./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8 --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 9558f99275cc5124f556ee48cb271fffdec36102 ....................................................................................................................................................................................................................................................... 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_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8 --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 9558f99275cc5124f556ee48cb271fffdec36102 .............................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:43:52,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:43:52,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:43:52,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:43:52,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:43:52,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:43:52,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:43:52,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:43:52,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:43:52,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:43:52,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:43:52,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:43:52,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:43:52,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:43:52,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:43:52,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:43:52,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:43:52,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:43:52,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:43:52,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:43:52,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:43:52,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:43:52,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:43:52,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:43:52,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:43:52,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:43:52,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:43:52,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:43:52,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:43:52,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:43:52,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:43:52,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:43:52,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:43:52,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:43:52,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:43:52,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:43:52,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:43:52,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:43:52,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:43:52,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:43:52,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:43:52,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:43:52,625 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:43:52,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:43:52,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:43:52,626 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:43:52,626 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:43:52,626 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:43:52,627 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:43:52,627 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:43:52,627 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:43:52,627 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:43:52,628 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:43:52,628 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:43:52,628 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:43:52,628 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:43:52,628 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:43:52,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:43:52,629 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:43:52,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:43:52,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:43:52,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:43:52,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:43:52,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:43:52,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:43:52,631 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:43:52,631 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:43:52,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:43:52,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:43:52,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:43:52,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:43:52,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:43:52,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:43:52,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:43:52,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:43:52,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:43:52,633 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:43:52,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:43:52,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:43:52,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:43:52,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:43:52,634 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_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9558f99275cc5124f556ee48cb271fffdec36102 [2021-10-13 07:43:52,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:43:52,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:43:52,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:43:52,926 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:43:52,926 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:43:52,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cbmc-regression/float1.c [2021-10-13 07:43:52,994 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/data/b20e2598d/59f18a43a0c04adaa29dd45d7c967e03/FLAG43b6ccfab [2021-10-13 07:43:53,434 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:43:53,437 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/sv-benchmarks/c/floats-cbmc-regression/float1.c [2021-10-13 07:43:53,449 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/data/b20e2598d/59f18a43a0c04adaa29dd45d7c967e03/FLAG43b6ccfab [2021-10-13 07:43:53,820 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/data/b20e2598d/59f18a43a0c04adaa29dd45d7c967e03 [2021-10-13 07:43:53,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:43:53,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:43:53,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:43:53,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:43:53,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:43:53,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:43:53" (1/1) ... [2021-10-13 07:43:53,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@135b10df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:53, skipping insertion in model container [2021-10-13 07:43:53,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:43:53" (1/1) ... [2021-10-13 07:43:53,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:43:53,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:43:54,015 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_67454703-9781-4ef1-8c87-1416969bafdf/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2021-10-13 07:43:54,019 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_67454703-9781-4ef1-8c87-1416969bafdf/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2021-10-13 07:43:54,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:43:54,029 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:43:54,057 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_67454703-9781-4ef1-8c87-1416969bafdf/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2021-10-13 07:43:54,059 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_67454703-9781-4ef1-8c87-1416969bafdf/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2021-10-13 07:43:54,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:43:54,076 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:43:54,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:54 WrapperNode [2021-10-13 07:43:54,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:43:54,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:43:54,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:43:54,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:43:54,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:54" (1/1) ... [2021-10-13 07:43:54,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:54" (1/1) ... [2021-10-13 07:43:54,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:43:54,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:43:54,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:43:54,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:43:54,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:54" (1/1) ... [2021-10-13 07:43:54,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:54" (1/1) ... [2021-10-13 07:43:54,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:54" (1/1) ... [2021-10-13 07:43:54,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:54" (1/1) ... [2021-10-13 07:43:54,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:54" (1/1) ... [2021-10-13 07:43:54,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:54" (1/1) ... [2021-10-13 07:43:54,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:54" (1/1) ... [2021-10-13 07:43:54,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:43:54,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:43:54,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:43:54,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:43:54,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:54" (1/1) ... [2021-10-13 07:43:54,161 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:43:54,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:43:54,192 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:43:54,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:43:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:43:54,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:43:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:43:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:43:54,442 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:43:54,442 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 07:43:54,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:43:54 BoogieIcfgContainer [2021-10-13 07:43:54,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:43:54,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:43:54,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:43:54,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:43:54,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:43:53" (1/3) ... [2021-10-13 07:43:54,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e73e988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:43:54, skipping insertion in model container [2021-10-13 07:43:54,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:54" (2/3) ... [2021-10-13 07:43:54,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e73e988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:43:54, skipping insertion in model container [2021-10-13 07:43:54,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:43:54" (3/3) ... [2021-10-13 07:43:54,461 INFO L111 eAbstractionObserver]: Analyzing ICFG float1.c [2021-10-13 07:43:54,472 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:43:54,472 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 07:43:54,522 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:43:54,529 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 [2021-10-13 07:43:54,529 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 07:43:54,543 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:43:54,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:43:54,548 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:43:54,549 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:43:54,549 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:43:54,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:43:54,555 INFO L82 PathProgramCache]: Analyzing trace with hash 51094, now seen corresponding path program 1 times [2021-10-13 07:43:54,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:43:54,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100121563] [2021-10-13 07:43:54,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:54,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:43:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:43:54,652 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:43:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:43:54,702 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:43:54,704 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:43:54,706 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:43:54,708 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:43:54,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:43:54,715 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:43:54,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:43:54 BoogieIcfgContainer [2021-10-13 07:43:54,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:43:54,731 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:43:54,732 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:43:54,732 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:43:54,733 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:43:54" (3/4) ... [2021-10-13 07:43:54,736 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:43:54,736 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:43:54,738 INFO L168 Benchmark]: Toolchain (without parser) took 913.07 ms. Allocated memory is still 98.6 MB. Free memory was 65.1 MB in the beginning and 48.8 MB in the end (delta: 16.3 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:43:54,739 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 51.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:43:54,740 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.38 ms. Allocated memory is still 98.6 MB. Free memory was 64.9 MB in the beginning and 73.9 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:43:54,741 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.35 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 72.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:43:54,742 INFO L168 Benchmark]: Boogie Preprocessor took 34.38 ms. Allocated memory is still 98.6 MB. Free memory was 72.5 MB in the beginning and 71.5 MB in the end (delta: 981.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:43:54,742 INFO L168 Benchmark]: RCFGBuilder took 293.02 ms. Allocated memory is still 98.6 MB. Free memory was 71.5 MB in the beginning and 62.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:43:54,743 INFO L168 Benchmark]: TraceAbstraction took 279.63 ms. Allocated memory is still 98.6 MB. Free memory was 62.0 MB in the beginning and 49.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:43:54,744 INFO L168 Benchmark]: Witness Printer took 4.74 ms. Allocated memory is still 98.6 MB. Free memory was 49.1 MB in the beginning and 48.8 MB in the end (delta: 323.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:43:54,747 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 51.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 251.38 ms. Allocated memory is still 98.6 MB. Free memory was 64.9 MB in the beginning and 73.9 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.35 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 72.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.38 ms. Allocated memory is still 98.6 MB. Free memory was 72.5 MB in the beginning and 71.5 MB in the end (delta: 981.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 293.02 ms. Allocated memory is still 98.6 MB. Free memory was 71.5 MB in the beginning and 62.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 279.63 ms. Allocated memory is still 98.6 MB. Free memory was 62.0 MB in the beginning and 49.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.74 ms. Allocated memory is still 98.6 MB. Free memory was 49.1 MB in the beginning and 48.8 MB in the end (delta: 323.9 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: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 10, overapproximation of someBinaryArithmeticDOUBLEoperation at line 9, overapproximation of to_real at line 8. Possible FailurePath: [L5] double x; [L6] int y; [L8] x=2 [L9] x-=0.6 [L10] y=x [L12] COND TRUE !(y==1) [L12] reach_error() - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 193.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 8.8ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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: 4.6ms SsaConstructionTime, 32.8ms 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 [2021-10-13 07:43:54,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/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-4e77c04 [2021-10-13 07:43:57,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:43:57,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:43:57,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:43:57,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:43:57,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:43:57,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:43:57,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:43:57,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:43:57,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:43:57,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:43:57,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:43:57,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:43:57,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:43:57,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:43:57,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:43:57,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:43:57,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:43:57,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:43:57,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:43:57,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:43:57,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:43:57,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:43:57,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:43:57,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:43:57,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:43:57,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:43:57,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:43:57,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:43:57,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:43:57,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:43:57,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:43:57,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:43:57,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:43:57,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:43:57,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:43:57,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:43:57,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:43:57,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:43:57,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:43:57,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:43:57,432 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:43:57,475 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:43:57,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:43:57,477 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:43:57,477 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:43:57,478 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:43:57,478 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:43:57,478 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:43:57,478 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:43:57,478 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:43:57,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:43:57,481 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:43:57,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:43:57,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:43:57,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:43:57,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:43:57,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:43:57,482 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:43:57,483 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:43:57,483 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:43:57,483 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:43:57,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:43:57,483 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:43:57,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:43:57,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:43:57,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:43:57,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:43:57,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:43:57,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:43:57,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:43:57,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:43:57,486 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:43:57,486 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:43:57,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:43:57,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:43:57,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:43:57,487 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_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9558f99275cc5124f556ee48cb271fffdec36102 [2021-10-13 07:43:57,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:43:57,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:43:57,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:43:57,909 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:43:57,910 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:43:57,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cbmc-regression/float1.c [2021-10-13 07:43:58,002 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/data/4d8d57c9a/6ad6c3a830354c0e96ff72c8ac365d89/FLAG0910882d5 [2021-10-13 07:43:58,622 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:43:58,622 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/sv-benchmarks/c/floats-cbmc-regression/float1.c [2021-10-13 07:43:58,629 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/data/4d8d57c9a/6ad6c3a830354c0e96ff72c8ac365d89/FLAG0910882d5 [2021-10-13 07:43:59,001 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/data/4d8d57c9a/6ad6c3a830354c0e96ff72c8ac365d89 [2021-10-13 07:43:59,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:43:59,009 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:43:59,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:43:59,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:43:59,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:43:59,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:43:59" (1/1) ... [2021-10-13 07:43:59,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8fb94d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:59, skipping insertion in model container [2021-10-13 07:43:59,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:43:59" (1/1) ... [2021-10-13 07:43:59,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:43:59,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:43:59,212 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_67454703-9781-4ef1-8c87-1416969bafdf/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2021-10-13 07:43:59,216 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_67454703-9781-4ef1-8c87-1416969bafdf/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2021-10-13 07:43:59,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:43:59,233 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:43:59,292 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_67454703-9781-4ef1-8c87-1416969bafdf/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2021-10-13 07:43:59,294 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_67454703-9781-4ef1-8c87-1416969bafdf/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2021-10-13 07:43:59,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:43:59,314 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:43:59,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:59 WrapperNode [2021-10-13 07:43:59,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:43:59,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:43:59,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:43:59,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:43:59,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:59" (1/1) ... [2021-10-13 07:43:59,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:59" (1/1) ... [2021-10-13 07:43:59,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:43:59,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:43:59,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:43:59,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:43:59,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:59" (1/1) ... [2021-10-13 07:43:59,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:59" (1/1) ... [2021-10-13 07:43:59,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:59" (1/1) ... [2021-10-13 07:43:59,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:59" (1/1) ... [2021-10-13 07:43:59,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:59" (1/1) ... [2021-10-13 07:43:59,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:59" (1/1) ... [2021-10-13 07:43:59,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:59" (1/1) ... [2021-10-13 07:43:59,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:43:59,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:43:59,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:43:59,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:43:59,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:59" (1/1) ... [2021-10-13 07:43:59,394 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:43:59,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:43:59,434 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:43:59,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:43:59,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:43:59,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:43:59,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:43:59,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:44:00,396 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:44:00,396 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 07:44:00,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:44:00 BoogieIcfgContainer [2021-10-13 07:44:00,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:44:00,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:44:00,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:44:00,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:44:00,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:43:59" (1/3) ... [2021-10-13 07:44:00,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1155b3c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:44:00, skipping insertion in model container [2021-10-13 07:44:00,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:59" (2/3) ... [2021-10-13 07:44:00,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1155b3c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:44:00, skipping insertion in model container [2021-10-13 07:44:00,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:44:00" (3/3) ... [2021-10-13 07:44:00,406 INFO L111 eAbstractionObserver]: Analyzing ICFG float1.c [2021-10-13 07:44:00,411 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:44:00,412 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 07:44:00,491 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:44:00,506 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 [2021-10-13 07:44:00,506 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 07:44:00,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:44:00,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:44:00,526 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:44:00,527 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:44:00,528 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:44:00,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:44:00,535 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-13 07:44:00,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:44:00,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391714699] [2021-10-13 07:44:00,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:44:00,550 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:44:00,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:44:00,554 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:44:00,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:44:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:44:00,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:44:00,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:44:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:44:00,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:44:01,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:44:01,384 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:44:01,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391714699] [2021-10-13 07:44:01,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391714699] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:44:01,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:44:01,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:44:01,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135497489] [2021-10-13 07:44:01,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:44:01,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:44:01,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:44:01,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:44:01,417 INFO L87 Difference]: Start difference. First operand has 12 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-10-13 07:44:01,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:44:01,768 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-10-13 07:44:01,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:44:01,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 07:44:01,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:44:01,777 INFO L225 Difference]: With dead ends: 17 [2021-10-13 07:44:01,777 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:44:01,780 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:44:01,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:44:01,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:44:01,805 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) [2021-10-13 07:44:01,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:44:01,807 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-10-13 07:44:01,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:44:01,807 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:44:01,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-10-13 07:44:01,808 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:44:01,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:44:01,811 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:44:01,812 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:44:01,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 07:44:02,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:44:02,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:44:02,032 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:44:02,032 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:44:02,033 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:44:02,033 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:44:02,033 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 07:44:02,033 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-13 07:44:02,033 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-13 07:44:02,034 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-13 07:44:02,034 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-13 07:44:02,034 INFO L857 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-10-13 07:44:02,034 INFO L857 garLoopResultBuilder]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-10-13 07:44:02,034 INFO L857 garLoopResultBuilder]: For program point L4(lines 4 20) no Hoare annotation was computed. [2021-10-13 07:44:02,039 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:44:02,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:44:02 BoogieIcfgContainer [2021-10-13 07:44:02,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:44:02,043 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:44:02,043 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:44:02,043 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:44:02,044 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:44:00" (3/4) ... [2021-10-13 07:44:02,060 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:44:02,068 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 07:44:02,069 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:44:02,069 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 07:44:02,069 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:44:02,103 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:44:02,103 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:44:02,105 INFO L168 Benchmark]: Toolchain (without parser) took 3094.49 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 37.0 MB in the beginning and 45.3 MB in the end (delta: -8.3 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:44:02,106 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 58.7 MB. Free memory is still 39.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:44:02,107 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.63 ms. Allocated memory is still 58.7 MB. Free memory was 36.9 MB in the beginning and 41.5 MB in the end (delta: -4.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:44:02,107 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.86 ms. Allocated memory is still 58.7 MB. Free memory was 41.3 MB in the beginning and 40.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:44:02,108 INFO L168 Benchmark]: Boogie Preprocessor took 25.72 ms. Allocated memory is still 58.7 MB. Free memory was 40.0 MB in the beginning and 38.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:44:02,108 INFO L168 Benchmark]: RCFGBuilder took 1013.00 ms. Allocated memory is still 58.7 MB. Free memory was 38.7 MB in the beginning and 30.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:44:02,109 INFO L168 Benchmark]: TraceAbstraction took 1642.66 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 29.5 MB in the beginning and 47.4 MB in the end (delta: -17.9 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:44:02,110 INFO L168 Benchmark]: Witness Printer took 60.29 ms. Allocated memory is still 81.8 MB. Free memory was 47.4 MB in the beginning and 45.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:44:02,113 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 58.7 MB. Free memory is still 39.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.63 ms. Allocated memory is still 58.7 MB. Free memory was 36.9 MB in the beginning and 41.5 MB in the end (delta: -4.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.86 ms. Allocated memory is still 58.7 MB. Free memory was 41.3 MB in the beginning and 40.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.72 ms. Allocated memory is still 58.7 MB. Free memory was 40.0 MB in the beginning and 38.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1013.00 ms. Allocated memory is still 58.7 MB. Free memory was 38.7 MB in the beginning and 30.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1642.66 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 29.5 MB in the beginning and 47.4 MB in the end (delta: -17.9 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Witness Printer took 60.29 ms. Allocated memory is still 81.8 MB. Free memory was 47.4 MB in the beginning and 45.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms 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: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1549.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 8.7ms, AutomataDifference: 384.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 3.4ms, InitialAbstractionConstructionTime: 11.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 4 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 299.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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: 10.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0ms HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 34.2ms SsaConstructionTime, 135.3ms SatisfiabilityAnalysisTime, 589.4ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 3 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 4 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 07:44:02,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67454703-9781-4ef1-8c87-1416969bafdf/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...