./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float20.i --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_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/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_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/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_9dd88fef-dc02-467e-bc6e-cc2bea416849/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 ebbeb933faa53c0420039d774ec4b6190cacf1becebc5ed29363e09aaa5dc31e ............................................................................................................................................................................................................................................................. 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_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/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_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/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_9dd88fef-dc02-467e-bc6e-cc2bea416849/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 ebbeb933faa53c0420039d774ec4b6190cacf1becebc5ed29363e09aaa5dc31e ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 05:10:01,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:10:01,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:10:01,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:10:01,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:10:01,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:10:01,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:10:01,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:10:01,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:10:01,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:10:01,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:10:01,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:10:01,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:10:01,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:10:01,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:10:01,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:10:01,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:10:01,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:10:01,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:10:01,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:10:01,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:10:01,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:10:01,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:10:01,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:10:01,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:10:01,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:10:01,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:10:01,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:10:01,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:10:01,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:10:01,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:10:01,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:10:01,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:10:01,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:10:01,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:10:01,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:10:01,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:10:01,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:10:01,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:10:01,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:10:01,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:10:01,132 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:10:01,170 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:10:01,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:10:01,175 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:10:01,176 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:10:01,176 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:10:01,176 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:10:01,177 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:10:01,177 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:10:01,177 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:10:01,177 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:10:01,178 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:10:01,179 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:10:01,179 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:10:01,179 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:10:01,180 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:10:01,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:10:01,181 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:10:01,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:10:01,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:10:01,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:10:01,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:10:01,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:10:01,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:10:01,182 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:10:01,183 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:10:01,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:10:01,183 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:10:01,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:10:01,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:10:01,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:10:01,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:10:01,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:10:01,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:10:01,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:10:01,187 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:10:01,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:10:01,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:10:01,188 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:10:01,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:10:01,188 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_9dd88fef-dc02-467e-bc6e-cc2bea416849/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebbeb933faa53c0420039d774ec4b6190cacf1becebc5ed29363e09aaa5dc31e [2021-10-29 05:10:01,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:10:01,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:10:01,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:10:01,523 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:10:01,524 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:10:01,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/floats-cbmc-regression/float20.i [2021-10-29 05:10:01,615 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/data/efcd33548/c9ee477875874ddca8819ccb118b32b2/FLAGb1347e15d [2021-10-29 05:10:02,194 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:10:02,194 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/sv-benchmarks/c/floats-cbmc-regression/float20.i [2021-10-29 05:10:02,202 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/data/efcd33548/c9ee477875874ddca8819ccb118b32b2/FLAGb1347e15d [2021-10-29 05:10:02,548 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/data/efcd33548/c9ee477875874ddca8819ccb118b32b2 [2021-10-29 05:10:02,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:10:02,553 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:10:02,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:10:02,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:10:02,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:10:02,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:10:02" (1/1) ... [2021-10-29 05:10:02,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ffbefbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:02, skipping insertion in model container [2021-10-29 05:10:02,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:10:02" (1/1) ... [2021-10-29 05:10:02,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:10:02,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:10:02,780 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_9dd88fef-dc02-467e-bc6e-cc2bea416849/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2021-10-29 05:10:02,792 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_9dd88fef-dc02-467e-bc6e-cc2bea416849/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2021-10-29 05:10:02,798 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_9dd88fef-dc02-467e-bc6e-cc2bea416849/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2021-10-29 05:10:02,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:10:02,809 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:10:02,823 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_9dd88fef-dc02-467e-bc6e-cc2bea416849/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2021-10-29 05:10:02,828 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_9dd88fef-dc02-467e-bc6e-cc2bea416849/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2021-10-29 05:10:02,832 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_9dd88fef-dc02-467e-bc6e-cc2bea416849/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2021-10-29 05:10:02,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:10:02,847 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:10:02,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:02 WrapperNode [2021-10-29 05:10:02,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:10:02,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:10:02,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:10:02,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:10:02,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:02" (1/1) ... [2021-10-29 05:10:02,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:02" (1/1) ... [2021-10-29 05:10:02,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:10:02,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:10:02,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:10:02,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:10:02,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:02" (1/1) ... [2021-10-29 05:10:02,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:02" (1/1) ... [2021-10-29 05:10:02,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:02" (1/1) ... [2021-10-29 05:10:02,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:02" (1/1) ... [2021-10-29 05:10:02,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:02" (1/1) ... [2021-10-29 05:10:02,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:02" (1/1) ... [2021-10-29 05:10:02,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:02" (1/1) ... [2021-10-29 05:10:02,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:10:02,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:10:02,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:10:02,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:10:02,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:02" (1/1) ... [2021-10-29 05:10:02,915 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:10:02,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:10:02,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:10:02,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:10:02,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:10:02,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:10:02,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:10:02,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:10:03,280 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:10:03,281 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-29 05:10:03,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:10:03 BoogieIcfgContainer [2021-10-29 05:10:03,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:10:03,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:10:03,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:10:03,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:10:03,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:10:02" (1/3) ... [2021-10-29 05:10:03,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1d42f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:10:03, skipping insertion in model container [2021-10-29 05:10:03,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:02" (2/3) ... [2021-10-29 05:10:03,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1d42f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:10:03, skipping insertion in model container [2021-10-29 05:10:03,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:10:03" (3/3) ... [2021-10-29 05:10:03,316 INFO L111 eAbstractionObserver]: Analyzing ICFG float20.i [2021-10-29 05:10:03,321 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:10:03,324 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-29 05:10:03,423 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:10:03,435 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 05:10:03,435 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-29 05:10:03,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 10 states have (on average 1.6) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:10:03,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:10:03,461 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:10:03,461 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:10:03,462 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:10:03,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:10:03,474 INFO L85 PathProgramCache]: Analyzing trace with hash 89758, now seen corresponding path program 1 times [2021-10-29 05:10:03,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:10:03,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987264812] [2021-10-29 05:10:03,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:10:03,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:10:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:10:03,632 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:10:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:10:03,702 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:10:03,705 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:10:03,706 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:10:03,709 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:10:03,709 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:10:03,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:10:03,714 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:10:03,717 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:10:03,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:10:03 BoogieIcfgContainer [2021-10-29 05:10:03,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:10:03,743 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:10:03,743 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:10:03,744 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:10:03,745 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:10:03" (3/4) ... [2021-10-29 05:10:03,773 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:10:03,774 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:10:03,776 INFO L168 Benchmark]: Toolchain (without parser) took 1222.01 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 72.4 MB in the beginning and 102.2 MB in the end (delta: -29.8 MB). Peak memory consumption was 26.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:10:03,777 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 104.9 MB. Free memory is still 59.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:10:03,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.67 ms. Allocated memory is still 104.9 MB. Free memory was 72.2 MB in the beginning and 77.7 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:10:03,780 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.48 ms. Allocated memory is still 104.9 MB. Free memory was 77.4 MB in the beginning and 76.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:10:03,782 INFO L168 Benchmark]: Boogie Preprocessor took 25.36 ms. Allocated memory is still 104.9 MB. Free memory was 76.0 MB in the beginning and 75.0 MB in the end (delta: 979.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:10:03,785 INFO L168 Benchmark]: RCFGBuilder took 376.71 ms. Allocated memory is still 104.9 MB. Free memory was 75.0 MB in the beginning and 63.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:10:03,791 INFO L168 Benchmark]: TraceAbstraction took 431.07 ms. Allocated memory is still 104.9 MB. Free memory was 62.7 MB in the beginning and 49.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:10:03,791 INFO L168 Benchmark]: Witness Printer took 30.61 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 49.9 MB in the beginning and 102.2 MB in the end (delta: -52.4 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:10:03,798 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 104.9 MB. Free memory is still 59.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.67 ms. Allocated memory is still 104.9 MB. Free memory was 72.2 MB in the beginning and 77.7 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.48 ms. Allocated memory is still 104.9 MB. Free memory was 77.4 MB in the beginning and 76.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.36 ms. Allocated memory is still 104.9 MB. Free memory was 76.0 MB in the beginning and 75.0 MB in the end (delta: 979.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 376.71 ms. Allocated memory is still 104.9 MB. Free memory was 75.0 MB in the beginning and 63.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 431.07 ms. Allocated memory is still 104.9 MB. Free memory was 62.7 MB in the beginning and 49.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 30.61 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 49.9 MB in the beginning and 102.2 MB in the end (delta: -52.4 MB). Peak memory consumption was 6.2 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: 21]: 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 21, overapproximation of someBinaryArithmeticDOUBLEoperation at line 18, overapproximation of someBinaryArithmeticFLOAToperation at line 19. Possible FailurePath: [L48] float f=__VERIFIER_nondet_float(); [L17] COND FALSE !(!(min == 0x1.fffffep-105f)) [L18] float modifier = (0x1.0p-23 * (1<<1)); [L19] float ulpdiff = min * modifier; [L21] COND TRUE !(ulpdiff == 0x1p-126f) [L21] reach_error() - UnprovableResult [Line: 32]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 05:10:03,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/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 05:10:06,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:10:06,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:10:06,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:10:06,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:10:06,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:10:06,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:10:06,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:10:06,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:10:06,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:10:06,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:10:06,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:10:06,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:10:06,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:10:06,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:10:06,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:10:06,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:10:06,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:10:06,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:10:06,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:10:06,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:10:06,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:10:06,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:10:06,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:10:06,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:10:06,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:10:06,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:10:06,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:10:06,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:10:06,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:10:06,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:10:06,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:10:06,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:10:06,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:10:06,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:10:06,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:10:06,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:10:06,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:10:06,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:10:06,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:10:06,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:10:06,455 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:10:06,481 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:10:06,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:10:06,482 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:10:06,482 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:10:06,483 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:10:06,483 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:10:06,483 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:10:06,483 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:10:06,483 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:10:06,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:10:06,485 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:10:06,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:10:06,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:10:06,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:10:06,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:10:06,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:10:06,486 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:10:06,486 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:10:06,486 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:10:06,486 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:10:06,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:10:06,487 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:10:06,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:10:06,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:10:06,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:10:06,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:10:06,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:10:06,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:10:06,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:10:06,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:10:06,489 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:10:06,489 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:10:06,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:10:06,489 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:10:06,490 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:10:06,490 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_9dd88fef-dc02-467e-bc6e-cc2bea416849/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebbeb933faa53c0420039d774ec4b6190cacf1becebc5ed29363e09aaa5dc31e [2021-10-29 05:10:06,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:10:06,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:10:06,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:10:06,921 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:10:06,922 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:10:06,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/floats-cbmc-regression/float20.i [2021-10-29 05:10:06,993 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/data/7a915ce02/e0e2a5b639c54cdf9a24d3afef1ef39c/FLAG3e41a74f7 [2021-10-29 05:10:07,578 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:10:07,579 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/sv-benchmarks/c/floats-cbmc-regression/float20.i [2021-10-29 05:10:07,590 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/data/7a915ce02/e0e2a5b639c54cdf9a24d3afef1ef39c/FLAG3e41a74f7 [2021-10-29 05:10:07,936 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/data/7a915ce02/e0e2a5b639c54cdf9a24d3afef1ef39c [2021-10-29 05:10:07,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:10:07,948 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:10:07,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:10:07,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:10:07,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:10:07,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:10:07" (1/1) ... [2021-10-29 05:10:07,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f3d165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:07, skipping insertion in model container [2021-10-29 05:10:07,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:10:07" (1/1) ... [2021-10-29 05:10:07,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:10:07,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:10:08,143 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_9dd88fef-dc02-467e-bc6e-cc2bea416849/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2021-10-29 05:10:08,156 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_9dd88fef-dc02-467e-bc6e-cc2bea416849/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2021-10-29 05:10:08,163 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_9dd88fef-dc02-467e-bc6e-cc2bea416849/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2021-10-29 05:10:08,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:10:08,198 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:10:08,268 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_9dd88fef-dc02-467e-bc6e-cc2bea416849/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2021-10-29 05:10:08,279 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_9dd88fef-dc02-467e-bc6e-cc2bea416849/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2021-10-29 05:10:08,285 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_9dd88fef-dc02-467e-bc6e-cc2bea416849/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2021-10-29 05:10:08,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:10:08,318 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:10:08,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:08 WrapperNode [2021-10-29 05:10:08,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:10:08,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:10:08,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:10:08,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:10:08,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:08" (1/1) ... [2021-10-29 05:10:08,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:08" (1/1) ... [2021-10-29 05:10:08,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:10:08,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:10:08,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:10:08,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:10:08,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:08" (1/1) ... [2021-10-29 05:10:08,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:08" (1/1) ... [2021-10-29 05:10:08,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:08" (1/1) ... [2021-10-29 05:10:08,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:08" (1/1) ... [2021-10-29 05:10:08,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:08" (1/1) ... [2021-10-29 05:10:08,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:08" (1/1) ... [2021-10-29 05:10:08,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:08" (1/1) ... [2021-10-29 05:10:08,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:10:08,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:10:08,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:10:08,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:10:08,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:08" (1/1) ... [2021-10-29 05:10:08,445 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:10:08,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:10:08,478 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:10:08,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:10:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:10:08,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:10:08,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:10:08,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:10:10,995 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:10:10,996 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-29 05:10:10,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:10:10 BoogieIcfgContainer [2021-10-29 05:10:10,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:10:11,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:10:11,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:10:11,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:10:11,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:10:07" (1/3) ... [2021-10-29 05:10:11,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c50159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:10:11, skipping insertion in model container [2021-10-29 05:10:11,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:08" (2/3) ... [2021-10-29 05:10:11,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c50159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:10:11, skipping insertion in model container [2021-10-29 05:10:11,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:10:10" (3/3) ... [2021-10-29 05:10:11,006 INFO L111 eAbstractionObserver]: Analyzing ICFG float20.i [2021-10-29 05:10:11,011 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:10:11,012 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-29 05:10:11,061 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:10:11,069 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 05:10:11,069 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-29 05:10:11,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 22 states have internal predecessors, (28), 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 05:10:11,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:10:11,088 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:10:11,089 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:10:11,090 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:10:11,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:10:11,132 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-29 05:10:11,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:10:11,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301292780] [2021-10-29 05:10:11,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:10:11,160 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:10:11,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:10:11,174 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:10:11,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:10:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:10:11,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:10:11,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:10:11,363 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 05:10:11,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:10:11,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:10:11,391 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:10:11,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301292780] [2021-10-29 05:10:11,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301292780] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:10:11,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:10:11,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:10:11,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869039173] [2021-10-29 05:10:11,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:10:11,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:10:11,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:10:11,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:10:11,436 INFO L87 Difference]: Start difference. First operand has 23 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 05:10:11,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:10:11,455 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2021-10-29 05:10:11,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:10:11,458 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-10-29 05:10:11,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:10:11,468 INFO L225 Difference]: With dead ends: 43 [2021-10-29 05:10:11,468 INFO L226 Difference]: Without dead ends: 19 [2021-10-29 05:10:11,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 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 05:10:11,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-29 05:10:11,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-29 05:10:11,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:10:11,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2021-10-29 05:10:11,512 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 6 [2021-10-29 05:10:11,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:10:11,512 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2021-10-29 05:10:11,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 05:10:11,514 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2021-10-29 05:10:11,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:10:11,515 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:10:11,515 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:10:11,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:10:11,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:10:11,730 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:10:11,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:10:11,731 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-29 05:10:11,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:10:11,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213466221] [2021-10-29 05:10:11,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:10:11,732 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:10:11,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:10:11,735 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:10:11,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:10:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:10:11,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:10:11,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:10:12,583 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 05:10:12,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:10:14,416 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 05:10:14,417 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:10:14,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213466221] [2021-10-29 05:10:14,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213466221] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:10:14,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:10:14,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-29 05:10:14,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640470343] [2021-10-29 05:10:14,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:10:14,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:10:14,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:10:14,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:10:14,420 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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 05:10:18,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:10:18,195 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-10-29 05:10:18,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:10:18,200 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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 6 [2021-10-29 05:10:18,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:10:18,201 INFO L225 Difference]: With dead ends: 19 [2021-10-29 05:10:18,201 INFO L226 Difference]: Without dead ends: 17 [2021-10-29 05:10:18,202 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:10:18,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-29 05:10:18,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-29 05:10:18,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:10:18,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2021-10-29 05:10:18,206 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 6 [2021-10-29 05:10:18,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:10:18,206 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2021-10-29 05:10:18,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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 05:10:18,207 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2021-10-29 05:10:18,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:10:18,208 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:10:18,208 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:10:18,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:10:18,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:10:18,409 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:10:18,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:10:18,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1928169781, now seen corresponding path program 1 times [2021-10-29 05:10:18,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:10:18,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845740701] [2021-10-29 05:10:18,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:10:18,411 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:10:18,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:10:18,412 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:10:18,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:10:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:10:18,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:10:18,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:10:32,237 WARN L207 SmtUtils]: Spent 5.78 s on a formula simplification that was a NOOP. DAG size: 22 [2021-10-29 05:10:33,874 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 05:10:33,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:10:39,940 WARN L838 $PredicateComparison]: unable to prove that (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_bugBrokenOut_~min) ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8388608.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32))))))) ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0))) is different from false [2021-10-29 05:10:47,483 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_bugBrokenOut_~min (_ FloatingPoint 8 24))) (or (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ULTIMATE.start_bugBrokenOut_~min) ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8388608.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32))))))) ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0))) (not (fp.eq ULTIMATE.start_bugBrokenOut_~min ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 340282366920938463463374607431768211456.0)))))) is different from true [2021-10-29 05:11:14,608 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 05:11:14,608 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:11:14,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845740701] [2021-10-29 05:11:14,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845740701] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:11:14,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:11:14,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-29 05:11:14,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072071011] [2021-10-29 05:11:14,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:11:14,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:11:14,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:11:14,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=20, Unknown=2, NotChecked=18, Total=56 [2021-10-29 05:11:14,612 INFO L87 Difference]: Start difference. First operand 17 states and 16 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:11:32,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:11:32,259 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2021-10-29 05:11:32,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:11:32,296 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 05:11:32,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:11:32,297 INFO L225 Difference]: With dead ends: 17 [2021-10-29 05:11:32,297 INFO L226 Difference]: Without dead ends: 15 [2021-10-29 05:11:32,298 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=16, Invalid=20, Unknown=2, NotChecked=18, Total=56 [2021-10-29 05:11:32,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-29 05:11:32,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-29 05:11:32,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:11:32,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2021-10-29 05:11:32,302 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 10 [2021-10-29 05:11:32,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:11:32,303 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2021-10-29 05:11:32,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:11:32,303 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2021-10-29 05:11:32,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:11:32,304 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:11:32,304 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:11:32,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:11:32,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:11:32,508 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:11:32,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:11:32,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1162826544, now seen corresponding path program 1 times [2021-10-29 05:11:32,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:11:32,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753074366] [2021-10-29 05:11:32,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:11:32,511 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:11:32,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:11:32,512 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:11:32,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 05:11:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:11:32,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 05:11:32,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:11:34,162 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 05:11:34,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:11:40,162 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 05:11:40,163 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:11:40,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753074366] [2021-10-29 05:11:40,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753074366] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:11:40,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:11:40,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-29 05:11:40,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391391186] [2021-10-29 05:11:40,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:11:40,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:11:40,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:11:40,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:11:40,167 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:11:45,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:11:45,375 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2021-10-29 05:11:45,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:11:45,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-29 05:11:45,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:11:45,376 INFO L225 Difference]: With dead ends: 15 [2021-10-29 05:11:45,376 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:11:45,377 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:11:45,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:11:45,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:11:45,387 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 05:11:45,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:11:45,388 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-10-29 05:11:45,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:11:45,388 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:11:45,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:11:45,389 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:11:45,389 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:11:45,392 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:11:45,393 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:11:45,393 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:11:45,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:11:45,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:11:45,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:11:45,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:11:45,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:11:45,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:11:45,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:11:50,913 WARN L207 SmtUtils]: Spent 5.04 s on a formula simplification that was a NOOP. DAG size: 22 [2021-10-29 05:11:50,917 INFO L857 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2021-10-29 05:11:50,918 INFO L857 garLoopResultBuilder]: For program point L27-2(line 27) no Hoare annotation was computed. [2021-10-29 05:11:50,918 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 32) no Hoare annotation was computed. [2021-10-29 05:11:50,918 INFO L857 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-10-29 05:11:50,918 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-29 05:11:50,919 INFO L857 garLoopResultBuilder]: For program point L32-1(line 32) no Hoare annotation was computed. [2021-10-29 05:11:50,919 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:11:50,919 INFO L853 garLoopResultBuilder]: At program point L32-3(lines 26 35) the Hoare annotation is: (and (exists ((ULTIMATE.start_bugBrokenOut_~min (_ FloatingPoint 8 24))) (and (= ULTIMATE.start_bugBrokenOut_~ulpdiff~1 ((_ to_fp 8 24) currentRoundingMode (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_bugBrokenOut_~min) ((_ to_fp 11 53) currentRoundingMode ((_ to_fp 8 24) currentRoundingMode (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (/ 1.0 8388608.0)) ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)))))))) (fp.eq ULTIMATE.start_bugBrokenOut_~min ((_ to_fp 8 24) currentRoundingMode (/ 16777215.0 340282366920938463463374607431768211456.0))))) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-29 05:11:50,920 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-29 05:11:50,920 INFO L860 garLoopResultBuilder]: At program point L57(lines 47 58) the Hoare annotation is: true [2021-10-29 05:11:50,920 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-29 05:11:50,920 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:11:50,920 INFO L857 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-10-29 05:11:50,921 INFO L857 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2021-10-29 05:11:50,921 INFO L853 garLoopResultBuilder]: At program point L21-3(lines 16 24) the Hoare annotation is: (and (fp.eq ULTIMATE.start_bug_~min ((_ to_fp 8 24) currentRoundingMode (/ 16777215.0 340282366920938463463374607431768211456.0))) (exists ((ULTIMATE.start_bug_~min (_ FloatingPoint 8 24))) (and (fp.eq ULTIMATE.start_bug_~min ((_ to_fp 8 24) currentRoundingMode (/ 16777215.0 340282366920938463463374607431768211456.0))) (= ULTIMATE.start_bug_~ulpdiff~0 (fp.mul currentRoundingMode ULTIMATE.start_bug_~min ((_ to_fp 8 24) currentRoundingMode (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (/ 1.0 8388608.0)) ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)))))))) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-29 05:11:50,921 INFO L857 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-10-29 05:11:50,921 INFO L857 garLoopResultBuilder]: For program point L17-2(line 17) no Hoare annotation was computed. [2021-10-29 05:11:50,921 INFO L857 garLoopResultBuilder]: For program point L42(line 42) no Hoare annotation was computed. [2021-10-29 05:11:50,922 INFO L857 garLoopResultBuilder]: For program point L42-1(line 42) no Hoare annotation was computed. [2021-10-29 05:11:50,922 INFO L860 garLoopResultBuilder]: At program point L42-3(lines 37 45) the Hoare annotation is: true [2021-10-29 05:11:50,922 INFO L857 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-10-29 05:11:50,922 INFO L857 garLoopResultBuilder]: For program point L38-2(line 38) no Hoare annotation was computed. [2021-10-29 05:11:50,922 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2021-10-29 05:11:50,926 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-29 05:11:50,928 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:11:50,936 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2021-10-29 05:11:50,937 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2021-10-29 05:11:50,940 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 05:11:50,946 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2021-10-29 05:11:50,946 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2021-10-29 05:11:50,946 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 05:11:50,949 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] [2021-10-29 05:11:50,949 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] [2021-10-29 05:11:50,949 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 05:11:50,950 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] [2021-10-29 05:11:50,951 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] [2021-10-29 05:11:50,951 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 05:11:50,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:11:50 BoogieIcfgContainer [2021-10-29 05:11:50,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:11:50,953 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:11:50,953 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:11:50,954 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:11:50,954 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:10:10" (3/4) ... [2021-10-29 05:11:50,958 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:11:50,970 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-29 05:11:50,970 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-29 05:11:50,970 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:11:50,971 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:11:50,999 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.eq~DOUBLE(min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 16777215/340282366920938463463374607431768211456)) && (\exists ULTIMATE.start_bug_~min : C_FLOAT :: ~fp.eq~DOUBLE(ULTIMATE.start_bug_~min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 16777215/340282366920938463463374607431768211456)) && ulpdiff == ~fp.mul~FLOAT(unknown-currentRoundingMode-unknown, ULTIMATE.start_bug_~min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~fp.mul~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1/8388608), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2bv32)))))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-10-29 05:11:51,000 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists ULTIMATE.start_bugBrokenOut_~min : C_FLOAT :: ulpdiff == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~fp.mul~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ULTIMATE.start_bugBrokenOut_~min), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~fp.mul~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1/8388608), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2bv32)))))) && ~fp.eq~DOUBLE(ULTIMATE.start_bugBrokenOut_~min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 16777215/340282366920938463463374607431768211456))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-10-29 05:11:51,017 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:11:51,017 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:11:51,019 INFO L168 Benchmark]: Toolchain (without parser) took 103070.99 ms. Allocated memory was 69.2 MB in the beginning and 88.1 MB in the end (delta: 18.9 MB). Free memory was 53.3 MB in the beginning and 61.2 MB in the end (delta: -7.9 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:11:51,020 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 50.9 MB in the end (delta: 60.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:11:51,021 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.90 ms. Allocated memory is still 69.2 MB. Free memory was 53.2 MB in the beginning and 51.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:11:51,021 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.09 ms. Allocated memory is still 69.2 MB. Free memory was 51.0 MB in the beginning and 49.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:11:51,022 INFO L168 Benchmark]: Boogie Preprocessor took 52.77 ms. Allocated memory is still 69.2 MB. Free memory was 49.5 MB in the beginning and 48.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:11:51,022 INFO L168 Benchmark]: RCFGBuilder took 2562.15 ms. Allocated memory is still 69.2 MB. Free memory was 48.2 MB in the beginning and 38.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:11:51,023 INFO L168 Benchmark]: TraceAbstraction took 99953.01 ms. Allocated memory was 69.2 MB in the beginning and 88.1 MB in the end (delta: 18.9 MB). Free memory was 38.1 MB in the beginning and 63.9 MB in the end (delta: -25.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:11:51,024 INFO L168 Benchmark]: Witness Printer took 64.53 ms. Allocated memory is still 88.1 MB. Free memory was 63.9 MB in the beginning and 61.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:11:51,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 50.9 MB in the end (delta: 60.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 369.90 ms. Allocated memory is still 69.2 MB. Free memory was 53.2 MB in the beginning and 51.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.09 ms. Allocated memory is still 69.2 MB. Free memory was 51.0 MB in the beginning and 49.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.77 ms. Allocated memory is still 69.2 MB. Free memory was 49.5 MB in the beginning and 48.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2562.15 ms. Allocated memory is still 69.2 MB. Free memory was 48.2 MB in the beginning and 38.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 99953.01 ms. Allocated memory was 69.2 MB in the beginning and 88.1 MB in the end (delta: 18.9 MB). Free memory was 38.1 MB in the beginning and 63.9 MB in the end (delta: -25.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 64.53 ms. Allocated memory is still 88.1 MB. Free memory was 63.9 MB in the beginning and 61.2 MB in the end (delta: 2.8 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,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[ULTIMATE.start_bug_~min,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,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[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,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[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 32]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 42]: 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, 23 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 99.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 26.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 32 SDslu, 24 SDs, 0 SdLazy, 92 SolverSat, 0 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 15.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 31.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 65 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 5.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 65.9s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 64 ConstructedInterpolants, 21 QuantifiedInterpolants, 619 SizeOfPredicates, 15 NumberOfNonLiveVariables, 126 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 3 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant [2021-10-29 05:11:51,054 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2021-10-29 05:11:51,054 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2021-10-29 05:11:51,054 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 05:11:51,055 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2021-10-29 05:11:51,055 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2021-10-29 05:11:51,056 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (~fp.eq~DOUBLE(min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 16777215/340282366920938463463374607431768211456)) && (\exists ULTIMATE.start_bug_~min : C_FLOAT :: ~fp.eq~DOUBLE(ULTIMATE.start_bug_~min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 16777215/340282366920938463463374607431768211456)) && ulpdiff == ~fp.mul~FLOAT(unknown-currentRoundingMode-unknown, ULTIMATE.start_bug_~min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~fp.mul~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1/8388608), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2bv32)))))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 26]: Loop Invariant [2021-10-29 05:11:51,057 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] [2021-10-29 05:11:51,057 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] [2021-10-29 05:11:51,057 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 05:11:51,058 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] [2021-10-29 05:11:51,059 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] [2021-10-29 05:11:51,059 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (\exists ULTIMATE.start_bugBrokenOut_~min : C_FLOAT :: ulpdiff == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~fp.mul~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ULTIMATE.start_bugBrokenOut_~min), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~fp.mul~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1/8388608), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2bv32)))))) && ~fp.eq~DOUBLE(ULTIMATE.start_bugBrokenOut_~min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 16777215/340282366920938463463374607431768211456))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-29 05:11:51,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88fef-dc02-467e-bc6e-cc2bea416849/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...