./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/addsub_float_inexact.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/addsub_float_inexact.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs --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 6904bf6d43d7b400ac9a6f6c8ecd92ebae2bb440 ................................................................................................................................................................................................................................................. 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_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/addsub_float_inexact.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs --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 6904bf6d43d7b400ac9a6f6c8ecd92ebae2bb440 ............................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:49:20,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:49:20,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:49:21,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:49:21,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:49:21,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:49:21,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:49:21,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:49:21,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:49:21,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:49:21,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:49:21,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:49:21,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:49:21,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:49:21,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:49:21,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:49:21,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:49:21,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:49:21,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:49:21,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:49:21,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:49:21,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:49:21,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:49:21,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:49:21,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:49:21,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:49:21,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:49:21,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:49:21,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:49:21,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:49:21,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:49:21,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:49:21,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:49:21,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:49:21,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:49:21,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:49:21,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:49:21,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:49:21,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:49:21,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:49:21,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:49:21,078 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:49:21,111 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:49:21,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:49:21,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:49:21,112 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:49:21,113 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:49:21,113 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:49:21,113 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:49:21,113 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:49:21,114 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:49:21,114 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:49:21,114 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:49:21,114 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:49:21,115 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:49:21,115 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:49:21,115 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:49:21,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:49:21,117 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:49:21,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:49:21,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:49:21,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:49:21,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:49:21,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:49:21,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:49:21,118 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:49:21,118 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:49:21,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:49:21,119 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:49:21,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:49:21,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:49:21,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:49:21,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:49:21,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:49:21,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:49:21,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:49:21,121 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:49:21,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:49:21,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:49:21,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:49:21,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:49:21,122 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_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6904bf6d43d7b400ac9a6f6c8ecd92ebae2bb440 [2021-10-16 02:49:21,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:49:21,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:49:21,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:49:21,562 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:49:21,563 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:49:21,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2021-10-16 02:49:21,680 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/data/5871596e6/e0c24ca8b3384da5b02c8bf4f1eadccb/FLAG60db71996 [2021-10-16 02:49:22,286 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:49:22,287 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2021-10-16 02:49:22,303 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/data/5871596e6/e0c24ca8b3384da5b02c8bf4f1eadccb/FLAG60db71996 [2021-10-16 02:49:22,616 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/data/5871596e6/e0c24ca8b3384da5b02c8bf4f1eadccb [2021-10-16 02:49:22,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:49:22,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:49:22,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:49:22,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:49:22,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:49:22,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:49:22" (1/1) ... [2021-10-16 02:49:22,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d6d45ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:22, skipping insertion in model container [2021-10-16 02:49:22,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:49:22" (1/1) ... [2021-10-16 02:49:22,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:49:22,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:49:22,841 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_d08cc3d1-131d-4e1a-9070-4c52a1a76136/sv-benchmarks/c/float-benchs/addsub_float_inexact.c[394,407] [2021-10-16 02:49:22,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:49:22,866 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:49:22,908 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_d08cc3d1-131d-4e1a-9070-4c52a1a76136/sv-benchmarks/c/float-benchs/addsub_float_inexact.c[394,407] [2021-10-16 02:49:22,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:49:22,928 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:49:22,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:22 WrapperNode [2021-10-16 02:49:22,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:49:22,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:49:22,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:49:22,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:49:22,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:22" (1/1) ... [2021-10-16 02:49:22,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:22" (1/1) ... [2021-10-16 02:49:22,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:49:22,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:49:22,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:49:22,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:49:23,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:22" (1/1) ... [2021-10-16 02:49:23,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:22" (1/1) ... [2021-10-16 02:49:23,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:22" (1/1) ... [2021-10-16 02:49:23,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:22" (1/1) ... [2021-10-16 02:49:23,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:22" (1/1) ... [2021-10-16 02:49:23,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:22" (1/1) ... [2021-10-16 02:49:23,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:22" (1/1) ... [2021-10-16 02:49:23,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:49:23,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:49:23,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:49:23,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:49:23,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:22" (1/1) ... [2021-10-16 02:49:23,030 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:49:23,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:49:23,064 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:49:23,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:49:23,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:49:23,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:49:23,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:49:23,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:49:23,355 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:49:23,355 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-16 02:49:23,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:49:23 BoogieIcfgContainer [2021-10-16 02:49:23,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:49:23,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:49:23,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:49:23,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:49:23,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:49:22" (1/3) ... [2021-10-16 02:49:23,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f1dc1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:49:23, skipping insertion in model container [2021-10-16 02:49:23,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:22" (2/3) ... [2021-10-16 02:49:23,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f1dc1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:49:23, skipping insertion in model container [2021-10-16 02:49:23,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:49:23" (3/3) ... [2021-10-16 02:49:23,371 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_float_inexact.c [2021-10-16 02:49:23,378 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:49:23,379 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:49:23,437 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:49:23,448 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, mConcurrency=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 [2021-10-16 02:49:23,448 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:49:23,466 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2021-10-16 02:49:23,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 02:49:23,473 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:49:23,474 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 02:49:23,475 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:49:23,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:49:23,482 INFO L82 PathProgramCache]: Analyzing trace with hash 47251, now seen corresponding path program 1 times [2021-10-16 02:49:23,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:49:23,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742618003] [2021-10-16 02:49:23,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:49:23,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:49:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:49:23,631 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:49:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:49:23,680 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:49:23,683 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:49:23,685 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:49:23,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:49:23,697 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:49:23,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:49:23 BoogieIcfgContainer [2021-10-16 02:49:23,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:49:23,721 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:49:23,721 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:49:23,721 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:49:23,722 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:49:23" (3/4) ... [2021-10-16 02:49:23,726 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:49:23,726 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:49:23,729 INFO L168 Benchmark]: Toolchain (without parser) took 1105.58 ms. Allocated memory is still 127.9 MB. Free memory was 95.3 MB in the beginning and 79.4 MB in the end (delta: 15.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:49:23,730 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 44.6 MB in the beginning and 44.6 MB in the end (delta: 40.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:49:23,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.71 ms. Allocated memory is still 127.9 MB. Free memory was 95.1 MB in the beginning and 104.9 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:49:23,733 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.29 ms. Allocated memory is still 127.9 MB. Free memory was 104.5 MB in the beginning and 103.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:49:23,734 INFO L168 Benchmark]: Boogie Preprocessor took 21.65 ms. Allocated memory is still 127.9 MB. Free memory was 103.3 MB in the beginning and 102.4 MB in the end (delta: 887.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:49:23,735 INFO L168 Benchmark]: RCFGBuilder took 344.03 ms. Allocated memory is still 127.9 MB. Free memory was 102.4 MB in the beginning and 92.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:49:23,736 INFO L168 Benchmark]: TraceAbstraction took 358.47 ms. Allocated memory is still 127.9 MB. Free memory was 92.3 MB in the beginning and 79.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:49:23,737 INFO L168 Benchmark]: Witness Printer took 5.84 ms. Allocated memory is still 127.9 MB. Free memory was 79.8 MB in the beginning and 79.4 MB in the end (delta: 410.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:49:23,742 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 44.6 MB in the beginning and 44.6 MB in the end (delta: 40.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 304.71 ms. Allocated memory is still 127.9 MB. Free memory was 95.1 MB in the beginning and 104.9 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.29 ms. Allocated memory is still 127.9 MB. Free memory was 104.5 MB in the beginning and 103.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.65 ms. Allocated memory is still 127.9 MB. Free memory was 103.3 MB in the beginning and 102.4 MB in the end (delta: 887.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 344.03 ms. Allocated memory is still 127.9 MB. Free memory was 102.4 MB in the beginning and 92.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 358.47 ms. Allocated memory is still 127.9 MB. Free memory was 92.3 MB in the beginning and 79.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.84 ms. Allocated memory is still 127.9 MB. Free memory was 79.8 MB in the beginning and 79.4 MB in the end (delta: 410.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 6]: 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 16, overapproximation of someBinaryArithmeticFLOAToperation at line 13. Possible FailurePath: [L10] float x, y, z, r; [L12] x = 1e8f [L13] y = x + 1.f [L14] z = x - 1.f [L15] r = y - z [L6] COND TRUE !(cond) [L6] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 260.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 11.1ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.4ms SsaConstructionTime, 48.8ms SatisfiabilityAnalysisTime, 0.0ms 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 [2021-10-16 02:49:23,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/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-5709675 [2021-10-16 02:49:27,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:49:27,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:49:27,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:49:27,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:49:27,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:49:27,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:49:27,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:49:27,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:49:27,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:49:27,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:49:27,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:49:27,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:49:27,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:49:27,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:49:27,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:49:27,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:49:27,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:49:27,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:49:27,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:49:27,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:49:27,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:49:27,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:49:27,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:49:27,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:49:27,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:49:27,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:49:27,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:49:27,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:49:27,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:49:27,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:49:27,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:49:27,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:49:27,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:49:27,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:49:27,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:49:27,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:49:27,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:49:27,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:49:27,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:49:27,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:49:27,262 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:49:27,328 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:49:27,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:49:27,331 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:49:27,331 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:49:27,331 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:49:27,332 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:49:27,332 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:49:27,332 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:49:27,332 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:49:27,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:49:27,336 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:49:27,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:49:27,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:49:27,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:49:27,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:49:27,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:49:27,338 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:49:27,338 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:49:27,339 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:49:27,339 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:49:27,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:49:27,339 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:49:27,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:49:27,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:49:27,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:49:27,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:49:27,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:49:27,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:49:27,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:49:27,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:49:27,342 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:49:27,343 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:49:27,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:49:27,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:49:27,344 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:49:27,344 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_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6904bf6d43d7b400ac9a6f6c8ecd92ebae2bb440 [2021-10-16 02:49:27,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:49:27,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:49:27,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:49:27,893 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:49:27,894 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:49:27,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2021-10-16 02:49:27,982 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/data/4daf27a15/4ddd4387971d421fbdeb7c48f46159dd/FLAGd01f474db [2021-10-16 02:49:28,631 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:49:28,632 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2021-10-16 02:49:28,644 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/data/4daf27a15/4ddd4387971d421fbdeb7c48f46159dd/FLAGd01f474db [2021-10-16 02:49:28,959 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/data/4daf27a15/4ddd4387971d421fbdeb7c48f46159dd [2021-10-16 02:49:28,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:49:28,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:49:28,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:49:28,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:49:28,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:49:28,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:49:28" (1/1) ... [2021-10-16 02:49:28,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69d26342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:28, skipping insertion in model container [2021-10-16 02:49:28,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:49:28" (1/1) ... [2021-10-16 02:49:28,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:49:28,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:49:29,170 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_d08cc3d1-131d-4e1a-9070-4c52a1a76136/sv-benchmarks/c/float-benchs/addsub_float_inexact.c[394,407] [2021-10-16 02:49:29,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:49:29,201 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:49:29,217 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_d08cc3d1-131d-4e1a-9070-4c52a1a76136/sv-benchmarks/c/float-benchs/addsub_float_inexact.c[394,407] [2021-10-16 02:49:29,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:49:29,240 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:49:29,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:29 WrapperNode [2021-10-16 02:49:29,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:49:29,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:49:29,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:49:29,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:49:29,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:29" (1/1) ... [2021-10-16 02:49:29,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:29" (1/1) ... [2021-10-16 02:49:29,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:49:29,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:49:29,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:49:29,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:49:29,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:29" (1/1) ... [2021-10-16 02:49:29,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:29" (1/1) ... [2021-10-16 02:49:29,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:29" (1/1) ... [2021-10-16 02:49:29,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:29" (1/1) ... [2021-10-16 02:49:29,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:29" (1/1) ... [2021-10-16 02:49:29,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:29" (1/1) ... [2021-10-16 02:49:29,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:29" (1/1) ... [2021-10-16 02:49:29,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:49:29,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:49:29,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:49:29,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:49:29,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:29" (1/1) ... [2021-10-16 02:49:29,390 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:49:29,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:49:29,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:49:29,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:49:29,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:49:29,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:49:29,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:49:29,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:49:30,135 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:49:30,137 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-16 02:49:30,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:49:30 BoogieIcfgContainer [2021-10-16 02:49:30,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:49:30,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:49:30,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:49:30,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:49:30,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:49:28" (1/3) ... [2021-10-16 02:49:30,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc70759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:49:30, skipping insertion in model container [2021-10-16 02:49:30,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:29" (2/3) ... [2021-10-16 02:49:30,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc70759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:49:30, skipping insertion in model container [2021-10-16 02:49:30,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:49:30" (3/3) ... [2021-10-16 02:49:30,155 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_float_inexact.c [2021-10-16 02:49:30,162 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:49:30,163 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:49:30,221 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:49:30,230 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, mConcurrency=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 [2021-10-16 02:49:30,230 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:49:30,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:49:30,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:49:30,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:49:30,254 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:49:30,255 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:49:30,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:49:30,263 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-10-16 02:49:30,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:49:30,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527526087] [2021-10-16 02:49:30,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:49:30,281 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:49:30,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:49:30,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:49:30,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:49:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:49:30,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:49:30,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:49:30,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:49:30,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:49:31,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:49:31,159 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:49:31,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527526087] [2021-10-16 02:49:31,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527526087] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:49:31,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:49:31,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-16 02:49:31,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555492712] [2021-10-16 02:49:31,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:49:31,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:49:31,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:49:31,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:49:31,192 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:49:31,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:49:31,399 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-10-16 02:49:31,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:49:31,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-16 02:49:31,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:49:31,410 INFO L225 Difference]: With dead ends: 13 [2021-10-16 02:49:31,410 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:49:31,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 368.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:49:31,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:49:31,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:49:31,443 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) [2021-10-16 02:49:31,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:49:31,446 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-10-16 02:49:31,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:49:31,446 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:49:31,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:49:31,447 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:49:31,447 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:49:31,451 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:49:31,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:49:31,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:49:31,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:49:31,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:49:31,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:49:31,763 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:49:31,764 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:49:31,764 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:49:31,764 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:49:31,765 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2021-10-16 02:49:31,765 INFO L853 garLoopResultBuilder]: At program point L17(lines 8 18) the Hoare annotation is: (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-16 02:49:31,765 INFO L857 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2021-10-16 02:49:31,766 INFO L857 garLoopResultBuilder]: For program point L6-1(line 6) no Hoare annotation was computed. [2021-10-16 02:49:31,766 INFO L853 garLoopResultBuilder]: At program point L6-3(line 6) the Hoare annotation is: (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-16 02:49:31,772 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:49:31,799 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-16 02:49:31,811 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-16 02:49:31,813 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-16 02:49:31,814 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-16 02:49:31,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:49:31 BoogieIcfgContainer [2021-10-16 02:49:31,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:49:31,824 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:49:31,824 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:49:31,824 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:49:31,825 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:49:30" (3/4) ... [2021-10-16 02:49:31,829 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:49:31,855 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 02:49:31,871 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:49:31,871 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-16 02:49:31,871 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:49:31,947 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:49:31,947 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:49:31,950 INFO L168 Benchmark]: Toolchain (without parser) took 2983.80 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 43.7 MB in the beginning and 45.6 MB in the end (delta: -1.9 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:49:31,950 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 62.9 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:49:31,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.90 ms. Allocated memory is still 62.9 MB. Free memory was 43.4 MB in the beginning and 33.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:49:31,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.22 ms. Allocated memory is still 62.9 MB. Free memory was 33.6 MB in the beginning and 46.8 MB in the end (delta: -13.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:49:31,970 INFO L168 Benchmark]: Boogie Preprocessor took 66.45 ms. Allocated memory is still 62.9 MB. Free memory was 46.8 MB in the beginning and 45.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:49:31,971 INFO L168 Benchmark]: RCFGBuilder took 763.74 ms. Allocated memory is still 62.9 MB. Free memory was 45.7 MB in the beginning and 36.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:49:31,972 INFO L168 Benchmark]: TraceAbstraction took 1679.73 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 36.4 MB in the beginning and 48.1 MB in the end (delta: -11.6 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:49:31,973 INFO L168 Benchmark]: Witness Printer took 123.37 ms. Allocated memory is still 81.8 MB. Free memory was 48.1 MB in the beginning and 45.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:49:31,979 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 62.9 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.90 ms. Allocated memory is still 62.9 MB. Free memory was 43.4 MB in the beginning and 33.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.22 ms. Allocated memory is still 62.9 MB. Free memory was 33.6 MB in the beginning and 46.8 MB in the end (delta: -13.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.45 ms. Allocated memory is still 62.9 MB. Free memory was 46.8 MB in the beginning and 45.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 763.74 ms. Allocated memory is still 62.9 MB. Free memory was 45.7 MB in the beginning and 36.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1679.73 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 36.4 MB in the beginning and 48.1 MB in the end (delta: -11.6 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * Witness Printer took 123.37 ms. Allocated memory is still 81.8 MB. Free memory was 48.1 MB in the beginning and 45.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 6]: 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, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1553.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 11.7ms, AutomataDifference: 242.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 97.8ms, InitialAbstractionConstructionTime: 11.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 9 SDslu, 2 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 146.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 368.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 12.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 14 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 49.7ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 39.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 28.7ms SsaConstructionTime, 107.5ms SatisfiabilityAnalysisTime, 681.9ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 6 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant [2021-10-16 02:49:32,022 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-16 02:49:32,023 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: cond == 1bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 8]: Loop Invariant [2021-10-16 02:49:32,024 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-16 02:49:32,025 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: cond == 1bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2021-10-16 02:49:32,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08cc3d1-131d-4e1a-9070-4c52a1a76136/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...