 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 03:02:01,482 INFO L858 garLoopResultBuilder]: For program point L29(lines 29 31) no Hoare annotation was computed. [2021-11-23 03:02:01,482 INFO L858 garLoopResultBuilder]: For program point L42(lines 42 46) no Hoare annotation was computed. [2021-11-23 03:02:01,482 INFO L858 garLoopResultBuilder]: For program point L71(lines 71 74) no Hoare annotation was computed. [2021-11-23 03:02:01,483 INFO L858 garLoopResultBuilder]: For program point L34(lines 34 36) no Hoare annotation was computed. [2021-11-23 03:02:01,483 INFO L858 garLoopResultBuilder]: For program point L26(lines 26 47) no Hoare annotation was computed. [2021-11-23 03:02:01,483 INFO L858 garLoopResultBuilder]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2021-11-23 03:02:01,483 INFO L854 garLoopResultBuilder]: At program point L18-2(lines 18 22) the Hoare annotation is: (and (= |ULTIMATE.start_round_float_~x#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-23 03:02:01,483 INFO L858 garLoopResultBuilder]: For program point L18-3(lines 18 22) no Hoare annotation was computed. [2021-11-23 03:02:01,483 INFO L861 garLoopResultBuilder]: At program point L76(lines 59 77) the Hoare annotation is: true [2021-11-23 03:02:01,484 INFO L858 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2021-11-23 03:02:01,487 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-23 03:02:01,489 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:02:01,500 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,505 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,507 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,507 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,507 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,508 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,508 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,509 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,509 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,509 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,510 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,510 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,511 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,511 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,512 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,512 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,512 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,512 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:02:01 BoogieIcfgContainer [2021-11-23 03:02:01,514 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:02:01,515 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:02:01,515 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:02:01,515 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:02:01,516 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:01:57" (3/4) ... [2021-11-23 03:02:01,519 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 03:02:01,533 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-11-23 03:02:01,533 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-23 03:02:01,534 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 03:02:01,534 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 03:02:01,564 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-11-23 03:02:01,565 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result [2021-11-23 03:02:01,581 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 03:02:01,581 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:02:01,582 INFO L158 Benchmark]: Toolchain (without parser) took 4754.71ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 35.4MB in the beginning and 35.1MB in the end (delta: 291.7kB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2021-11-23 03:02:01,583 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 56.6MB. Free memory is still 37.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:02:01,583 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.86ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 35.2MB in the beginning and 55.2MB in the end (delta: -20.0MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2021-11-23 03:02:01,584 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.69ms. Allocated memory is still 71.3MB. Free memory was 55.2MB in the beginning and 53.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:02:01,585 INFO L158 Benchmark]: Boogie Preprocessor took 64.39ms. Allocated memory is still 71.3MB. Free memory was 53.5MB in the beginning and 52.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:02:01,585 INFO L158 Benchmark]: RCFGBuilder took 476.24ms. Allocated memory is still 71.3MB. Free memory was 52.1MB in the beginning and 41.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 03:02:01,586 INFO L158 Benchmark]: TraceAbstraction took 3780.45ms. Allocated memory is still 71.3MB. Free memory was 40.7MB in the beginning and 38.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2021-11-23 03:02:01,586 INFO L158 Benchmark]: Witness Printer took 66.81ms. Allocated memory is still 71.3MB. Free memory was 38.0MB in the beginning and 35.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:02:01,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 56.6MB. Free memory is still 37.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 278.86ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 35.2MB in the beginning and 55.2MB in the end (delta: -20.0MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.69ms. Allocated memory is still 71.3MB. Free memory was 55.2MB in the beginning and 53.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.39ms. Allocated memory is still 71.3MB. Free memory was 53.5MB in the beginning and 52.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 476.24ms. Allocated memory is still 71.3MB. Free memory was 52.1MB in the beginning and 41.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3780.45ms. Allocated memory is still 71.3MB. Free memory was 40.7MB in the beginning and 38.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. * Witness Printer took 66.81ms. Allocated memory is still 71.3MB. Free memory was 38.0MB in the beginning and 35.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. 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 - 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 - 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 - 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 - 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: 72]: 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, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 49 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 113 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2 IncrementalHoareTripleChecker+Unchecked, 70 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 43 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 58 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 5 QuantifiedInterpolants, 310 SizeOfPredicates, 17 NumberOfNonLiveVariables, 117 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 [2021-11-23 03:02:01,608 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,609 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 57]: Loop Invariant [2021-11-23 03:02:01,610 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,610 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,611 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,613 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,614 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,614 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,614 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,615 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result - InvariantResult [Line: 13]: Loop Invariant [2021-11-23 03:02:01,615 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,616 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,616 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,616 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,617 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,617 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,618 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 03:02:01,618 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-23 03:02:01,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80b7639-dc14-423c-a56d-9785cabc77a5/bin/utaipan-EQgc7hIp5V/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