./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1122b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1122b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 531a1139fb1df73d7771aceceeca279cd2242c70bbd9f853f2d0e457d633cadc ...................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1122b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 531a1139fb1df73d7771aceceeca279cd2242c70bbd9f853f2d0e457d633cadc .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:55:38,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:55:38,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:55:38,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:55:38,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:55:38,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:55:38,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:55:38,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:55:38,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:55:38,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:55:38,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:55:38,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:55:38,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:55:38,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:55:38,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:55:38,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:55:38,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:55:38,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:55:38,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:55:38,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:55:38,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:55:38,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:55:38,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:55:39,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:55:39,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:55:39,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:55:39,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:55:39,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:55:39,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:55:39,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:55:39,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:55:39,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:55:39,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:55:39,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:55:39,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:55:39,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:55:39,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:55:39,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:55:39,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:55:39,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:55:39,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:55:39,024 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:55:39,079 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:55:39,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:55:39,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:55:39,081 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:55:39,082 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:55:39,082 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:55:39,083 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:55:39,083 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:55:39,089 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:55:39,090 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:55:39,091 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:55:39,091 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:55:39,092 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:55:39,092 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:55:39,092 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:55:39,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:55:39,093 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:55:39,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:55:39,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:55:39,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:55:39,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:55:39,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:55:39,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:55:39,095 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:55:39,095 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:55:39,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:55:39,096 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:55:39,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:55:39,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:55:39,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:55:39,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:55:39,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:55:39,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:55:39,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:55:39,100 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:55:39,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:55:39,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:55:39,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:55:39,101 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:55:39,101 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 531a1139fb1df73d7771aceceeca279cd2242c70bbd9f853f2d0e457d633cadc [2021-10-29 04:55:39,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:55:39,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:55:39,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:55:39,379 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:55:39,380 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:55:39,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-newlib/float_req_bl_1122b.c [2021-10-29 04:55:39,458 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/data/b23306820/e32a0da36c3b41d8a5c176be1adc53a9/FLAGd9a6e58e7 [2021-10-29 04:55:39,891 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:55:39,892 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/sv-benchmarks/c/float-newlib/float_req_bl_1122b.c [2021-10-29 04:55:39,906 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/data/b23306820/e32a0da36c3b41d8a5c176be1adc53a9/FLAGd9a6e58e7 [2021-10-29 04:55:40,289 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/data/b23306820/e32a0da36c3b41d8a5c176be1adc53a9 [2021-10-29 04:55:40,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:55:40,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:55:40,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:55:40,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:55:40,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:55:40,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:55:40" (1/1) ... [2021-10-29 04:55:40,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6420f9a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:40, skipping insertion in model container [2021-10-29 04:55:40,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:55:40" (1/1) ... [2021-10-29 04:55:40,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:55:40,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:55:40,548 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/sv-benchmarks/c/float-newlib/float_req_bl_1122b.c[2726,2739] [2021-10-29 04:55:40,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:55:40,559 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:55:40,600 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/sv-benchmarks/c/float-newlib/float_req_bl_1122b.c[2726,2739] [2021-10-29 04:55:40,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:55:40,626 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:55:40,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:40 WrapperNode [2021-10-29 04:55:40,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:55:40,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:55:40,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:55:40,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:55:40,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:40" (1/1) ... [2021-10-29 04:55:40,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:40" (1/1) ... [2021-10-29 04:55:40,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:55:40,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:55:40,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:55:40,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:55:40,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:40" (1/1) ... [2021-10-29 04:55:40,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:40" (1/1) ... [2021-10-29 04:55:40,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:40" (1/1) ... [2021-10-29 04:55:40,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:40" (1/1) ... [2021-10-29 04:55:40,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:40" (1/1) ... [2021-10-29 04:55:40,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:40" (1/1) ... [2021-10-29 04:55:40,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:40" (1/1) ... [2021-10-29 04:55:40,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:55:40,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:55:40,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:55:40,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:55:40,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:40" (1/1) ... [2021-10-29 04:55:40,794 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:55:40,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:55:40,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:55:40,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:55:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:55:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:55:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 04:55:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-29 04:55:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-29 04:55:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:55:40,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:55:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 04:55:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-29 04:55:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 04:55:41,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:55:41,407 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-10-29 04:55:41,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:55:41 BoogieIcfgContainer [2021-10-29 04:55:41,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:55:41,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:55:41,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:55:41,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:55:41,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:55:40" (1/3) ... [2021-10-29 04:55:41,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b356d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:55:41, skipping insertion in model container [2021-10-29 04:55:41,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:40" (2/3) ... [2021-10-29 04:55:41,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b356d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:55:41, skipping insertion in model container [2021-10-29 04:55:41,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:55:41" (3/3) ... [2021-10-29 04:55:41,421 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1122b.c [2021-10-29 04:55:41,434 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:55:41,434 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:55:41,491 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:55:41,496 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:55:41,497 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 04:55:41,511 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.75) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:55:41,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 04:55:41,517 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:55:41,517 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:55:41,518 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:55:41,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:55:41,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2021166095, now seen corresponding path program 1 times [2021-10-29 04:55:41,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:55:41,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917574484] [2021-10-29 04:55:41,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:55:41,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:55:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:55:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:55:41,685 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:55:41,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917574484] [2021-10-29 04:55:41,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917574484] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:55:41,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:55:41,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:55:41,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273697460] [2021-10-29 04:55:41,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 04:55:41,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:55:41,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 04:55:41,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:55:41,718 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.75) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:55:41,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:55:41,735 INFO L93 Difference]: Finished difference Result 67 states and 111 transitions. [2021-10-29 04:55:41,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 04:55:41,737 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 04:55:41,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:55:41,745 INFO L225 Difference]: With dead ends: 67 [2021-10-29 04:55:41,745 INFO L226 Difference]: Without dead ends: 32 [2021-10-29 04:55:41,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:55:41,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-29 04:55:41,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-29 04:55:41,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 31 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:55:41,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 44 transitions. [2021-10-29 04:55:41,779 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 44 transitions. Word has length 8 [2021-10-29 04:55:41,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:55:41,780 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 44 transitions. [2021-10-29 04:55:41,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:55:41,780 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2021-10-29 04:55:41,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:55:41,781 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:55:41,781 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:55:41,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:55:41,782 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:55:41,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:55:41,785 INFO L85 PathProgramCache]: Analyzing trace with hash 342564116, now seen corresponding path program 1 times [2021-10-29 04:55:41,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:55:41,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662388817] [2021-10-29 04:55:41,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:55:41,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:55:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:55:41,922 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:55:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:55:42,008 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 04:55:42,008 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:55:42,010 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:55:42,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 04:55:42,015 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-29 04:55:42,018 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:55:42,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:55:42 BoogieIcfgContainer [2021-10-29 04:55:42,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:55:42,041 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:55:42,042 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:55:42,042 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:55:42,042 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:55:41" (3/4) ... [2021-10-29 04:55:42,045 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 04:55:42,045 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:55:42,048 INFO L168 Benchmark]: Toolchain (without parser) took 1737.77 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 63.8 MB in the beginning and 75.1 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2021-10-29 04:55:42,049 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory is still 47.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:55:42,051 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.26 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 63.6 MB in the beginning and 87.8 MB in the end (delta: -24.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:55:42,053 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.79 ms. Allocated memory is still 113.2 MB. Free memory was 87.8 MB in the beginning and 85.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:55:42,058 INFO L168 Benchmark]: Boogie Preprocessor took 71.81 ms. Allocated memory is still 113.2 MB. Free memory was 85.8 MB in the beginning and 84.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:55:42,059 INFO L168 Benchmark]: RCFGBuilder took 627.97 ms. Allocated memory is still 113.2 MB. Free memory was 84.1 MB in the beginning and 66.3 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:55:42,059 INFO L168 Benchmark]: TraceAbstraction took 629.30 ms. Allocated memory is still 113.2 MB. Free memory was 65.7 MB in the beginning and 75.7 MB in the end (delta: -10.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:55:42,060 INFO L168 Benchmark]: Witness Printer took 4.41 ms. Allocated memory is still 113.2 MB. Free memory was 75.7 MB in the beginning and 75.1 MB in the end (delta: 556.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:55:42,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory is still 47.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.26 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 63.6 MB in the beginning and 87.8 MB in the end (delta: -24.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.79 ms. Allocated memory is still 113.2 MB. Free memory was 87.8 MB in the beginning and 85.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.81 ms. Allocated memory is still 113.2 MB. Free memory was 85.8 MB in the beginning and 84.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 627.97 ms. Allocated memory is still 113.2 MB. Free memory was 84.1 MB in the beginning and 66.3 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 629.30 ms. Allocated memory is still 113.2 MB. Free memory was 65.7 MB in the beginning and 75.7 MB in the end (delta: -10.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.41 ms. Allocated memory is still 113.2 MB. Free memory was 75.7 MB in the beginning and 75.1 MB in the end (delta: 556.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 125]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 110, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseXor at line 33. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L119] float x = -1.0f / 0.0f; [L120] float y = __VERIFIER_nondet_float(); [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [one_fmod=1, Zero_fmod={9:0}] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L121] float res = fmod_float(x, y); [L110] return x != x; [L124] COND TRUE !isnan_float(res) [L125] reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 04:55:42,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:55:44,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:55:44,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:55:44,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:55:44,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:55:44,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:55:44,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:55:44,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:55:44,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:55:44,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:55:44,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:55:44,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:55:44,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:55:44,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:55:44,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:55:44,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:55:44,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:55:44,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:55:44,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:55:44,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:55:44,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:55:44,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:55:44,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:55:44,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:55:44,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:55:44,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:55:44,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:55:44,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:55:44,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:55:44,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:55:44,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:55:44,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:55:44,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:55:44,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:55:44,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:55:44,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:55:44,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:55:44,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:55:44,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:55:44,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:55:44,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:55:44,648 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 04:55:44,690 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:55:44,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:55:44,692 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:55:44,692 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:55:44,692 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:55:44,693 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:55:44,693 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:55:44,693 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:55:44,693 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:55:44,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:55:44,696 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:55:44,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:55:44,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:55:44,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:55:44,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:55:44,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:55:44,697 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:55:44,698 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 04:55:44,698 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 04:55:44,698 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:55:44,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:55:44,699 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:55:44,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:55:44,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:55:44,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 04:55:44,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:55:44,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:55:44,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:55:44,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:55:44,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:55:44,701 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 04:55:44,701 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 04:55:44,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:55:44,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:55:44,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:55:44,702 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 531a1139fb1df73d7771aceceeca279cd2242c70bbd9f853f2d0e457d633cadc [2021-10-29 04:55:45,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:55:45,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:55:45,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:55:45,126 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:55:45,127 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:55:45,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-newlib/float_req_bl_1122b.c [2021-10-29 04:55:45,214 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/data/4f4182915/450c9848dab84c198b6925f784c23cda/FLAG77e9a67d6 [2021-10-29 04:55:45,703 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:55:45,704 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/sv-benchmarks/c/float-newlib/float_req_bl_1122b.c [2021-10-29 04:55:45,711 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/data/4f4182915/450c9848dab84c198b6925f784c23cda/FLAG77e9a67d6 [2021-10-29 04:55:46,084 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/data/4f4182915/450c9848dab84c198b6925f784c23cda [2021-10-29 04:55:46,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:55:46,088 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:55:46,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:55:46,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:55:46,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:55:46,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:55:46" (1/1) ... [2021-10-29 04:55:46,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60dc3ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:46, skipping insertion in model container [2021-10-29 04:55:46,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:55:46" (1/1) ... [2021-10-29 04:55:46,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:55:46,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:55:46,350 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/sv-benchmarks/c/float-newlib/float_req_bl_1122b.c[2726,2739] [2021-10-29 04:55:46,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:55:46,364 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:55:46,436 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/sv-benchmarks/c/float-newlib/float_req_bl_1122b.c[2726,2739] [2021-10-29 04:55:46,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:55:46,467 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:55:46,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:46 WrapperNode [2021-10-29 04:55:46,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:55:46,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:55:46,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:55:46,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:55:46,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:46" (1/1) ... [2021-10-29 04:55:46,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:46" (1/1) ... [2021-10-29 04:55:46,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:55:46,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:55:46,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:55:46,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:55:46,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:46" (1/1) ... [2021-10-29 04:55:46,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:46" (1/1) ... [2021-10-29 04:55:46,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:46" (1/1) ... [2021-10-29 04:55:46,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:46" (1/1) ... [2021-10-29 04:55:46,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:46" (1/1) ... [2021-10-29 04:55:46,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:46" (1/1) ... [2021-10-29 04:55:46,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:46" (1/1) ... [2021-10-29 04:55:46,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:55:46,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:55:46,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:55:46,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:55:46,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:46" (1/1) ... [2021-10-29 04:55:46,613 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:55:46,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:55:46,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:55:46,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:55:46,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-10-29 04:55:46,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 04:55:46,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:55:46,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-29 04:55:46,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-29 04:55:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:55:46,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:55:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-29 04:55:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-29 04:55:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 04:55:49,424 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:55:49,424 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-10-29 04:55:49,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:55:49 BoogieIcfgContainer [2021-10-29 04:55:49,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:55:49,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:55:49,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:55:49,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:55:49,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:55:46" (1/3) ... [2021-10-29 04:55:49,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73bf82ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:55:49, skipping insertion in model container [2021-10-29 04:55:49,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:46" (2/3) ... [2021-10-29 04:55:49,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73bf82ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:55:49, skipping insertion in model container [2021-10-29 04:55:49,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:55:49" (3/3) ... [2021-10-29 04:55:49,435 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1122b.c [2021-10-29 04:55:49,440 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:55:49,441 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:55:49,489 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:55:49,496 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:55:49,496 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 04:55:49,511 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 40 states have (on average 1.75) internal successors, (70), 41 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:55:49,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:55:49,516 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:55:49,517 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:55:49,517 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:55:49,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:55:49,523 INFO L85 PathProgramCache]: Analyzing trace with hash 666555284, now seen corresponding path program 1 times [2021-10-29 04:55:49,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:55:49,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078052407] [2021-10-29 04:55:49,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:55:49,536 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:55:49,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:55:49,542 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:55:49,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 04:55:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:55:49,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 04:55:49,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:55:50,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:55:50,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:55:50,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:55:50,101 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:55:50,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078052407] [2021-10-29 04:55:50,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078052407] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:55:50,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:55:50,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 04:55:50,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782479353] [2021-10-29 04:55:50,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 04:55:50,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:55:50,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 04:55:50,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:55:50,125 INFO L87 Difference]: Start difference. First operand has 42 states, 40 states have (on average 1.75) internal successors, (70), 41 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:55:50,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:55:50,144 INFO L93 Difference]: Finished difference Result 82 states and 138 transitions. [2021-10-29 04:55:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 04:55:50,146 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 04:55:50,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:55:50,155 INFO L225 Difference]: With dead ends: 82 [2021-10-29 04:55:50,155 INFO L226 Difference]: Without dead ends: 39 [2021-10-29 04:55:50,158 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:55:50,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-29 04:55:50,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-29 04:55:50,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 38 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:55:50,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2021-10-29 04:55:50,187 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 10 [2021-10-29 04:55:50,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:55:50,188 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2021-10-29 04:55:50,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:55:50,188 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2021-10-29 04:55:50,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 04:55:50,189 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:55:50,189 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:55:50,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-29 04:55:50,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:55:50,398 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:55:50,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:55:50,400 INFO L85 PathProgramCache]: Analyzing trace with hash 131116369, now seen corresponding path program 1 times [2021-10-29 04:55:50,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:55:50,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396766020] [2021-10-29 04:55:50,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:55:50,402 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:55:50,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:55:50,403 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:55:50,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 04:55:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:55:50,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-29 04:55:50,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:55:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:55:54,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:56:01,223 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode c_ULTIMATE.start_fmod_float_~x ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2021-10-29 04:56:22,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:22,309 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:56:22,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396766020] [2021-10-29 04:56:22,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396766020] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:56:22,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:56:22,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-29 04:56:22,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87109627] [2021-10-29 04:56:22,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-29 04:56:22,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:56:22,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-29 04:56:22,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2021-10-29 04:56:22,314 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:24,610 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode c_ULTIMATE.start_fmod_float_~x ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) (= c_ULTIMATE.start_fmod_float_~x (fp.div c_currentRoundingMode (fp.neg ((_ to_fp 8 24) c_currentRoundingMode 1.0)) (_ +zero 8 24))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-29 04:56:29,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:56:29,645 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2021-10-29 04:56:29,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 04:56:29,646 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-29 04:56:29,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:56:29,647 INFO L225 Difference]: With dead ends: 44 [2021-10-29 04:56:29,647 INFO L226 Difference]: Without dead ends: 39 [2021-10-29 04:56:29,649 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=41, Invalid=97, Unknown=2, NotChecked=42, Total=182 [2021-10-29 04:56:29,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-29 04:56:29,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-29 04:56:29,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.394736842105263) internal successors, (53), 38 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:29,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2021-10-29 04:56:29,658 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 12 [2021-10-29 04:56:29,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:56:29,658 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2021-10-29 04:56:29,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:29,659 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2021-10-29 04:56:29,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 04:56:29,660 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:56:29,660 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:56:29,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:56:29,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:56:29,862 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:56:29,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:56:29,865 INFO L85 PathProgramCache]: Analyzing trace with hash -302456811, now seen corresponding path program 1 times [2021-10-29 04:56:29,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:56:29,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782340091] [2021-10-29 04:56:29,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:29,866 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:56:29,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:56:29,868 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:56:29,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 04:56:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:56:30,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 04:56:30,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:56:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:30,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:56:30,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:30,690 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:56:30,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782340091] [2021-10-29 04:56:30,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782340091] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:56:30,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:56:30,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-29 04:56:30,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602606916] [2021-10-29 04:56:30,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 04:56:30,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:56:30,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 04:56:30,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-29 04:56:30,693 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:30,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:56:30,897 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2021-10-29 04:56:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:56:30,898 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-29 04:56:30,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:56:30,898 INFO L225 Difference]: With dead ends: 39 [2021-10-29 04:56:30,899 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 04:56:30,899 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-29 04:56:30,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 04:56:30,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 04:56:30,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:30,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 04:56:30,900 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-29 04:56:30,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:56:30,900 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 04:56:30,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:30,901 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 04:56:30,901 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 04:56:30,903 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:56:30,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 04:56:31,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:56:31,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 04:56:31,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:31,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:31,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:31,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:31,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:31,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:31,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:31,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:31,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:31,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:33,927 INFO L857 garLoopResultBuilder]: For program point L27(lines 27 31) no Hoare annotation was computed. [2021-10-29 04:56:33,927 INFO L857 garLoopResultBuilder]: For program point L60-1(lines 60 65) no Hoare annotation was computed. [2021-10-29 04:56:33,927 INFO L857 garLoopResultBuilder]: For program point L27-1(lines 19 107) no Hoare annotation was computed. [2021-10-29 04:56:33,928 INFO L857 garLoopResultBuilder]: For program point L27-2(lines 27 31) no Hoare annotation was computed. [2021-10-29 04:56:33,928 INFO L853 garLoopResultBuilder]: At program point L110(line 110) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmod_float_#res| |ULTIMATE.start_fmod_float_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) [2021-10-29 04:56:33,928 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 75) no Hoare annotation was computed. [2021-10-29 04:56:33,928 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-10-29 04:56:33,928 INFO L853 garLoopResultBuilder]: At program point L69-2(lines 67 76) the Hoare annotation is: false [2021-10-29 04:56:33,929 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 04:56:33,929 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-29 04:56:33,929 INFO L857 garLoopResultBuilder]: For program point L78(lines 78 80) no Hoare annotation was computed. [2021-10-29 04:56:33,929 INFO L857 garLoopResultBuilder]: For program point L78-2(lines 19 107) no Hoare annotation was computed. [2021-10-29 04:56:33,929 INFO L857 garLoopResultBuilder]: For program point L54-1(lines 19 107) no Hoare annotation was computed. [2021-10-29 04:56:33,929 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 39) no Hoare annotation was computed. [2021-10-29 04:56:33,930 INFO L860 garLoopResultBuilder]: At program point L129(lines 112 130) the Hoare annotation is: true [2021-10-29 04:56:33,930 INFO L857 garLoopResultBuilder]: For program point L88(lines 88 105) no Hoare annotation was computed. [2021-10-29 04:56:33,930 INFO L857 garLoopResultBuilder]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2021-10-29 04:56:33,930 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 22 26) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmod_float_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))))) [2021-10-29 04:56:33,930 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 73) no Hoare annotation was computed. [2021-10-29 04:56:33,931 INFO L857 garLoopResultBuilder]: For program point L48(lines 19 107) no Hoare annotation was computed. [2021-10-29 04:56:33,931 INFO L853 garLoopResultBuilder]: At program point L106(lines 19 107) the Hoare annotation is: (not (fp.eq |ULTIMATE.start_fmod_float_#res| |ULTIMATE.start_fmod_float_#res|)) [2021-10-29 04:56:33,931 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-10-29 04:56:33,931 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-29 04:56:33,931 INFO L857 garLoopResultBuilder]: For program point L90-1(lines 90 94) no Hoare annotation was computed. [2021-10-29 04:56:33,932 INFO L853 garLoopResultBuilder]: At program point L90-2(lines 90 94) the Hoare annotation is: false [2021-10-29 04:56:33,932 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 125) no Hoare annotation was computed. [2021-10-29 04:56:33,932 INFO L857 garLoopResultBuilder]: For program point L49-2(lines 49 50) no Hoare annotation was computed. [2021-10-29 04:56:33,932 INFO L853 garLoopResultBuilder]: At program point L49-3(lines 49 50) the Hoare annotation is: false [2021-10-29 04:56:33,932 INFO L857 garLoopResultBuilder]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2021-10-29 04:56:33,932 INFO L853 garLoopResultBuilder]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2021-10-29 04:56:33,933 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 04:56:33,933 INFO L857 garLoopResultBuilder]: For program point L99-3(lines 99 103) no Hoare annotation was computed. [2021-10-29 04:56:33,933 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 127) no Hoare annotation was computed. [2021-10-29 04:56:33,933 INFO L857 garLoopResultBuilder]: For program point L42(lines 42 46) no Hoare annotation was computed. [2021-10-29 04:56:33,934 INFO L857 garLoopResultBuilder]: For program point L42-1(lines 19 107) no Hoare annotation was computed. [2021-10-29 04:56:33,935 INFO L857 garLoopResultBuilder]: For program point L67-1(lines 67 76) no Hoare annotation was computed. [2021-10-29 04:56:33,935 INFO L857 garLoopResultBuilder]: For program point L67-3(lines 67 76) no Hoare annotation was computed. [2021-10-29 04:56:33,935 INFO L857 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-10-29 04:56:33,935 INFO L853 garLoopResultBuilder]: At program point L84-2(lines 84 87) the Hoare annotation is: false [2021-10-29 04:56:33,936 INFO L857 garLoopResultBuilder]: For program point L84-3(lines 19 107) no Hoare annotation was computed. [2021-10-29 04:56:33,936 INFO L857 garLoopResultBuilder]: For program point L43-2(lines 43 44) no Hoare annotation was computed. [2021-10-29 04:56:33,936 INFO L853 garLoopResultBuilder]: At program point L43-3(lines 43 44) the Hoare annotation is: false [2021-10-29 04:56:33,940 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-29 04:56:33,942 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:56:33,955 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 04:56:33,957 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-29 04:56:33,957 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-29 04:56:33,958 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 04:56:33,959 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-29 04:56:33,959 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-29 04:56:33,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:56:33 BoogieIcfgContainer [2021-10-29 04:56:33,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:56:33,961 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:56:33,961 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:56:33,962 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:56:33,962 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:55:49" (3/4) ... [2021-10-29 04:56:33,966 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 04:56:33,979 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-29 04:56:33,980 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-29 04:56:33,980 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 04:56:33,980 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 04:56:34,010 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)), ~Pluszero~LONGDOUBLE())) [2021-10-29 04:56:34,023 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:56:34,023 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:56:34,025 INFO L168 Benchmark]: Toolchain (without parser) took 47935.17 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 47.3 MB in the beginning and 48.1 MB in the end (delta: -767.1 kB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:34,026 INFO L168 Benchmark]: CDTParser took 0.97 ms. Allocated memory is still 81.8 MB. Free memory was 63.9 MB in the beginning and 63.7 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:56:34,026 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.01 ms. Allocated memory is still 81.8 MB. Free memory was 47.1 MB in the beginning and 64.2 MB in the end (delta: -17.1 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:34,027 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.01 ms. Allocated memory is still 81.8 MB. Free memory was 64.2 MB in the beginning and 62.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:34,028 INFO L168 Benchmark]: Boogie Preprocessor took 87.83 ms. Allocated memory is still 81.8 MB. Free memory was 62.1 MB in the beginning and 60.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:34,029 INFO L168 Benchmark]: RCFGBuilder took 2820.67 ms. Allocated memory is still 81.8 MB. Free memory was 60.3 MB in the beginning and 44.3 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:34,029 INFO L168 Benchmark]: TraceAbstraction took 44532.09 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 44.0 MB in the beginning and 50.8 MB in the end (delta: -6.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:34,030 INFO L168 Benchmark]: Witness Printer took 61.89 ms. Allocated memory is still 98.6 MB. Free memory was 50.8 MB in the beginning and 48.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:34,034 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.97 ms. Allocated memory is still 81.8 MB. Free memory was 63.9 MB in the beginning and 63.7 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 371.01 ms. Allocated memory is still 81.8 MB. Free memory was 47.1 MB in the beginning and 64.2 MB in the end (delta: -17.1 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.01 ms. Allocated memory is still 81.8 MB. Free memory was 64.2 MB in the beginning and 62.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 87.83 ms. Allocated memory is still 81.8 MB. Free memory was 62.1 MB in the beginning and 60.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2820.67 ms. Allocated memory is still 81.8 MB. Free memory was 60.3 MB in the beginning and 44.3 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 44532.09 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 44.0 MB in the beginning and 50.8 MB in the end (delta: -6.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Witness Printer took 61.89 ms. Allocated memory is still 98.6 MB. Free memory was 50.8 MB in the beginning and 48.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 125]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 44.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.8s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 12 SDslu, 262 SDs, 0 SdLazy, 40 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 12.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 33 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 32 FormulaSimplificationTreeSizeReductionInter, 2.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 32.4s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 14 QuantifiedInterpolants, 449 SizeOfPredicates, 19 NumberOfNonLiveVariables, 188 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 110]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(\result, \result) && 1bv32 == \result - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 112]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant [2021-10-29 04:56:34,048 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 04:56:34,048 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-29 04:56:34,048 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-29 04:56:34,049 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 04:56:34,049 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-29 04:56:34,049 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(\result, \result) RESULT: Ultimate proved your program to be correct! [2021-10-29 04:56:34,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c5de4e-6ac7-4b5f-a9ed-d1f390409445/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...