./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1121a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1121a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P --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 a675a014adb554d3b3cb02e2742644f85bc00ae7c696ead14730bf8198b2dce7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:06:21,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:06:21,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:06:21,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:06:21,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:06:21,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:06:21,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:06:21,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:06:21,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:06:21,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:06:21,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:06:21,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:06:21,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:06:21,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:06:21,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:06:21,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:06:21,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:06:21,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:06:21,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:06:21,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:06:21,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:06:21,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:06:21,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:06:21,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:06:21,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:06:21,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:06:21,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:06:21,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:06:21,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:06:21,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:06:21,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:06:21,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:06:21,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:06:21,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:06:21,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:06:21,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:06:21,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:06:21,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:06:21,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:06:21,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:06:21,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:06:21,892 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:06:21,932 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:06:21,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:06:21,933 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:06:21,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:06:21,940 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:06:21,941 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:06:21,941 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:06:21,941 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:06:21,941 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:06:21,942 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:06:21,943 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:06:21,943 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:06:21,943 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:06:21,943 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:06:21,944 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:06:21,944 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:06:21,944 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:06:21,944 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:06:21,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:06:21,945 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:06:21,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:06:21,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:06:21,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:06:21,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:06:21,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:06:21,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:06:21,947 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:06:21,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:06:21,947 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:06:21,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:06:21,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:06:21,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:06:21,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:06:21,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:06:21,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:06:21,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:06:21,949 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:06:21,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:06:21,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:06:21,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:06:21,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:06:21,949 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_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a675a014adb554d3b3cb02e2742644f85bc00ae7c696ead14730bf8198b2dce7 [2021-11-21 00:06:22,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:06:22,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:06:22,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:06:22,257 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:06:22,258 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:06:22,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-newlib/float_req_bl_1121a.c [2021-11-21 00:06:22,323 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/data/22cdd5835/927444478364470490c8d1018a0de103/FLAG6548a151d [2021-11-21 00:06:22,721 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:06:22,721 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/sv-benchmarks/c/float-newlib/float_req_bl_1121a.c [2021-11-21 00:06:22,728 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/data/22cdd5835/927444478364470490c8d1018a0de103/FLAG6548a151d [2021-11-21 00:06:23,113 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/data/22cdd5835/927444478364470490c8d1018a0de103 [2021-11-21 00:06:23,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:06:23,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:06:23,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:06:23,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:06:23,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:06:23,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:06:23" (1/1) ... [2021-11-21 00:06:23,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fffcbbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:23, skipping insertion in model container [2021-11-21 00:06:23,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:06:23" (1/1) ... [2021-11-21 00:06:23,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:06:23,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:06:23,355 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_1dd85782-368e-41d2-9e26-61e2cf92bd77/sv-benchmarks/c/float-newlib/float_req_bl_1121a.c[2701,2714] [2021-11-21 00:06:23,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:06:23,366 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:06:23,409 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_1dd85782-368e-41d2-9e26-61e2cf92bd77/sv-benchmarks/c/float-newlib/float_req_bl_1121a.c[2701,2714] [2021-11-21 00:06:23,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:06:23,423 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:06:23,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:23 WrapperNode [2021-11-21 00:06:23,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:06:23,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:06:23,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:06:23,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:06:23,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:23" (1/1) ... [2021-11-21 00:06:23,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:23" (1/1) ... [2021-11-21 00:06:23,476 INFO L137 Inliner]: procedures = 18, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 169 [2021-11-21 00:06:23,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:06:23,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:06:23,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:06:23,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:06:23,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:23" (1/1) ... [2021-11-21 00:06:23,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:23" (1/1) ... [2021-11-21 00:06:23,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:23" (1/1) ... [2021-11-21 00:06:23,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:23" (1/1) ... [2021-11-21 00:06:23,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:23" (1/1) ... [2021-11-21 00:06:23,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:23" (1/1) ... [2021-11-21 00:06:23,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:23" (1/1) ... [2021-11-21 00:06:23,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:06:23,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:06:23,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:06:23,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:06:23,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:23" (1/1) ... [2021-11-21 00:06:23,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:06:23,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:06:23,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:06:23,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:06:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:06:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:06:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:06:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:06:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-21 00:06:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-21 00:06:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:06:23,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:06:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:06:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-21 00:06:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:06:23,687 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:06:23,688 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:06:23,908 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:06:23,969 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:06:23,969 INFO L301 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-21 00:06:23,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:06:23 BoogieIcfgContainer [2021-11-21 00:06:23,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:06:23,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:06:23,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:06:23,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:06:23,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:06:23" (1/3) ... [2021-11-21 00:06:23,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a782e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:06:23, skipping insertion in model container [2021-11-21 00:06:23,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:23" (2/3) ... [2021-11-21 00:06:23,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a782e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:06:23, skipping insertion in model container [2021-11-21 00:06:23,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:06:23" (3/3) ... [2021-11-21 00:06:23,979 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121a.c [2021-11-21 00:06:23,984 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:06:23,998 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:06:24,068 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:06:24,083 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 [2021-11-21 00:06:24,084 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:06:24,098 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.75) internal successors, (56), 33 states have internal predecessors, (56), 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) [2021-11-21 00:06:24,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 00:06:24,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:06:24,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:06:24,108 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:06:24,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:06:24,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2021166095, now seen corresponding path program 1 times [2021-11-21 00:06:24,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:06:24,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821871889] [2021-11-21 00:06:24,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:24,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:06:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:24,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:24,305 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:06:24,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821871889] [2021-11-21 00:06:24,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821871889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:06:24,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:06:24,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:06:24,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48303679] [2021-11-21 00:06:24,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:06:24,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 00:06:24,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:06:24,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 00:06:24,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:06:24,358 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.75) internal successors, (56), 33 states have internal predecessors, (56), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-11-21 00:06:24,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:06:24,432 INFO L93 Difference]: Finished difference Result 67 states and 111 transitions. [2021-11-21 00:06:24,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 00:06:24,435 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-11-21 00:06:24,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:06:24,466 INFO L225 Difference]: With dead ends: 67 [2021-11-21 00:06:24,467 INFO L226 Difference]: Without dead ends: 32 [2021-11-21 00:06:24,478 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 [2021-11-21 00:06:24,484 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:06:24,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:06:24,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-21 00:06:24,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-11-21 00:06:24,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 31 states have internal predecessors, (44), 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) [2021-11-21 00:06:24,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 44 transitions. [2021-11-21 00:06:24,534 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 44 transitions. Word has length 8 [2021-11-21 00:06:24,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:06:24,535 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 44 transitions. [2021-11-21 00:06:24,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-11-21 00:06:24,536 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2021-11-21 00:06:24,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 00:06:24,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:06:24,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:06:24,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:06:24,538 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:06:24,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:06:24,544 INFO L85 PathProgramCache]: Analyzing trace with hash 342564116, now seen corresponding path program 1 times [2021-11-21 00:06:24,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:06:24,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116194991] [2021-11-21 00:06:24,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:24,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:06:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:06:24,659 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 00:06:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:06:24,777 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 00:06:24,777 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 00:06:24,779 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 00:06:24,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:06:24,785 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-21 00:06:24,788 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 00:06:24,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:06:24 BoogieIcfgContainer [2021-11-21 00:06:24,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 00:06:24,813 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 00:06:24,813 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 00:06:24,813 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 00:06:24,814 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:06:23" (3/4) ... [2021-11-21 00:06:24,816 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 00:06:24,817 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 00:06:24,818 INFO L158 Benchmark]: Toolchain (without parser) took 1700.70ms. Allocated memory is still 109.1MB. Free memory was 70.8MB in the beginning and 73.7MB in the end (delta: -3.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:06:24,818 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 109.1MB. Free memory was 87.6MB in the beginning and 87.5MB in the end (delta: 49.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:06:24,819 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.72ms. Allocated memory is still 109.1MB. Free memory was 70.6MB in the beginning and 82.3MB in the end (delta: -11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 00:06:24,820 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.04ms. Allocated memory is still 109.1MB. Free memory was 82.3MB in the beginning and 80.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:06:24,821 INFO L158 Benchmark]: Boogie Preprocessor took 49.40ms. Allocated memory is still 109.1MB. Free memory was 80.0MB in the beginning and 78.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:06:24,821 INFO L158 Benchmark]: RCFGBuilder took 444.05ms. Allocated memory is still 109.1MB. Free memory was 78.5MB in the beginning and 62.6MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-21 00:06:24,822 INFO L158 Benchmark]: TraceAbstraction took 839.12ms. Allocated memory is still 109.1MB. Free memory was 62.0MB in the beginning and 74.2MB in the end (delta: -12.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:06:24,822 INFO L158 Benchmark]: Witness Printer took 4.21ms. Allocated memory is still 109.1MB. Free memory is still 73.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:06:24,826 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 109.1MB. Free memory was 87.6MB in the beginning and 87.5MB in the end (delta: 49.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.72ms. Allocated memory is still 109.1MB. Free memory was 70.6MB in the beginning and 82.3MB in the end (delta: -11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.04ms. Allocated memory is still 109.1MB. Free memory was 82.3MB in the beginning and 80.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.40ms. Allocated memory is still 109.1MB. Free memory was 80.0MB in the beginning and 78.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 444.05ms. Allocated memory is still 109.1MB. Free memory was 78.5MB in the beginning and 62.6MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 839.12ms. Allocated memory is still 109.1MB. Free memory was 62.0MB in the beginning and 74.2MB in the end (delta: -12.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.21ms. Allocated memory is still 109.1MB. Free memory is still 73.7MB. 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: 125]: 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 110, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L118] float x = __VERIFIER_nondet_float(); [L119] float y = 0.0f; [L121] CALL, EXPR fmod_float(x, y) [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=4294967297, \old(y)=0, one_fmod=1, x=4294967297, y=0, Zero_fmod={4:0}] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff VAL [\old(x)=4294967297, \old(y)=0, one_fmod=1, sx=-1, x=4294967297, y=0, Zero_fmod={4:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [\old(x)=4294967297, \old(y)=0, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=4294967297, y=0, Zero_fmod={4:0}] [L121] RET, EXPR fmod_float(x, y) [L121] float res = fmod_float(x, y); [L124] CALL, EXPR isnan_float(res) [L110] return x != x; [L124] RET, EXPR isnan_float(res) [L124] COND TRUE !isnan_float(res) [L125] reach_error() VAL [one_fmod=1, res=4294967296, x=4294967297, y=0, Zero_fmod={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, 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, 36 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 36 mSDtfsCounter, 10 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=34occurred 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, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 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 [2021-11-21 00:06:24,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/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_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1121a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P --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 a675a014adb554d3b3cb02e2742644f85bc00ae7c696ead14730bf8198b2dce7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:06:27,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:06:27,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:06:27,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:06:27,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:06:27,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:06:27,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:06:27,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:06:27,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:06:27,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:06:27,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:06:27,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:06:27,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:06:27,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:06:27,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:06:27,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:06:27,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:06:27,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:06:27,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:06:27,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:06:27,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:06:27,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:06:27,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:06:27,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:06:27,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:06:27,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:06:27,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:06:27,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:06:27,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:06:27,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:06:27,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:06:27,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:06:27,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:06:27,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:06:27,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:06:27,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:06:27,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:06:27,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:06:27,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:06:27,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:06:27,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:06:27,242 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 00:06:27,270 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:06:27,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:06:27,271 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:06:27,271 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:06:27,272 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:06:27,272 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:06:27,272 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:06:27,273 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:06:27,273 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:06:27,273 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:06:27,273 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:06:27,273 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:06:27,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:06:27,274 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:06:27,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:06:27,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:06:27,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:06:27,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:06:27,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:06:27,275 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 00:06:27,276 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 00:06:27,276 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:06:27,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:06:27,276 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:06:27,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:06:27,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:06:27,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 00:06:27,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:06:27,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:06:27,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:06:27,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:06:27,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:06:27,278 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 00:06:27,278 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 00:06:27,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:06:27,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:06:27,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:06:27,279 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_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a675a014adb554d3b3cb02e2742644f85bc00ae7c696ead14730bf8198b2dce7 [2021-11-21 00:06:27,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:06:27,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:06:27,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:06:27,725 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:06:27,726 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:06:27,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-newlib/float_req_bl_1121a.c [2021-11-21 00:06:27,793 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/data/6bf524dd7/2b5221793fcd44008f5a9bb5324f47d0/FLAGff3d3cf40 [2021-11-21 00:06:28,330 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:06:28,332 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/sv-benchmarks/c/float-newlib/float_req_bl_1121a.c [2021-11-21 00:06:28,343 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/data/6bf524dd7/2b5221793fcd44008f5a9bb5324f47d0/FLAGff3d3cf40 [2021-11-21 00:06:28,646 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/data/6bf524dd7/2b5221793fcd44008f5a9bb5324f47d0 [2021-11-21 00:06:28,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:06:28,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:06:28,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:06:28,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:06:28,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:06:28,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:06:28" (1/1) ... [2021-11-21 00:06:28,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16698c9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:28, skipping insertion in model container [2021-11-21 00:06:28,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:06:28" (1/1) ... [2021-11-21 00:06:28,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:06:28,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:06:28,880 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_1dd85782-368e-41d2-9e26-61e2cf92bd77/sv-benchmarks/c/float-newlib/float_req_bl_1121a.c[2701,2714] [2021-11-21 00:06:28,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:06:28,895 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:06:28,969 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_1dd85782-368e-41d2-9e26-61e2cf92bd77/sv-benchmarks/c/float-newlib/float_req_bl_1121a.c[2701,2714] [2021-11-21 00:06:28,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:06:28,987 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:06:28,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:28 WrapperNode [2021-11-21 00:06:28,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:06:28,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:06:28,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:06:28,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:06:29,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:28" (1/1) ... [2021-11-21 00:06:29,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:28" (1/1) ... [2021-11-21 00:06:29,049 INFO L137 Inliner]: procedures = 21, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 169 [2021-11-21 00:06:29,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:06:29,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:06:29,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:06:29,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:06:29,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:28" (1/1) ... [2021-11-21 00:06:29,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:28" (1/1) ... [2021-11-21 00:06:29,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:28" (1/1) ... [2021-11-21 00:06:29,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:28" (1/1) ... [2021-11-21 00:06:29,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:28" (1/1) ... [2021-11-21 00:06:29,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:28" (1/1) ... [2021-11-21 00:06:29,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:28" (1/1) ... [2021-11-21 00:06:29,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:06:29,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:06:29,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:06:29,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:06:29,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:28" (1/1) ... [2021-11-21 00:06:29,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:06:29,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:06:29,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:06:29,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:06:29,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:06:29,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-11-21 00:06:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 00:06:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:06:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-21 00:06:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 00:06:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:06:29,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:06:29,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-21 00:06:29,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 00:06:29,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:06:29,256 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:06:29,258 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:06:31,906 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:06:31,912 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:06:31,912 INFO L301 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-21 00:06:31,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:06:31 BoogieIcfgContainer [2021-11-21 00:06:31,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:06:31,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:06:31,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:06:31,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:06:31,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:06:28" (1/3) ... [2021-11-21 00:06:31,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d1829c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:06:31, skipping insertion in model container [2021-11-21 00:06:31,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:06:28" (2/3) ... [2021-11-21 00:06:31,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d1829c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:06:31, skipping insertion in model container [2021-11-21 00:06:31,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:06:31" (3/3) ... [2021-11-21 00:06:31,924 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121a.c [2021-11-21 00:06:31,929 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:06:31,930 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:06:31,979 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:06:31,986 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 [2021-11-21 00:06:31,987 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:06:32,001 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 40 states have (on average 1.75) internal successors, (70), 41 states have internal predecessors, (70), 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) [2021-11-21 00:06:32,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 00:06:32,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:06:32,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:06:32,008 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:06:32,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:06:32,014 INFO L85 PathProgramCache]: Analyzing trace with hash 666555284, now seen corresponding path program 1 times [2021-11-21 00:06:32,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:06:32,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843862237] [2021-11-21 00:06:32,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:32,024 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:06:32,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:06:32,026 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:06:32,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 00:06:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:32,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 00:06:32,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:06:32,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:32,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:06:32,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:32,430 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:06:32,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843862237] [2021-11-21 00:06:32,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [843862237] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:06:32,431 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:06:32,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 00:06:32,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396371694] [2021-11-21 00:06:32,434 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:06:32,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 00:06:32,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:06:32,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 00:06:32,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:06:32,482 INFO L87 Difference]: Start difference. First operand has 42 states, 40 states have (on average 1.75) internal successors, (70), 41 states have internal predecessors, (70), 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) [2021-11-21 00:06:32,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:06:32,512 INFO L93 Difference]: Finished difference Result 82 states and 138 transitions. [2021-11-21 00:06:32,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 00:06:32,515 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 [2021-11-21 00:06:32,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:06:32,525 INFO L225 Difference]: With dead ends: 82 [2021-11-21 00:06:32,525 INFO L226 Difference]: Without dead ends: 39 [2021-11-21 00:06:32,528 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 [2021-11-21 00:06:32,534 INFO L933 BasicCegarLoop]: 57 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, 57 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 [2021-11-21 00:06:32,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:06:32,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-21 00:06:32,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-11-21 00:06:32,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 38 states have internal predecessors, (54), 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) [2021-11-21 00:06:32,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2021-11-21 00:06:32,591 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 10 [2021-11-21 00:06:32,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:06:32,592 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2021-11-21 00:06:32,592 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) [2021-11-21 00:06:32,592 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2021-11-21 00:06:32,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 00:06:32,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:06:32,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:06:32,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:06:32,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:06:32,815 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:06:32,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:06:32,816 INFO L85 PathProgramCache]: Analyzing trace with hash 131116369, now seen corresponding path program 1 times [2021-11-21 00:06:32,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:06:32,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729935098] [2021-11-21 00:06:32,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:32,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:06:32,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:06:32,819 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:06:32,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 00:06:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:33,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 00:06:33,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:06:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:36,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:06:43,005 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_fmod_float_~x#1| (_ FloatingPoint 8 24))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode |ULTIMATE.start_fmod_float_~x#1| |c_ULTIMATE.start_fmod_float_~y#1|))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2021-11-21 00:07:03,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:07:03,659 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:07:03,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729935098] [2021-11-21 00:07:03,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729935098] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:03,660 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:03,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-21 00:07:03,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764649008] [2021-11-21 00:07:03,660 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:03,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 00:07:03,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:07:03,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 00:07:03,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2021-11-21 00:07:03,663 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) [2021-11-21 00:07:06,114 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_fmod_float_~x#1| (_ FloatingPoint 8 24))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode |ULTIMATE.start_fmod_float_~x#1| |c_ULTIMATE.start_fmod_float_~y#1|))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) (= |c_ULTIMATE.start_fmod_float_~y#1| (_ +zero 8 24)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-21 00:07:09,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:09,120 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2021-11-21 00:07:09,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:07:09,127 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) Word has length 12 [2021-11-21 00:07:09,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:09,128 INFO L225 Difference]: With dead ends: 44 [2021-11-21 00:07:09,129 INFO L226 Difference]: Without dead ends: 39 [2021-11-21 00:07:09,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=41, Invalid=97, Unknown=2, NotChecked=42, Total=182 [2021-11-21 00:07:09,131 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 4 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:09,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 307 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 82 Unchecked, 0.4s Time] [2021-11-21 00:07:09,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-21 00:07:09,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-11-21 00:07:09,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.394736842105263) internal successors, (53), 38 states have internal predecessors, (53), 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) [2021-11-21 00:07:09,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2021-11-21 00:07:09,138 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 12 [2021-11-21 00:07:09,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:09,139 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2021-11-21 00:07:09,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) [2021-11-21 00:07:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2021-11-21 00:07:09,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 00:07:09,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:09,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:07:09,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-21 00:07:09,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:07:09,355 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:07:09,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash -302456811, now seen corresponding path program 1 times [2021-11-21 00:07:09,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:07:09,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588274158] [2021-11-21 00:07:09,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:09,358 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:07:09,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:07:09,359 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:07:09,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 00:07:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:09,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 00:07:09,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:07:09,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:07:09,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:07:09,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:07:09,841 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:07:09,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588274158] [2021-11-21 00:07:09,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588274158] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:09,841 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:09,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 6 [2021-11-21 00:07:09,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630349423] [2021-11-21 00:07:09,842 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:09,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:07:09,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:07:09,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:07:09,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:07:09,843 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:07:09,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:09,895 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2021-11-21 00:07:09,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:07:09,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 00:07:09,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:09,896 INFO L225 Difference]: With dead ends: 39 [2021-11-21 00:07:09,896 INFO L226 Difference]: Without dead ends: 0 [2021-11-21 00:07:09,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:07:09,898 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:09,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 9 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 1 Unchecked, 0.0s Time] [2021-11-21 00:07:09,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-21 00:07:09,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-21 00:07:09,900 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) [2021-11-21 00:07:09,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-21 00:07:09,900 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-11-21 00:07:09,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:09,900 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-21 00:07:09,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:07:09,901 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-21 00:07:09,901 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-21 00:07:09,903 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 00:07:09,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:07:10,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:07:10,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-21 00:07:11,501 INFO L858 garLoopResultBuilder]: For program point L27(lines 27 31) no Hoare annotation was computed. [2021-11-21 00:07:11,501 INFO L858 garLoopResultBuilder]: For program point L60-1(lines 60 65) no Hoare annotation was computed. [2021-11-21 00:07:11,501 INFO L858 garLoopResultBuilder]: For program point L27-1(lines 19 107) no Hoare annotation was computed. [2021-11-21 00:07:11,501 INFO L858 garLoopResultBuilder]: For program point L27-2(lines 27 31) no Hoare annotation was computed. [2021-11-21 00:07:11,501 INFO L854 garLoopResultBuilder]: At program point L110(line 110) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmod_float_#res#1| |ULTIMATE.start_fmod_float_#res#1|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|)) [2021-11-21 00:07:11,502 INFO L858 garLoopResultBuilder]: For program point L69(lines 69 75) no Hoare annotation was computed. [2021-11-21 00:07:11,502 INFO L858 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-11-21 00:07:11,502 INFO L854 garLoopResultBuilder]: At program point L69-2(lines 67 76) the Hoare annotation is: false [2021-11-21 00:07:11,502 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-21 00:07:11,502 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-21 00:07:11,503 INFO L858 garLoopResultBuilder]: For program point L78(lines 78 80) no Hoare annotation was computed. [2021-11-21 00:07:11,503 INFO L858 garLoopResultBuilder]: For program point L78-2(lines 19 107) no Hoare annotation was computed. [2021-11-21 00:07:11,503 INFO L858 garLoopResultBuilder]: For program point L54-1(lines 19 107) no Hoare annotation was computed. [2021-11-21 00:07:11,503 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 39) no Hoare annotation was computed. [2021-11-21 00:07:11,503 INFO L861 garLoopResultBuilder]: At program point L129(lines 112 130) the Hoare annotation is: true [2021-11-21 00:07:11,503 INFO L858 garLoopResultBuilder]: For program point L88(lines 88 105) no Hoare annotation was computed. [2021-11-21 00:07:11,503 INFO L858 garLoopResultBuilder]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2021-11-21 00:07:11,504 INFO L854 garLoopResultBuilder]: At program point L22-2(lines 22 26) the Hoare annotation is: (and (= |ULTIMATE.start_fmod_float_~y#1| (_ +zero 8 24)) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-21 00:07:11,504 INFO L858 garLoopResultBuilder]: For program point L72(lines 72 73) no Hoare annotation was computed. [2021-11-21 00:07:11,504 INFO L858 garLoopResultBuilder]: For program point L48(lines 19 107) no Hoare annotation was computed. [2021-11-21 00:07:11,504 INFO L854 garLoopResultBuilder]: At program point L106(lines 19 107) the Hoare annotation is: (not (fp.eq |ULTIMATE.start_fmod_float_#res#1| |ULTIMATE.start_fmod_float_#res#1|)) [2021-11-21 00:07:11,504 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-11-21 00:07:11,505 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-21 00:07:11,505 INFO L858 garLoopResultBuilder]: For program point L90-1(lines 90 94) no Hoare annotation was computed. [2021-11-21 00:07:11,505 INFO L854 garLoopResultBuilder]: At program point L90-2(lines 90 94) the Hoare annotation is: false [2021-11-21 00:07:11,505 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 125) no Hoare annotation was computed. [2021-11-21 00:07:11,505 INFO L858 garLoopResultBuilder]: For program point L49-2(lines 49 50) no Hoare annotation was computed. [2021-11-21 00:07:11,505 INFO L854 garLoopResultBuilder]: At program point L49-3(lines 49 50) the Hoare annotation is: false [2021-11-21 00:07:11,506 INFO L858 garLoopResultBuilder]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2021-11-21 00:07:11,506 INFO L854 garLoopResultBuilder]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2021-11-21 00:07:11,506 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-21 00:07:11,506 INFO L858 garLoopResultBuilder]: For program point L99-3(lines 99 103) no Hoare annotation was computed. [2021-11-21 00:07:11,506 INFO L858 garLoopResultBuilder]: For program point L124(lines 124 127) no Hoare annotation was computed. [2021-11-21 00:07:11,506 INFO L858 garLoopResultBuilder]: For program point L42(lines 42 46) no Hoare annotation was computed. [2021-11-21 00:07:11,507 INFO L858 garLoopResultBuilder]: For program point L42-1(lines 19 107) no Hoare annotation was computed. [2021-11-21 00:07:11,507 INFO L858 garLoopResultBuilder]: For program point L67-1(lines 67 76) no Hoare annotation was computed. [2021-11-21 00:07:11,507 INFO L858 garLoopResultBuilder]: For program point L67-3(lines 67 76) no Hoare annotation was computed. [2021-11-21 00:07:11,507 INFO L858 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-11-21 00:07:11,507 INFO L854 garLoopResultBuilder]: At program point L84-2(lines 84 87) the Hoare annotation is: false [2021-11-21 00:07:11,507 INFO L858 garLoopResultBuilder]: For program point L84-3(lines 19 107) no Hoare annotation was computed. [2021-11-21 00:07:11,508 INFO L858 garLoopResultBuilder]: For program point L43-2(lines 43 44) no Hoare annotation was computed. [2021-11-21 00:07:11,508 INFO L854 garLoopResultBuilder]: At program point L43-3(lines 43 44) the Hoare annotation is: false [2021-11-21 00:07:11,511 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-21 00:07:11,513 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 00:07:11,526 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 00:07:11,527 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 00:07:11,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:07:11 BoogieIcfgContainer [2021-11-21 00:07:11,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 00:07:11,530 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 00:07:11,530 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 00:07:11,530 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 00:07:11,531 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:06:31" (3/4) ... [2021-11-21 00:07:11,534 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-21 00:07:11,545 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-21 00:07:11,546 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-21 00:07:11,546 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-21 00:07:11,546 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-21 00:07:11,580 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 00:07:11,581 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 00:07:11,581 INFO L158 Benchmark]: Toolchain (without parser) took 42931.43ms. Allocated memory was 65.0MB in the beginning and 92.3MB in the end (delta: 27.3MB). Free memory was 46.2MB in the beginning and 61.0MB in the end (delta: -14.8MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2021-11-21 00:07:11,582 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 65.0MB. Free memory was 47.7MB in the beginning and 47.7MB in the end (delta: 49.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:07:11,582 INFO L158 Benchmark]: CACSL2BoogieTranslator took 336.70ms. Allocated memory is still 65.0MB. Free memory was 46.0MB in the beginning and 48.5MB in the end (delta: -2.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 00:07:11,583 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.60ms. Allocated memory is still 65.0MB. Free memory was 48.3MB in the beginning and 46.4MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:07:11,583 INFO L158 Benchmark]: Boogie Preprocessor took 38.67ms. Allocated memory is still 65.0MB. Free memory was 46.4MB in the beginning and 44.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:07:11,584 INFO L158 Benchmark]: RCFGBuilder took 2824.94ms. Allocated memory was 65.0MB in the beginning and 92.3MB in the end (delta: 27.3MB). Free memory was 44.5MB in the beginning and 73.8MB in the end (delta: -29.3MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2021-11-21 00:07:11,584 INFO L158 Benchmark]: TraceAbstraction took 39612.24ms. Allocated memory is still 92.3MB. Free memory was 73.5MB in the beginning and 64.0MB in the end (delta: 9.4MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2021-11-21 00:07:11,585 INFO L158 Benchmark]: Witness Printer took 51.17ms. Allocated memory is still 92.3MB. Free memory was 64.0MB in the beginning and 61.0MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-21 00:07:11,587 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 65.0MB. Free memory was 47.7MB in the beginning and 47.7MB in the end (delta: 49.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 336.70ms. Allocated memory is still 65.0MB. Free memory was 46.0MB in the beginning and 48.5MB in the end (delta: -2.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.60ms. Allocated memory is still 65.0MB. Free memory was 48.3MB in the beginning and 46.4MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.67ms. Allocated memory is still 65.0MB. Free memory was 46.4MB in the beginning and 44.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2824.94ms. Allocated memory was 65.0MB in the beginning and 92.3MB in the end (delta: 27.3MB). Free memory was 44.5MB in the beginning and 73.8MB in the end (delta: -29.3MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * TraceAbstraction took 39612.24ms. Allocated memory is still 92.3MB. Free memory was 73.5MB in the beginning and 64.0MB in the end (delta: 9.4MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Witness Printer took 51.17ms. Allocated memory is still 92.3MB. Free memory was 64.0MB in the beginning and 61.0MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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: 125]: 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, 42 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 39.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 373 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 83 IncrementalHoareTripleChecker+Unchecked, 261 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 112 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 10.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 10 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 26 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 23 FormulaSimplificationTreeSizeReductionInter, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 31.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 10 QuantifiedInterpolants, 403 SizeOfPredicates, 16 NumberOfNonLiveVariables, 164 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: 110]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(\result, \result) && 1bv32 == \result - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 112]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant [2021-11-21 00:07:11,598 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 00:07:11,599 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: y == ~Pluszero~LONGDOUBLE() && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(\result, \result) RESULT: Ultimate proved your program to be correct! [2021-11-21 00:07:11,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dd85782-368e-41d2-9e26-61e2cf92bd77/bin/utaipan-TEXQjIfE4P/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