./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI --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 debea56186ef4ab268c0be4274b8e0822edc1b01 ................................................................................................................................................................................................................................................... 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_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI --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 debea56186ef4ab268c0be4274b8e0822edc1b01 .......................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:31:24,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:31:24,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:31:24,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:31:24,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:31:24,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:31:24,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:31:24,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:31:24,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:31:24,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:31:24,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:31:24,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:31:24,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:31:24,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:31:24,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:31:24,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:31:24,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:31:24,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:31:24,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:31:24,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:31:24,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:31:24,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:31:24,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:31:24,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:31:24,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:31:24,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:31:24,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:31:24,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:31:24,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:31:24,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:31:24,792 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:31:24,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:31:24,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:31:24,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:31:24,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:31:24,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:31:24,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:31:24,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:31:24,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:31:24,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:31:24,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:31:24,803 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:31:24,847 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:31:24,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:31:24,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:31:24,849 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:31:24,849 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:31:24,849 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:31:24,849 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:31:24,850 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:31:24,850 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:31:24,850 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:31:24,851 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:31:24,851 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:31:24,851 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:31:24,852 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:31:24,852 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:31:24,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:31:24,853 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:31:24,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:31:24,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:31:24,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:31:24,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:31:24,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:31:24,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:31:24,854 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:31:24,854 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:31:24,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:31:24,855 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:31:24,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:31:24,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:31:24,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:31:24,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:24,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:31:24,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:31:24,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:31:24,857 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:31:24,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:31:24,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:31:24,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:31:24,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:31:24,857 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_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> debea56186ef4ab268c0be4274b8e0822edc1b01 [2021-10-11 02:31:25,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:31:25,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:31:25,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:31:25,206 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:31:25,210 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:31:25,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2021-10-11 02:31:25,305 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/data/b5aa76515/6292c65c4fe94b49893d958b42fc3f70/FLAG7c1835d80 [2021-10-11 02:31:25,791 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:31:25,792 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2021-10-11 02:31:25,804 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/data/b5aa76515/6292c65c4fe94b49893d958b42fc3f70/FLAG7c1835d80 [2021-10-11 02:31:26,137 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/data/b5aa76515/6292c65c4fe94b49893d958b42fc3f70 [2021-10-11 02:31:26,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:31:26,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:31:26,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:26,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:31:26,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:31:26,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:26" (1/1) ... [2021-10-11 02:31:26,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b9c9526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:26, skipping insertion in model container [2021-10-11 02:31:26,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:26" (1/1) ... [2021-10-11 02:31:26,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:31:26,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:31:26,357 WARN L226 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_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2021-10-11 02:31:26,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:26,371 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:31:26,389 WARN L226 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_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2021-10-11 02:31:26,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:26,412 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:31:26,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:26 WrapperNode [2021-10-11 02:31:26,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:26,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:26,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:31:26,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:31:26,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:26" (1/1) ... [2021-10-11 02:31:26,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:26" (1/1) ... [2021-10-11 02:31:26,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:26,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:31:26,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:31:26,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:31:26,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:26" (1/1) ... [2021-10-11 02:31:26,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:26" (1/1) ... [2021-10-11 02:31:26,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:26" (1/1) ... [2021-10-11 02:31:26,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:26" (1/1) ... [2021-10-11 02:31:26,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:26" (1/1) ... [2021-10-11 02:31:26,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:26" (1/1) ... [2021-10-11 02:31:26,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:26" (1/1) ... [2021-10-11 02:31:26,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:31:26,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:31:26,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:31:26,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:31:26,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:26" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:31:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:31:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-11 02:31:26,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:31:26,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:31:26,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:31:26,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:31:26,937 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:31:26,937 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-11 02:31:26,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:26 BoogieIcfgContainer [2021-10-11 02:31:26,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:31:26,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:31:26,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:31:26,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:31:26,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:31:26" (1/3) ... [2021-10-11 02:31:26,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642e8d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:26, skipping insertion in model container [2021-10-11 02:31:26,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:26" (2/3) ... [2021-10-11 02:31:26,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642e8d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:26, skipping insertion in model container [2021-10-11 02:31:26,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:26" (3/3) ... [2021-10-11 02:31:26,947 INFO L111 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2021-10-11 02:31:26,981 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:31:26,984 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:31:26,994 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:31:27,043 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:31:27,043 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:31:27,043 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:31:27,043 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:31:27,044 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:31:27,044 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:31:27,044 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:31:27,044 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:31:27,057 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2021-10-11 02:31:27,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:31:27,062 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:27,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:31:27,063 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:27,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:27,070 INFO L82 PathProgramCache]: Analyzing trace with hash 46289, now seen corresponding path program 1 times [2021-10-11 02:31:27,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:27,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275899404] [2021-10-11 02:31:27,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:31:27,215 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:31:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:31:27,260 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:31:27,286 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:31:27,286 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:31:27,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:31:27,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:31:27 BoogieIcfgContainer [2021-10-11 02:31:27,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:31:27,320 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:31:27,320 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:31:27,320 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:31:27,321 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:26" (3/4) ... [2021-10-11 02:31:27,334 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:31:27,334 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:31:27,336 INFO L168 Benchmark]: Toolchain (without parser) took 1192.31 ms. Allocated memory was 100.7 MB in the beginning and 144.7 MB in the end (delta: 44.0 MB). Free memory was 67.8 MB in the beginning and 90.7 MB in the end (delta: -22.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:27,337 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory was 56.8 MB in the beginning and 56.8 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:27,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.59 ms. Allocated memory was 100.7 MB in the beginning and 144.7 MB in the end (delta: 44.0 MB). Free memory was 67.6 MB in the beginning and 120.2 MB in the end (delta: -52.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:27,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.14 ms. Allocated memory is still 144.7 MB. Free memory was 120.2 MB in the beginning and 118.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:27,340 INFO L168 Benchmark]: Boogie Preprocessor took 20.77 ms. Allocated memory is still 144.7 MB. Free memory was 118.6 MB in the beginning and 117.9 MB in the end (delta: 726.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:27,341 INFO L168 Benchmark]: RCFGBuilder took 470.58 ms. Allocated memory is still 144.7 MB. Free memory was 117.5 MB in the beginning and 103.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:27,342 INFO L168 Benchmark]: TraceAbstraction took 376.61 ms. Allocated memory is still 144.7 MB. Free memory was 102.8 MB in the beginning and 90.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:27,347 INFO L168 Benchmark]: Witness Printer took 14.08 ms. Allocated memory is still 144.7 MB. Free memory was 90.9 MB in the beginning and 90.7 MB in the end (delta: 283.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:27,359 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory was 56.8 MB in the beginning and 56.8 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 267.59 ms. Allocated memory was 100.7 MB in the beginning and 144.7 MB in the end (delta: 44.0 MB). Free memory was 67.6 MB in the beginning and 120.2 MB in the end (delta: -52.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.14 ms. Allocated memory is still 144.7 MB. Free memory was 120.2 MB in the beginning and 118.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.77 ms. Allocated memory is still 144.7 MB. Free memory was 118.6 MB in the beginning and 117.9 MB in the end (delta: 726.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 470.58 ms. Allocated memory is still 144.7 MB. Free memory was 117.5 MB in the beginning and 103.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 376.61 ms. Allocated memory is still 144.7 MB. Free memory was 102.8 MB in the beginning and 90.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 14.08 ms. Allocated memory is still 144.7 MB. Free memory was 90.9 MB in the beginning and 90.7 MB in the end (delta: 283.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 114]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 111, overapproximation of someUnaryDOUBLEoperation at line 122. Possible FailurePath: [L111] float sum = a + b; [L112] union mix m; [L113] m.f = sum [L114] EXPR m.i [L114] COND TRUE !(m.i != 0x80000000) [L114] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:31:29,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:31:29,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:31:29,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:31:29,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:31:29,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:31:29,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:31:29,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:31:29,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:31:29,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:31:29,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:31:29,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:31:29,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:31:29,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:31:30,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:31:30,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:31:30,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:31:30,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:31:30,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:31:30,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:31:30,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:31:30,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:31:30,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:31:30,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:31:30,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:31:30,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:31:30,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:31:30,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:31:30,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:31:30,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:31:30,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:31:30,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:31:30,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:31:30,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:31:30,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:31:30,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:31:30,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:31:30,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:31:30,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:31:30,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:31:30,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:31:30,049 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:31:30,112 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:31:30,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:31:30,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:31:30,114 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:31:30,114 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:31:30,114 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:31:30,115 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:31:30,115 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:31:30,115 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:31:30,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:31:30,118 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:31:30,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:31:30,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:31:30,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:31:30,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:31:30,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:31:30,119 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:31:30,120 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:31:30,120 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:31:30,120 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:31:30,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:31:30,121 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:31:30,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:31:30,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:31:30,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:31:30,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:31:30,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:30,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:31:30,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:31:30,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:31:30,123 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:31:30,123 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:31:30,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:31:30,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:31:30,124 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:31:30,124 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_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> debea56186ef4ab268c0be4274b8e0822edc1b01 [2021-10-11 02:31:30,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:31:30,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:31:30,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:31:30,510 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:31:30,511 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:31:30,513 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2021-10-11 02:31:30,573 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/data/1ff938282/09f81aa08b364cc4961534eba2740f3c/FLAG5c613dd71 [2021-10-11 02:31:31,018 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:31:31,019 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2021-10-11 02:31:31,026 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/data/1ff938282/09f81aa08b364cc4961534eba2740f3c/FLAG5c613dd71 [2021-10-11 02:31:31,416 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/data/1ff938282/09f81aa08b364cc4961534eba2740f3c [2021-10-11 02:31:31,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:31:31,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:31:31,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:31,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:31:31,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:31:31,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:31" (1/1) ... [2021-10-11 02:31:31,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@918cc93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:31, skipping insertion in model container [2021-10-11 02:31:31,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:31" (1/1) ... [2021-10-11 02:31:31,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:31:31,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:31:31,639 WARN L226 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_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2021-10-11 02:31:31,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:31,658 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:31:31,688 WARN L226 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_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2021-10-11 02:31:31,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:31,710 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:31:31,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:31 WrapperNode [2021-10-11 02:31:31,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:31,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:31,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:31:31,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:31:31,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:31" (1/1) ... [2021-10-11 02:31:31,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:31" (1/1) ... [2021-10-11 02:31:31,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:31,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:31:31,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:31:31,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:31:31,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:31" (1/1) ... [2021-10-11 02:31:31,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:31" (1/1) ... [2021-10-11 02:31:31,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:31" (1/1) ... [2021-10-11 02:31:31,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:31" (1/1) ... [2021-10-11 02:31:31,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:31" (1/1) ... [2021-10-11 02:31:31,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:31" (1/1) ... [2021-10-11 02:31:31,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:31" (1/1) ... [2021-10-11 02:31:31,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:31:31,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:31:31,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:31:31,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:31:31,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:31" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:31:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:31:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 02:31:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:31:31,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:31:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-11 02:31:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:31:32,261 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:31:32,261 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-11 02:31:32,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:32 BoogieIcfgContainer [2021-10-11 02:31:32,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:31:32,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:31:32,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:31:32,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:31:32,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:31:31" (1/3) ... [2021-10-11 02:31:32,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775ebe01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:32, skipping insertion in model container [2021-10-11 02:31:32,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:31" (2/3) ... [2021-10-11 02:31:32,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775ebe01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:32, skipping insertion in model container [2021-10-11 02:31:32,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:32" (3/3) ... [2021-10-11 02:31:32,270 INFO L111 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2021-10-11 02:31:32,283 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:31:32,286 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:31:32,297 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:31:32,339 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:31:32,348 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:31:32,348 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:31:32,348 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:31:32,349 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:31:32,349 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:31:32,349 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:31:32,362 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:31:32,373 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2021-10-11 02:31:32,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:31:32,378 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:32,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:31:32,379 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:32,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:32,384 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-11 02:31:32,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:31:32,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587573202] [2021-10-11 02:31:32,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:31:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:32,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 02:31:32,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:32,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:32,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:31:32,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587573202] [2021-10-11 02:31:32,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:32,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:31:32,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192676752] [2021-10-11 02:31:32,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:31:32,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:31:32,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:31:32,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:31:32,670 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2021-10-11 02:31:32,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:32,769 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2021-10-11 02:31:32,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:31:32,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2021-10-11 02:31:32,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:32,777 INFO L225 Difference]: With dead ends: 15 [2021-10-11 02:31:32,778 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:31:32,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:32,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:31:32,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:31:32,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:31:32,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:31:32,803 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-10-11 02:31:32,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:32,804 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:31:32,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:31:32,804 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:31:32,804 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:31:33,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:31:33,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:31:33,067 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:31:33,067 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 02:31:33,067 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:31:33,068 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 02:31:33,068 INFO L258 CegarLoopResult]: At program point L123(lines 119 124) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2021-10-11 02:31:33,068 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 114) no Hoare annotation was computed. [2021-10-11 02:31:33,068 INFO L258 CegarLoopResult]: At program point L116(lines 110 117) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2021-10-11 02:31:33,069 INFO L262 CegarLoopResult]: For program point L114(line 114) no Hoare annotation was computed. [2021-10-11 02:31:33,069 INFO L262 CegarLoopResult]: For program point L114-1(line 114) no Hoare annotation was computed. [2021-10-11 02:31:33,069 INFO L262 CegarLoopResult]: For program point L114-3(line 114) no Hoare annotation was computed. [2021-10-11 02:31:33,076 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:31:33,079 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:31:33,080 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:31:33,081 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:31:33,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:31:33 BoogieIcfgContainer [2021-10-11 02:31:33,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:31:33,083 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:31:33,083 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:31:33,084 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:31:33,084 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:32" (3/4) ... [2021-10-11 02:31:33,087 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:31:33,096 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-11 02:31:33,096 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-11 02:31:33,096 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:31:33,096 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:31:33,128 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4cd719-7956-43af-be1e-d0ab0b2e0ae7/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:31:33,129 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:31:33,130 INFO L168 Benchmark]: Toolchain (without parser) took 1706.99 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 37.7 MB in the beginning and 39.2 MB in the end (delta: -1.5 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:33,131 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 58.7 MB. Free memory was 39.7 MB in the beginning and 39.7 MB in the end (delta: 46.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:33,132 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.89 ms. Allocated memory is still 58.7 MB. Free memory was 37.5 MB in the beginning and 42.2 MB in the end (delta: -4.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:33,133 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.86 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 42.2 MB in the beginning and 61.2 MB in the end (delta: -19.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:33,133 INFO L168 Benchmark]: Boogie Preprocessor took 26.05 ms. Allocated memory is still 77.6 MB. Free memory was 61.2 MB in the beginning and 60.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:33,134 INFO L168 Benchmark]: RCFGBuilder took 439.82 ms. Allocated memory is still 77.6 MB. Free memory was 59.9 MB in the beginning and 48.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:33,134 INFO L168 Benchmark]: TraceAbstraction took 818.24 ms. Allocated memory is still 77.6 MB. Free memory was 47.7 MB in the beginning and 42.0 MB in the end (delta: 5.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:33,135 INFO L168 Benchmark]: Witness Printer took 45.50 ms. Allocated memory is still 77.6 MB. Free memory was 41.7 MB in the beginning and 39.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:33,138 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 58.7 MB. Free memory was 39.7 MB in the beginning and 39.7 MB in the end (delta: 46.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 284.89 ms. Allocated memory is still 58.7 MB. Free memory was 37.5 MB in the beginning and 42.2 MB in the end (delta: -4.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.86 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 42.2 MB in the beginning and 61.2 MB in the end (delta: -19.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.05 ms. Allocated memory is still 77.6 MB. Free memory was 61.2 MB in the beginning and 60.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 439.82 ms. Allocated memory is still 77.6 MB. Free memory was 59.9 MB in the beginning and 48.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 818.24 ms. Allocated memory is still 77.6 MB. Free memory was 47.7 MB in the beginning and 42.0 MB in the end (delta: 5.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Witness Printer took 45.50 ms. Allocated memory is still 77.6 MB. Free memory was 41.7 MB in the beginning and 39.2 MB in the end (delta: 2.6 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: - PositiveResult [Line: 114]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 119]: Loop Invariant [2021-10-11 02:31:33,146 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:31:33,146 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 110]: Loop Invariant [2021-10-11 02:31:33,147 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:31:33,147 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 5 SDslu, 5 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 75 SizeOfPredicates, 9 NumberOfNonLiveVariables, 34 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...