./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0970a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0970a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --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 6c0d87e5cab4fd8cfe59229ecc351c0984abd613d260378d067ff001b545db3a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:28:28,236 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:28:28,300 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 19:28:28,305 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:28:28,305 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:28:28,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:28:28,329 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:28:28,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:28:28,331 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:28:28,331 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:28:28,332 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:28:28,332 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:28:28,333 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:28:28,333 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:28:28,334 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:28:28,334 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:28:28,335 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:28:28,335 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:28:28,336 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:28:28,336 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:28:28,336 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:28:28,337 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:28:28,338 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:28:28,338 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:28:28,338 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:28:28,339 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:28:28,339 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:28:28,340 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:28:28,340 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:28:28,340 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:28:28,341 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:28:28,341 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:28:28,341 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:28:28,341 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:28:28,342 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:28:28,342 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:28:28,342 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:28:28,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:28:28,343 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:28:28,343 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:28:28,343 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:28:28,343 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:28:28,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:28:28,344 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:28:28,344 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:28:28,344 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:28:28,344 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:28:28,344 INFO L153 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_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c0d87e5cab4fd8cfe59229ecc351c0984abd613d260378d067ff001b545db3a [2023-12-02 19:28:28,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:28:28,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:28:28,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:28:28,584 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:28:28,584 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:28:28,585 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/float-newlib/float_req_bl_0970a.c [2023-12-02 19:28:31,297 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:28:31,486 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:28:31,487 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/sv-benchmarks/c/float-newlib/float_req_bl_0970a.c [2023-12-02 19:28:31,496 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/data/f7dc54fe3/1eb188573f4f43d195b44821cb882cef/FLAG14f565972 [2023-12-02 19:28:31,511 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/data/f7dc54fe3/1eb188573f4f43d195b44821cb882cef [2023-12-02 19:28:31,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:28:31,515 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:28:31,516 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:28:31,516 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:28:31,521 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:28:31,522 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:28:31" (1/1) ... [2023-12-02 19:28:31,523 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f8f5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31, skipping insertion in model container [2023-12-02 19:28:31,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:28:31" (1/1) ... [2023-12-02 19:28:31,553 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:28:31,732 WARN L240 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_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/sv-benchmarks/c/float-newlib/float_req_bl_0970a.c[4407,4420] [2023-12-02 19:28:31,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:28:31,748 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:28:31,788 WARN L240 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_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/sv-benchmarks/c/float-newlib/float_req_bl_0970a.c[4407,4420] [2023-12-02 19:28:31,788 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:28:31,804 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:28:31,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31 WrapperNode [2023-12-02 19:28:31,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:28:31,806 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:28:31,806 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:28:31,806 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:28:31,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (1/1) ... [2023-12-02 19:28:31,824 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (1/1) ... [2023-12-02 19:28:31,855 INFO L138 Inliner]: procedures = 19, calls = 39, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 295 [2023-12-02 19:28:31,855 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:28:31,856 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:28:31,856 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:28:31,856 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:28:31,866 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (1/1) ... [2023-12-02 19:28:31,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (1/1) ... [2023-12-02 19:28:31,871 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (1/1) ... [2023-12-02 19:28:31,871 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (1/1) ... [2023-12-02 19:28:31,883 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (1/1) ... [2023-12-02 19:28:31,888 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (1/1) ... [2023-12-02 19:28:31,890 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (1/1) ... [2023-12-02 19:28:31,892 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (1/1) ... [2023-12-02 19:28:31,897 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:28:31,897 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:28:31,898 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:28:31,898 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:28:31,898 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (1/1) ... [2023-12-02 19:28:31,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:28:31,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:28:31,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:28:31,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:28:31,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:28:31,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:28:31,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:28:31,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-12-02 19:28:31,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 19:28:31,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-12-02 19:28:31,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:28:31,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:28:31,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 19:28:31,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:28:32,055 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:28:32,057 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:28:32,366 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:28:32,532 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:28:32,532 INFO L309 CfgBuilder]: Removed 14 assume(true) statements. [2023-12-02 19:28:32,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:28:32 BoogieIcfgContainer [2023-12-02 19:28:32,534 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:28:32,537 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:28:32,537 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:28:32,540 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:28:32,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:28:31" (1/3) ... [2023-12-02 19:28:32,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7ab292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:28:32, skipping insertion in model container [2023-12-02 19:28:32,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:31" (2/3) ... [2023-12-02 19:28:32,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7ab292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:28:32, skipping insertion in model container [2023-12-02 19:28:32,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:28:32" (3/3) ... [2023-12-02 19:28:32,543 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0970a.c [2023-12-02 19:28:32,558 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:28:32,558 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:28:32,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:28:32,603 INFO L357 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=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@26224724, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:28:32,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:28:32,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 38 states have (on average 1.6842105263157894) internal successors, (64), 39 states have internal predecessors, (64), 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) [2023-12-02 19:28:32,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 19:28:32,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:28:32,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:28:32,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:28:32,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:28:32,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1173777739, now seen corresponding path program 1 times [2023-12-02 19:28:32,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:28:32,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501823988] [2023-12-02 19:28:32,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:28:32,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:28:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:28:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:28:32,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:28:32,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501823988] [2023-12-02 19:28:32,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501823988] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:28:32,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:28:32,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:28:32,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717276806] [2023-12-02 19:28:32,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:28:32,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:28:32,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:28:32,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:28:32,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:28:32,826 INFO L87 Difference]: Start difference. First operand has 40 states, 38 states have (on average 1.6842105263157894) internal successors, (64), 39 states have internal predecessors, (64), 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 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-12-02 19:28:32,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:28:32,880 INFO L93 Difference]: Finished difference Result 79 states and 127 transitions. [2023-12-02 19:28:32,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:28:32,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-12-02 19:28:32,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:28:32,892 INFO L225 Difference]: With dead ends: 79 [2023-12-02 19:28:32,892 INFO L226 Difference]: Without dead ends: 37 [2023-12-02 19:28:32,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:28:32,899 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:28:32,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:28:32,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-02 19:28:32,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-12-02 19:28:32,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 36 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) [2023-12-02 19:28:32,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2023-12-02 19:28:32,932 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 9 [2023-12-02 19:28:32,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:28:32,933 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2023-12-02 19:28:32,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-12-02 19:28:32,933 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2023-12-02 19:28:32,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 19:28:32,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:28:32,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:28:32,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:28:32,935 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:28:32,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:28:32,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1752970521, now seen corresponding path program 1 times [2023-12-02 19:28:32,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:28:32,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188604767] [2023-12-02 19:28:32,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:28:32,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:28:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 19:28:32,993 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 19:28:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 19:28:33,062 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 19:28:33,062 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 19:28:33,064 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 19:28:33,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:28:33,068 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-02 19:28:33,070 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 19:28:33,090 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short19 could not be translated [2023-12-02 19:28:33,091 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret18 could not be translated [2023-12-02 19:28:33,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:28:33 BoogieIcfgContainer [2023-12-02 19:28:33,102 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 19:28:33,103 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 19:28:33,103 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 19:28:33,103 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 19:28:33,104 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:28:32" (3/4) ... [2023-12-02 19:28:33,105 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 19:28:33,106 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 19:28:33,107 INFO L158 Benchmark]: Toolchain (without parser) took 1592.24ms. Allocated memory was 153.1MB in the beginning and 197.1MB in the end (delta: 44.0MB). Free memory was 120.6MB in the beginning and 130.5MB in the end (delta: -9.8MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-12-02 19:28:33,108 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 52.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:28:33,108 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.88ms. Allocated memory is still 153.1MB. Free memory was 120.6MB in the beginning and 106.9MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 19:28:33,109 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.72ms. Allocated memory is still 153.1MB. Free memory was 106.9MB in the beginning and 104.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:28:33,109 INFO L158 Benchmark]: Boogie Preprocessor took 40.68ms. Allocated memory is still 153.1MB. Free memory was 104.2MB in the beginning and 102.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:28:33,110 INFO L158 Benchmark]: RCFGBuilder took 636.75ms. Allocated memory was 153.1MB in the beginning and 197.1MB in the end (delta: 44.0MB). Free memory was 102.1MB in the beginning and 165.9MB in the end (delta: -63.8MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. [2023-12-02 19:28:33,111 INFO L158 Benchmark]: TraceAbstraction took 565.20ms. Allocated memory is still 197.1MB. Free memory was 164.9MB in the beginning and 131.5MB in the end (delta: 33.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-12-02 19:28:33,111 INFO L158 Benchmark]: Witness Printer took 3.49ms. Allocated memory is still 197.1MB. Free memory was 131.5MB in the beginning and 130.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:28:33,114 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 52.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.88ms. Allocated memory is still 153.1MB. Free memory was 120.6MB in the beginning and 106.9MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.72ms. Allocated memory is still 153.1MB. Free memory was 106.9MB in the beginning and 104.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.68ms. Allocated memory is still 153.1MB. Free memory was 104.2MB in the beginning and 102.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 636.75ms. Allocated memory was 153.1MB in the beginning and 197.1MB in the end (delta: 44.0MB). Free memory was 102.1MB in the beginning and 165.9MB in the end (delta: -63.8MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. * TraceAbstraction took 565.20ms. Allocated memory is still 197.1MB. Free memory was 164.9MB in the beginning and 131.5MB in the end (delta: 33.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 3.49ms. Allocated memory is still 197.1MB. Free memory was 131.5MB in the beginning and 130.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short19 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret18 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 176]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 147, overapproximation of someBinaryArithmeticFLOAToperation at line 119. Possible FailurePath: [L14-L18] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L20] static const float zero_log = 0.0; [L100-L103] static const float two25_log10 = 3.3554432000e+07, ivln10_log10 = 4.3429449201e-01, log10_2hi_log10 = 3.0102920532e-01, log10_2lo_log10 = 7.9034151668e-07; [L105] static const float zero = 0.0; [L168] float x = __VERIFIER_nondet_float(); [L170] x < 0 && isfinite_float(x) [L170] CALL, EXPR isfinite_float(x) [L151] __int32_t ix; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, \old(x)=4286578698, ivln10_log10=43429449201/100000000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, log10_2hi_log10=7525730133/25000000000, log10_2lo_log10=19758537917/25000000000000000, two25_log10=33554432, two25_log=33554432, x=4286578698, zero=0, zero_log=0] [L153] ieee_float_shape_type gf_u; [L154] EXPR gf_u.value = (x) [L155] EXPR gf_u.word [L155] EXPR (ix) = gf_u.word [L152-L156] { ieee_float_shape_type gf_u; gf_u.value = (x); (ix) = gf_u.word; } VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, \old(x)=4286578698, ivln10_log10=43429449201/100000000000, ix=-8388609, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, log10_2hi_log10=7525730133/25000000000, log10_2lo_log10=19758537917/25000000000000000, two25_log10=33554432, two25_log=33554432, x=4286578698, zero=0, zero_log=0] [L157] ix &= 0x7fffffff [L158] return (((ix) < 0x7f800000L)); [L170] RET, EXPR isfinite_float(x) [L170] x < 0 && isfinite_float(x) VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ivln10_log10=43429449201/100000000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, log10_2hi_log10=7525730133/25000000000, log10_2lo_log10=19758537917/25000000000000000, two25_log10=33554432, two25_log=33554432, x=4286578698, zero=0, zero_log=0] [L170] COND TRUE x < 0 && isfinite_float(x) [L172] CALL, EXPR __ieee754_log10f(x) [L108] float y, z; [L109] __int32_t i, k, hx; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, \old(x)=4286578698, ivln10_log10=43429449201/100000000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, log10_2hi_log10=7525730133/25000000000, log10_2lo_log10=19758537917/25000000000000000, two25_log10=33554432, two25_log=33554432, x=4286578698, zero=0, zero_log=0] [L112] ieee_float_shape_type gf_u; [L113] EXPR gf_u.value = (x) [L114] EXPR gf_u.word [L114] EXPR (hx) = gf_u.word [L111-L115] { ieee_float_shape_type gf_u; gf_u.value = (x); (hx) = gf_u.word; } VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, \old(x)=4286578698, hx=-2147483648, ivln10_log10=43429449201/100000000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, log10_2hi_log10=7525730133/25000000000, log10_2lo_log10=19758537917/25000000000000000, two25_log10=33554432, two25_log=33554432, x=4286578698, zero=0, zero_log=0] [L117] k = 0 VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, \old(x)=4286578698, hx=-2147483648, ivln10_log10=43429449201/100000000000, k=0, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, log10_2hi_log10=7525730133/25000000000, log10_2lo_log10=19758537917/25000000000000000, two25_log10=33554432, two25_log=33554432, x=4286578698, zero=0, zero_log=0] [L118] COND TRUE ((hx & 0x7fffffff) == 0) [L119] return -two25_log10 / zero; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, \old(x)=4286578698, hx=-2147483648, ivln10_log10=43429449201/100000000000, k=0, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, log10_2hi_log10=7525730133/25000000000, log10_2lo_log10=19758537917/25000000000000000, two25_log10=33554432, two25_log=33554432, x=4286578698, zero=0, zero_log=0] [L172] RET, EXPR __ieee754_log10f(x) [L172] float res = __ieee754_log10f(x); [L175] CALL, EXPR isnan_float(res) [L147] return x != x; [L175] RET, EXPR isnan_float(res) [L175] COND TRUE !isnan_float(res) [L176] reach_error() VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ivln10_log10=43429449201/100000000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, log10_2hi_log10=7525730133/25000000000, log10_2lo_log10=19758537917/25000000000000000, res=4286578699, two25_log10=33554432, two25_log=33554432, x=4286578698, zero=0, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 77 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 40 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 19:28:33,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0970a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --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 6c0d87e5cab4fd8cfe59229ecc351c0984abd613d260378d067ff001b545db3a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:28:34,973 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:28:35,051 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 19:28:35,057 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:28:35,057 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:28:35,086 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:28:35,087 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:28:35,088 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:28:35,088 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:28:35,089 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:28:35,090 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:28:35,090 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:28:35,091 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:28:35,091 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:28:35,092 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:28:35,092 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:28:35,093 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:28:35,094 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:28:35,094 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:28:35,095 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:28:35,095 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:28:35,096 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:28:35,096 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:28:35,097 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:28:35,097 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 19:28:35,098 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 19:28:35,098 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 19:28:35,098 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:28:35,099 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:28:35,099 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:28:35,100 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:28:35,100 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 19:28:35,100 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:28:35,101 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:28:35,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:28:35,101 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:28:35,101 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:28:35,102 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:28:35,102 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 19:28:35,102 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 19:28:35,102 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:28:35,103 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:28:35,103 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:28:35,103 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:28:35,103 INFO L153 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_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c0d87e5cab4fd8cfe59229ecc351c0984abd613d260378d067ff001b545db3a [2023-12-02 19:28:35,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:28:35,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:28:35,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:28:35,397 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:28:35,397 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:28:35,398 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/float-newlib/float_req_bl_0970a.c [2023-12-02 19:28:38,104 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:28:38,311 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:28:38,312 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/sv-benchmarks/c/float-newlib/float_req_bl_0970a.c [2023-12-02 19:28:38,321 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/data/6cfd49e0c/4ed06d22bd2146c1a0d99d6b51420a77/FLAGc623242e8 [2023-12-02 19:28:38,332 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/data/6cfd49e0c/4ed06d22bd2146c1a0d99d6b51420a77 [2023-12-02 19:28:38,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:28:38,336 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:28:38,337 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:28:38,337 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:28:38,342 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:28:38,342 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:28:38" (1/1) ... [2023-12-02 19:28:38,343 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0d75c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:38, skipping insertion in model container [2023-12-02 19:28:38,343 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:28:38" (1/1) ... [2023-12-02 19:28:38,372 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:28:38,575 WARN L240 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_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/sv-benchmarks/c/float-newlib/float_req_bl_0970a.c[4407,4420] [2023-12-02 19:28:38,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:28:38,595 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:28:38,635 WARN L240 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_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/sv-benchmarks/c/float-newlib/float_req_bl_0970a.c[4407,4420] [2023-12-02 19:28:38,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:28:38,654 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:28:38,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:38 WrapperNode [2023-12-02 19:28:38,655 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:28:38,656 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:28:38,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:28:38,657 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:28:38,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:38" (1/1) ... [2023-12-02 19:28:38,678 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:38" (1/1) ... [2023-12-02 19:28:38,707 INFO L138 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 240 [2023-12-02 19:28:38,708 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:28:38,708 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:28:38,709 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:28:38,709 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:28:38,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:38" (1/1) ... [2023-12-02 19:28:38,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:38" (1/1) ... [2023-12-02 19:28:38,724 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:38" (1/1) ... [2023-12-02 19:28:38,725 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:38" (1/1) ... [2023-12-02 19:28:38,738 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:38" (1/1) ... [2023-12-02 19:28:38,743 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:38" (1/1) ... [2023-12-02 19:28:38,746 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:38" (1/1) ... [2023-12-02 19:28:38,749 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:38" (1/1) ... [2023-12-02 19:28:38,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:28:38,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:28:38,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:28:38,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:28:38,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:38" (1/1) ... [2023-12-02 19:28:38,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:28:38,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:28:38,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:28:38,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:28:38,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:28:38,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 19:28:38,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:28:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-12-02 19:28:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 19:28:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:28:38,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:28:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-12-02 19:28:38,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 19:28:38,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:28:38,932 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:28:38,934 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:28:58,691 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:28:58,715 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:28:58,715 INFO L309 CfgBuilder]: Removed 14 assume(true) statements. [2023-12-02 19:28:58,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:28:58 BoogieIcfgContainer [2023-12-02 19:28:58,716 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:28:58,717 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:28:58,718 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:28:58,720 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:28:58,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:28:38" (1/3) ... [2023-12-02 19:28:58,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2139cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:28:58, skipping insertion in model container [2023-12-02 19:28:58,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:38" (2/3) ... [2023-12-02 19:28:58,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2139cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:28:58, skipping insertion in model container [2023-12-02 19:28:58,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:28:58" (3/3) ... [2023-12-02 19:28:58,723 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0970a.c [2023-12-02 19:28:58,737 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:28:58,737 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:28:58,775 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:28:58,780 INFO L357 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=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3c04a7fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:28:58,780 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:28:58,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 46 states have internal predecessors, (78), 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) [2023-12-02 19:28:58,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 19:28:58,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:28:58,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:28:58,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:28:58,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:28:58,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1460872651, now seen corresponding path program 1 times [2023-12-02 19:28:58,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:28:58,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606353173] [2023-12-02 19:28:58,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:28:58,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:28:58,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:28:58,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:28:58,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 19:28:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:28:59,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 19:28:59,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:28:59,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:28:59,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:28:59,393 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:28:59,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606353173] [2023-12-02 19:28:59,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606353173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:28:59,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:28:59,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:28:59,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924886630] [2023-12-02 19:28:59,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:28:59,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 19:28:59,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:28:59,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 19:28:59,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 19:28:59,421 INFO L87 Difference]: Start difference. First operand has 47 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 46 states have internal predecessors, (78), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-12-02 19:28:59,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:28:59,475 INFO L93 Difference]: Finished difference Result 92 states and 153 transitions. [2023-12-02 19:28:59,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 19:28:59,477 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2023-12-02 19:28:59,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:28:59,486 INFO L225 Difference]: With dead ends: 92 [2023-12-02 19:28:59,486 INFO L226 Difference]: Without dead ends: 44 [2023-12-02 19:28:59,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 19:28:59,492 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:28:59,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:28:59,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-02 19:28:59,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-02 19:28:59,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.372093023255814) internal successors, (59), 43 states have internal predecessors, (59), 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) [2023-12-02 19:28:59,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 59 transitions. [2023-12-02 19:28:59,527 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 59 transitions. Word has length 9 [2023-12-02 19:28:59,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:28:59,527 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 59 transitions. [2023-12-02 19:28:59,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-12-02 19:28:59,528 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 59 transitions. [2023-12-02 19:28:59,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 19:28:59,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:28:59,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:28:59,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:28:59,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:28:59,734 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:28:59,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:28:59,735 INFO L85 PathProgramCache]: Analyzing trace with hash -110728072, now seen corresponding path program 1 times [2023-12-02 19:28:59,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:28:59,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089187685] [2023-12-02 19:28:59,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:28:59,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:28:59,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:28:59,738 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:28:59,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 19:29:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:00,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 19:29:00,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:29:00,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:29:00,301 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:29:00,301 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:29:00,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089187685] [2023-12-02 19:29:00,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089187685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:00,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:00,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:29:00,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165097811] [2023-12-02 19:29:00,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:00,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:29:00,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:29:00,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:29:00,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:29:00,304 INFO L87 Difference]: Start difference. First operand 44 states and 59 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2023-12-02 19:29:00,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:00,369 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2023-12-02 19:29:00,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:29:00,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 [2023-12-02 19:29:00,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:00,371 INFO L225 Difference]: With dead ends: 83 [2023-12-02 19:29:00,371 INFO L226 Difference]: Without dead ends: 44 [2023-12-02 19:29:00,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:29:00,373 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:00,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:29:00,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-02 19:29:00,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-02 19:29:00,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 43 states have internal predecessors, (58), 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) [2023-12-02 19:29:00,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2023-12-02 19:29:00,380 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 10 [2023-12-02 19:29:00,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:00,381 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2023-12-02 19:29:00,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2023-12-02 19:29:00,381 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2023-12-02 19:29:00,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 19:29:00,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:00,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:29:00,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 19:29:00,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:29:00,583 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:29:00,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:00,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1256344410, now seen corresponding path program 1 times [2023-12-02 19:29:00,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:29:00,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147795747] [2023-12-02 19:29:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:00,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:29:00,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:29:00,585 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:29:00,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-02 19:29:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:01,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 19:29:01,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:29:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:29:01,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:29:01,645 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:29:01,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147795747] [2023-12-02 19:29:01,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1147795747] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:01,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:01,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:29:01,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554988878] [2023-12-02 19:29:01,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:01,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:29:01,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:29:01,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:29:01,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:29:01,648 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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) [2023-12-02 19:29:02,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:02,789 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2023-12-02 19:29:02,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:29:02,790 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 [2023-12-02 19:29:02,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:02,790 INFO L225 Difference]: With dead ends: 48 [2023-12-02 19:29:02,791 INFO L226 Difference]: Without dead ends: 15 [2023-12-02 19:29:02,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:29:02,793 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 19 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:02,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 18 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 19:29:02,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-02 19:29:02,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-02 19:29:02,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:29:02,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2023-12-02 19:29:02,797 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 13 [2023-12-02 19:29:02,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:02,797 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2023-12-02 19:29:02,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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) [2023-12-02 19:29:02,798 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2023-12-02 19:29:02,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 19:29:02,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:02,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:29:02,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 19:29:02,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:29:02,999 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:29:03,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:03,000 INFO L85 PathProgramCache]: Analyzing trace with hash 289125685, now seen corresponding path program 1 times [2023-12-02 19:29:03,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:29:03,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514584592] [2023-12-02 19:29:03,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:03,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:29:03,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:29:03,002 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:29:03,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-02 19:29:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:03,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 19:29:03,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:29:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:29:04,112 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:29:04,113 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:29:04,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514584592] [2023-12-02 19:29:04,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514584592] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:04,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:04,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:29:04,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955568447] [2023-12-02 19:29:04,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:04,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:29:04,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:29:04,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:29:04,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:29:04,115 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:29:04,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:04,768 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2023-12-02 19:29:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:29:04,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-02 19:29:04,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:04,769 INFO L225 Difference]: With dead ends: 15 [2023-12-02 19:29:04,769 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 19:29:04,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:29:04,770 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:04,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 23 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:29:04,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 19:29:04,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 19:29:04,772 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) [2023-12-02 19:29:04,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 19:29:04,772 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2023-12-02 19:29:04,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:04,772 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 19:29:04,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:29:04,772 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 19:29:04,772 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 19:29:04,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 19:29:04,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 19:29:04,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:29:04,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 19:29:05,125 INFO L899 garLoopResultBuilder]: For program point L93(lines 93 96) no Hoare annotation was computed. [2023-12-02 19:29:05,125 INFO L899 garLoopResultBuilder]: For program point L60(lines 60 65) no Hoare annotation was computed. [2023-12-02 19:29:05,125 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 119) no Hoare annotation was computed. [2023-12-02 19:29:05,125 INFO L899 garLoopResultBuilder]: For program point L85(lines 85 97) no Hoare annotation was computed. [2023-12-02 19:29:05,125 INFO L899 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2023-12-02 19:29:05,125 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 161 182) no Hoare annotation was computed. [2023-12-02 19:29:05,126 INFO L899 garLoopResultBuilder]: For program point L127-1(lines 127 131) no Hoare annotation was computed. [2023-12-02 19:29:05,126 INFO L895 garLoopResultBuilder]: At program point L127-2(lines 127 131) the Hoare annotation is: false [2023-12-02 19:29:05,126 INFO L899 garLoopResultBuilder]: For program point L152-1(lines 152 156) no Hoare annotation was computed. [2023-12-02 19:29:05,126 INFO L895 garLoopResultBuilder]: At program point L152-2(lines 152 156) the Hoare annotation is: (and (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ~zero~0) |ULTIMATE.start_main_#t~short14#1| (= currentRoundingMode roundNearestTiesToEven) (exists ((currentRoundingMode RoundingMode)) (fp.lt |ULTIMATE.start_main_~x~0#1| ((_ to_fp 8 24) currentRoundingMode (_ bv0 32))))) [2023-12-02 19:29:05,126 INFO L899 garLoopResultBuilder]: For program point L152-3(lines 152 156) no Hoare annotation was computed. [2023-12-02 19:29:05,127 INFO L899 garLoopResultBuilder]: For program point L111-1(lines 111 115) no Hoare annotation was computed. [2023-12-02 19:29:05,127 INFO L895 garLoopResultBuilder]: At program point L111-2(lines 111 115) the Hoare annotation is: (and (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ~zero~0) (exists ((currentRoundingMode RoundingMode)) (fp.lt |ULTIMATE.start___ieee754_log10f_~x#1| ((_ to_fp 8 24) currentRoundingMode (_ bv0 32)))) (= currentRoundingMode roundNearestTiesToEven) (exists ((currentRoundingMode RoundingMode)) (fp.lt |ULTIMATE.start_main_~x~0#1| ((_ to_fp 8 24) currentRoundingMode (_ bv0 32))))) [2023-12-02 19:29:05,127 INFO L899 garLoopResultBuilder]: For program point L111-3(lines 111 115) no Hoare annotation was computed. [2023-12-02 19:29:05,127 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 38) no Hoare annotation was computed. [2023-12-02 19:29:05,127 INFO L899 garLoopResultBuilder]: For program point L120(lines 120 121) no Hoare annotation was computed. [2023-12-02 19:29:05,127 INFO L899 garLoopResultBuilder]: For program point L87(lines 87 91) no Hoare annotation was computed. [2023-12-02 19:29:05,127 INFO L899 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2023-12-02 19:29:05,128 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 19:29:05,128 INFO L899 garLoopResultBuilder]: For program point L170-2(lines 170 179) no Hoare annotation was computed. [2023-12-02 19:29:05,128 INFO L899 garLoopResultBuilder]: For program point L137-1(lines 137 141) no Hoare annotation was computed. [2023-12-02 19:29:05,128 INFO L895 garLoopResultBuilder]: At program point L137-2(lines 137 141) the Hoare annotation is: false [2023-12-02 19:29:05,128 INFO L899 garLoopResultBuilder]: For program point L137-3(lines 137 141) no Hoare annotation was computed. [2023-12-02 19:29:05,128 INFO L899 garLoopResultBuilder]: For program point L170-4(lines 170 179) no Hoare annotation was computed. [2023-12-02 19:29:05,129 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 47) no Hoare annotation was computed. [2023-12-02 19:29:05,129 INFO L899 garLoopResultBuilder]: For program point L39-1(lines 39 47) no Hoare annotation was computed. [2023-12-02 19:29:05,129 INFO L899 garLoopResultBuilder]: For program point L122(lines 122 123) no Hoare annotation was computed. [2023-12-02 19:29:05,129 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 176) no Hoare annotation was computed. [2023-12-02 19:29:05,129 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 34) no Hoare annotation was computed. [2023-12-02 19:29:05,129 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 19:29:05,129 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 132) no Hoare annotation was computed. [2023-12-02 19:29:05,129 INFO L899 garLoopResultBuilder]: For program point L124-1(lines 124 132) no Hoare annotation was computed. [2023-12-02 19:29:05,130 INFO L899 garLoopResultBuilder]: For program point L58(lines 58 74) no Hoare annotation was computed. [2023-12-02 19:29:05,130 INFO L899 garLoopResultBuilder]: For program point __ieee754_logf_returnLabel#1(lines 22 98) no Hoare annotation was computed. [2023-12-02 19:29:05,130 INFO L899 garLoopResultBuilder]: For program point L42-1(lines 42 46) no Hoare annotation was computed. [2023-12-02 19:29:05,130 INFO L895 garLoopResultBuilder]: At program point L42-2(lines 42 46) the Hoare annotation is: false [2023-12-02 19:29:05,131 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 66) no Hoare annotation was computed. [2023-12-02 19:29:05,131 INFO L899 garLoopResultBuilder]: For program point L26-1(lines 26 30) no Hoare annotation was computed. [2023-12-02 19:29:05,131 INFO L895 garLoopResultBuilder]: At program point L26-2(lines 26 30) the Hoare annotation is: false [2023-12-02 19:29:05,131 INFO L899 garLoopResultBuilder]: For program point L26-3(lines 26 30) no Hoare annotation was computed. [2023-12-02 19:29:05,131 INFO L899 garLoopResultBuilder]: For program point L51-1(lines 51 55) no Hoare annotation was computed. [2023-12-02 19:29:05,132 INFO L895 garLoopResultBuilder]: At program point L51-2(lines 51 55) the Hoare annotation is: false [2023-12-02 19:29:05,132 INFO L899 garLoopResultBuilder]: For program point L51-3(lines 51 55) no Hoare annotation was computed. [2023-12-02 19:29:05,132 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 178) no Hoare annotation was computed. [2023-12-02 19:29:05,132 INFO L899 garLoopResultBuilder]: For program point L68(lines 68 73) no Hoare annotation was computed. [2023-12-02 19:29:05,132 INFO L899 garLoopResultBuilder]: For program point __ieee754_log10f_returnLabel#1(lines 107 144) no Hoare annotation was computed. [2023-12-02 19:29:05,133 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 36) no Hoare annotation was computed. [2023-12-02 19:29:05,136 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-02 19:29:05,138 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 19:29:05,148 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated [2023-12-02 19:29:05,148 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated [2023-12-02 19:29:05,149 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp.lt~32(~x~0, ~to_fp~32(currentRoundingMode, 0bv32))) could not be translated [2023-12-02 19:29:05,149 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp.lt~32(~x, ~to_fp~32(currentRoundingMode, 0bv32))) could not be translated [2023-12-02 19:29:05,149 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated [2023-12-02 19:29:05,150 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp.lt~32(~x~0, ~to_fp~32(currentRoundingMode, 0bv32))) could not be translated [2023-12-02 19:29:05,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:29:05 BoogieIcfgContainer [2023-12-02 19:29:05,150 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 19:29:05,151 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 19:29:05,151 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 19:29:05,151 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 19:29:05,152 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:28:58" (3/4) ... [2023-12-02 19:29:05,153 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 19:29:05,162 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2023-12-02 19:29:05,163 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-12-02 19:29:05,163 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 19:29:05,164 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 19:29:05,278 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 19:29:05,278 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 19:29:05,278 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 19:29:05,279 INFO L158 Benchmark]: Toolchain (without parser) took 26943.33ms. Allocated memory is still 115.3MB. Free memory was 91.9MB in the beginning and 61.9MB in the end (delta: 30.0MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2023-12-02 19:29:05,279 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory is still 39.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:29:05,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.22ms. Allocated memory is still 115.3MB. Free memory was 91.9MB in the beginning and 77.4MB in the end (delta: 14.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 19:29:05,280 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.55ms. Allocated memory is still 115.3MB. Free memory was 77.4MB in the beginning and 75.1MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 19:29:05,281 INFO L158 Benchmark]: Boogie Preprocessor took 45.78ms. Allocated memory is still 115.3MB. Free memory was 75.1MB in the beginning and 72.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:29:05,281 INFO L158 Benchmark]: RCFGBuilder took 19960.96ms. Allocated memory is still 115.3MB. Free memory was 72.7MB in the beginning and 85.0MB in the end (delta: -12.3MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2023-12-02 19:29:05,281 INFO L158 Benchmark]: TraceAbstraction took 6432.77ms. Allocated memory is still 115.3MB. Free memory was 84.3MB in the beginning and 68.2MB in the end (delta: 16.1MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2023-12-02 19:29:05,282 INFO L158 Benchmark]: Witness Printer took 127.69ms. Allocated memory is still 115.3MB. Free memory was 68.2MB in the beginning and 61.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 19:29:05,284 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory is still 39.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.22ms. Allocated memory is still 115.3MB. Free memory was 91.9MB in the beginning and 77.4MB in the end (delta: 14.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.55ms. Allocated memory is still 115.3MB. Free memory was 77.4MB in the beginning and 75.1MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.78ms. Allocated memory is still 115.3MB. Free memory was 75.1MB in the beginning and 72.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 19960.96ms. Allocated memory is still 115.3MB. Free memory was 72.7MB in the beginning and 85.0MB in the end (delta: -12.3MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * TraceAbstraction took 6432.77ms. Allocated memory is still 115.3MB. Free memory was 84.3MB in the beginning and 68.2MB in the end (delta: 16.1MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. * Witness Printer took 127.69ms. Allocated memory is still 115.3MB. Free memory was 68.2MB in the beginning and 61.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp.lt~32(~x~0, ~to_fp~32(currentRoundingMode, 0bv32))) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp.lt~32(~x, ~to_fp~32(currentRoundingMode, 0bv32))) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp.lt~32(~x~0, ~to_fp~32(currentRoundingMode, 0bv32))) could not be translated * 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: 176]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 209 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 80 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 129 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 9 NumberOfFragments, 42 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 42 ConstructedInterpolants, 10 QuantifiedInterpolants, 212 SizeOfPredicates, 13 NumberOfNonLiveVariables, 245 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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: 152]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 111]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 137]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2023-12-02 19:29:05,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_262e6ae8-bb45-43db-bd92-a2fbc8428aa4/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE