./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c -s /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan --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 6a2ce6cad1ff26c462bd542dafb3ac3798055daa .................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c -s /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan --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 6a2ce6cad1ff26c462bd542dafb3ac3798055daa ........................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 18:03:17,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:03:17,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:03:17,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:03:17,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:03:17,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:03:17,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:03:17,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:03:17,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:03:17,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:03:17,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:03:17,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:03:17,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:03:17,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:03:17,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:03:17,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:03:17,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:03:17,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:03:17,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:03:17,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:03:17,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:03:17,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:03:17,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:03:17,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:03:17,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:03:17,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:03:17,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:03:17,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:03:17,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:03:17,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:03:17,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:03:17,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:03:17,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:03:17,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:03:17,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:03:17,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:03:17,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:03:17,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:03:17,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:03:17,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:03:17,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:03:17,683 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 18:03:17,706 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:03:17,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:03:17,707 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:03:17,707 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:03:17,707 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:03:17,707 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:03:17,708 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 18:03:17,708 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:03:17,708 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:03:17,708 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 18:03:17,708 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 18:03:17,709 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:03:17,709 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 18:03:17,709 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 18:03:17,714 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 18:03:17,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:03:17,715 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:03:17,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 18:03:17,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:03:17,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:03:17,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:03:17,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:03:17,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:03:17,716 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:03:17,716 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:03:17,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:03:17,716 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:03:17,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:03:17,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:03:17,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:03:17,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:03:17,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:03:17,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:03:17,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:03:17,718 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 18:03:17,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 18:03:17,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:03:17,718 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:03:17,719 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:03:17,719 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-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a2ce6cad1ff26c462bd542dafb3ac3798055daa [2020-12-09 18:03:17,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:03:17,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:03:17,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:03:17,923 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:03:17,924 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:03:17,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-12-09 18:03:17,972 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/data/3a65a3a6b/b4574330730d48d28a09d6e4d86977a6/FLAGb5ce5f640 [2020-12-09 18:03:18,324 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:03:18,325 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-12-09 18:03:18,335 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/data/3a65a3a6b/b4574330730d48d28a09d6e4d86977a6/FLAGb5ce5f640 [2020-12-09 18:03:18,350 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/data/3a65a3a6b/b4574330730d48d28a09d6e4d86977a6 [2020-12-09 18:03:18,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:03:18,354 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:03:18,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:03:18,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:03:18,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:03:18,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:03:18" (1/1) ... [2020-12-09 18:03:18,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@161f68be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:18, skipping insertion in model container [2020-12-09 18:03:18,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:03:18" (1/1) ... [2020-12-09 18:03:18,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:03:18,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:03:18,499 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/sv-benchmarks/c/float-newlib/float_req_bl_1210.c[2159,2172] [2020-12-09 18:03:18,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:03:18,508 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:03:18,526 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/sv-benchmarks/c/float-newlib/float_req_bl_1210.c[2159,2172] [2020-12-09 18:03:18,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:03:18,537 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:03:18,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:18 WrapperNode [2020-12-09 18:03:18,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:03:18,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:03:18,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:03:18,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:03:18,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:18" (1/1) ... [2020-12-09 18:03:18,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:18" (1/1) ... [2020-12-09 18:03:18,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:03:18,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:03:18,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:03:18,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:03:18,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:18" (1/1) ... [2020-12-09 18:03:18,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:18" (1/1) ... [2020-12-09 18:03:18,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:18" (1/1) ... [2020-12-09 18:03:18,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:18" (1/1) ... [2020-12-09 18:03:18,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:18" (1/1) ... [2020-12-09 18:03:18,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:18" (1/1) ... [2020-12-09 18:03:18,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:18" (1/1) ... [2020-12-09 18:03:18,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:03:18,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:03:18,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:03:18,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:03:18,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/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 [2020-12-09 18:03:18,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 18:03:18,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:03:18,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-09 18:03:18,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 18:03:18,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-09 18:03:18,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:03:18,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:03:18,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 18:03:18,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 18:03:18,980 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:03:18,981 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2020-12-09 18:03:18,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:03:18 BoogieIcfgContainer [2020-12-09 18:03:18,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:03:18,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:03:18,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:03:18,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:03:18,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:03:18" (1/3) ... [2020-12-09 18:03:18,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9292ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:03:18, skipping insertion in model container [2020-12-09 18:03:18,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:18" (2/3) ... [2020-12-09 18:03:18,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9292ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:03:18, skipping insertion in model container [2020-12-09 18:03:18,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:03:18" (3/3) ... [2020-12-09 18:03:18,991 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-12-09 18:03:19,005 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:03:19,008 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 18:03:19,018 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 18:03:19,038 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:03:19,038 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:03:19,038 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:03:19,038 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:03:19,038 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:03:19,038 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:03:19,038 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:03:19,038 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:03:19,049 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-09 18:03:19,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 18:03:19,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:03:19,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:03:19,055 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:03:19,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:03:19,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1945551752, now seen corresponding path program 1 times [2020-12-09 18:03:19,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:03:19,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415422820] [2020-12-09 18:03:19,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:03:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:03:19,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:03:19,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415422820] [2020-12-09 18:03:19,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:03:19,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:03:19,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435855734] [2020-12-09 18:03:19,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 18:03:19,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:03:19,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 18:03:19,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:03:19,211 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-09 18:03:19,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:03:19,223 INFO L93 Difference]: Finished difference Result 57 states and 91 transitions. [2020-12-09 18:03:19,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 18:03:19,224 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-09 18:03:19,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:03:19,231 INFO L225 Difference]: With dead ends: 57 [2020-12-09 18:03:19,231 INFO L226 Difference]: Without dead ends: 27 [2020-12-09 18:03:19,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:03:19,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-09 18:03:19,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-09 18:03:19,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 18:03:19,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-12-09 18:03:19,257 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 10 [2020-12-09 18:03:19,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:03:19,257 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-12-09 18:03:19,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 18:03:19,257 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-12-09 18:03:19,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 18:03:19,258 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:03:19,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:03:19,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 18:03:19,258 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:03:19,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:03:19,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1223456151, now seen corresponding path program 1 times [2020-12-09 18:03:19,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:03:19,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617100893] [2020-12-09 18:03:19,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:03:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 18:03:19,308 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 18:03:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 18:03:19,342 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 18:03:19,363 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 18:03:19,363 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 18:03:19,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 18:03:19,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:03:19 BoogieIcfgContainer [2020-12-09 18:03:19,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:03:19,394 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:03:19,394 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:03:19,394 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:03:19,394 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:03:18" (3/4) ... [2020-12-09 18:03:19,397 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 18:03:19,397 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:03:19,398 INFO L168 Benchmark]: Toolchain (without parser) took 1043.53 ms. Allocated memory was 86.0 MB in the beginning and 121.6 MB in the end (delta: 35.7 MB). Free memory was 65.3 MB in the beginning and 62.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:03:19,399 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 86.0 MB. Free memory is still 60.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:03:19,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 182.84 ms. Allocated memory is still 86.0 MB. Free memory was 65.1 MB in the beginning and 54.1 MB in the end (delta: 11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 18:03:19,400 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.87 ms. Allocated memory is still 86.0 MB. Free memory was 54.1 MB in the beginning and 52.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:03:19,400 INFO L168 Benchmark]: Boogie Preprocessor took 29.72 ms. Allocated memory is still 86.0 MB. Free memory was 52.2 MB in the beginning and 50.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:03:19,401 INFO L168 Benchmark]: RCFGBuilder took 376.34 ms. Allocated memory was 86.0 MB in the beginning and 121.6 MB in the end (delta: 35.7 MB). Free memory was 50.7 MB in the beginning and 89.2 MB in the end (delta: -38.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 16.1 GB. [2020-12-09 18:03:19,402 INFO L168 Benchmark]: TraceAbstraction took 408.08 ms. Allocated memory is still 121.6 MB. Free memory was 89.0 MB in the beginning and 63.8 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-12-09 18:03:19,402 INFO L168 Benchmark]: Witness Printer took 3.26 ms. Allocated memory is still 121.6 MB. Free memory was 63.8 MB in the beginning and 62.9 MB in the end (delta: 909.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:03:19,405 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 86.0 MB. Free memory is still 60.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 182.84 ms. Allocated memory is still 86.0 MB. Free memory was 65.1 MB in the beginning and 54.1 MB in the end (delta: 11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.87 ms. Allocated memory is still 86.0 MB. Free memory was 54.1 MB in the beginning and 52.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.72 ms. Allocated memory is still 86.0 MB. Free memory was 52.2 MB in the beginning and 50.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 376.34 ms. Allocated memory was 86.0 MB in the beginning and 121.6 MB in the end (delta: 35.7 MB). Free memory was 50.7 MB in the beginning and 89.2 MB in the end (delta: -38.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 408.08 ms. Allocated memory is still 121.6 MB. Free memory was 89.0 MB in the beginning and 63.8 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 3.26 ms. Allocated memory is still 121.6 MB. Free memory was 63.8 MB in the beginning and 62.9 MB in the end (delta: 909.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 88]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 75, overapproximation of someBinaryArithmeticFLOAToperation at line 82, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L13] static const float one_modf = 1.0; [L82] float x = 0.0f / 0.0f; [L83] float iptr; [L16] __int32_t i0, j0; [L17] __uint32_t i; VAL [one_modf=1] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [one_modf=1] [L24] COND TRUE j0 < 23 VAL [one_modf=1] [L25] COND TRUE j0 < 0 VAL [one_modf=1] [L27] ieee_float_shape_type sf_u; [L28] sf_u.word = (i0 & 0x80000000) [L29] EXPR sf_u.value [L29] (*iptr) = sf_u.value [L31] return x; VAL [one_modf=1] [L84] float res = modf_float(x, &iptr); [L87] EXPR \read(iptr) [L75] return x != x; [L87] isnan_float(iptr) && !isnan_float(res) [L75] return x != x; [L87] isnan_float(iptr) && !isnan_float(res) VAL [one_modf=1] [L87] COND TRUE isnan_float(iptr) && !isnan_float(res) [L88] reach_error() VAL [one_modf=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 18:03:20,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:03:20,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:03:20,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:03:20,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:03:20,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:03:20,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:03:20,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:03:20,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:03:20,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:03:20,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:03:20,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:03:20,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:03:20,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:03:20,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:03:20,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:03:20,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:03:20,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:03:20,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:03:20,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:03:20,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:03:20,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:03:20,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:03:20,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:03:20,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:03:20,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:03:20,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:03:20,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:03:20,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:03:20,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:03:20,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:03:20,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:03:20,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:03:20,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:03:20,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:03:20,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:03:20,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:03:20,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:03:20,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:03:20,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:03:20,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:03:20,952 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 18:03:20,968 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:03:20,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:03:20,969 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:03:20,969 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:03:20,970 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:03:20,970 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:03:20,970 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:03:20,970 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:03:20,970 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:03:20,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:03:20,971 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:03:20,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:03:20,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:03:20,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:03:20,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:03:20,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:03:20,971 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:03:20,971 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 18:03:20,971 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 18:03:20,972 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:03:20,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:03:20,972 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:03:20,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:03:20,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:03:20,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 18:03:20,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:03:20,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:03:20,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:03:20,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:03:20,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:03:20,977 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 18:03:20,977 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 18:03:20,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:03:20,977 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:03:20,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:03:20,978 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-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a2ce6cad1ff26c462bd542dafb3ac3798055daa [2020-12-09 18:03:21,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:03:21,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:03:21,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:03:21,233 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:03:21,233 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:03:21,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-12-09 18:03:21,274 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/data/476de3db3/261494a1072a4f199d62db3ffbd3c5e3/FLAGf06779e97 [2020-12-09 18:03:21,680 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:03:21,680 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-12-09 18:03:21,685 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/data/476de3db3/261494a1072a4f199d62db3ffbd3c5e3/FLAGf06779e97 [2020-12-09 18:03:21,695 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/data/476de3db3/261494a1072a4f199d62db3ffbd3c5e3 [2020-12-09 18:03:21,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:03:21,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:03:21,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:03:21,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:03:21,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:03:21,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:03:21" (1/1) ... [2020-12-09 18:03:21,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac75063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:21, skipping insertion in model container [2020-12-09 18:03:21,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:03:21" (1/1) ... [2020-12-09 18:03:21,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:03:21,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:03:21,834 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/sv-benchmarks/c/float-newlib/float_req_bl_1210.c[2159,2172] [2020-12-09 18:03:21,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:03:21,850 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:03:21,883 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/sv-benchmarks/c/float-newlib/float_req_bl_1210.c[2159,2172] [2020-12-09 18:03:21,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:03:21,895 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:03:21,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:21 WrapperNode [2020-12-09 18:03:21,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:03:21,897 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:03:21,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:03:21,897 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:03:21,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:21" (1/1) ... [2020-12-09 18:03:21,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:21" (1/1) ... [2020-12-09 18:03:21,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:03:21,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:03:21,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:03:21,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:03:21,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:21" (1/1) ... [2020-12-09 18:03:21,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:21" (1/1) ... [2020-12-09 18:03:21,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:21" (1/1) ... [2020-12-09 18:03:21,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:21" (1/1) ... [2020-12-09 18:03:21,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:21" (1/1) ... [2020-12-09 18:03:21,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:21" (1/1) ... [2020-12-09 18:03:21,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:21" (1/1) ... [2020-12-09 18:03:21,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:03:21,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:03:21,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:03:21,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:03:21,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/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 [2020-12-09 18:03:22,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 18:03:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:03:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-12-09 18:03:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 18:03:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:03:22,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:03:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-12-09 18:03:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 18:03:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 18:03:22,679 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:03:22,679 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2020-12-09 18:03:22,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:03:22 BoogieIcfgContainer [2020-12-09 18:03:22,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:03:22,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:03:22,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:03:22,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:03:22,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:03:21" (1/3) ... [2020-12-09 18:03:22,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d11c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:03:22, skipping insertion in model container [2020-12-09 18:03:22,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:03:21" (2/3) ... [2020-12-09 18:03:22,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d11c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:03:22, skipping insertion in model container [2020-12-09 18:03:22,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:03:22" (3/3) ... [2020-12-09 18:03:22,687 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-12-09 18:03:22,700 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:03:22,702 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 18:03:22,709 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 18:03:22,724 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:03:22,724 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:03:22,724 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:03:22,724 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:03:22,725 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:03:22,725 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:03:22,725 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:03:22,725 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:03:22,734 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-12-09 18:03:22,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 18:03:22,738 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:03:22,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:03:22,742 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:03:22,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:03:22,746 INFO L82 PathProgramCache]: Analyzing trace with hash -556426464, now seen corresponding path program 1 times [2020-12-09 18:03:22,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:03:22,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146256097] [2020-12-09 18:03:22,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/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 [2020-12-09 18:03:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:03:22,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 18:03:22,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:03:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:03:22,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:03:22,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146256097] [2020-12-09 18:03:22,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:03:22,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:03:22,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094422786] [2020-12-09 18:03:22,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 18:03:22,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:03:22,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 18:03:22,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:03:22,910 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2020-12-09 18:03:22,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:03:22,922 INFO L93 Difference]: Finished difference Result 66 states and 102 transitions. [2020-12-09 18:03:22,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 18:03:22,923 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-09 18:03:22,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:03:22,929 INFO L225 Difference]: With dead ends: 66 [2020-12-09 18:03:22,929 INFO L226 Difference]: Without dead ends: 31 [2020-12-09 18:03:22,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:03:22,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-09 18:03:22,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-12-09 18:03:22,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 18:03:22,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-12-09 18:03:22,952 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2020-12-09 18:03:22,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:03:22,953 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-12-09 18:03:22,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 18:03:22,953 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-12-09 18:03:22,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 18:03:22,953 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:03:22,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:03:23,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 18:03:23,156 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:03:23,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:03:23,158 INFO L82 PathProgramCache]: Analyzing trace with hash -56818241, now seen corresponding path program 1 times [2020-12-09 18:03:23,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:03:23,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185650570] [2020-12-09 18:03:23,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 18:03:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:03:23,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 18:03:23,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:03:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:03:23,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:03:23,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185650570] [2020-12-09 18:03:23,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:03:23,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 18:03:23,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387725048] [2020-12-09 18:03:23,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 18:03:23,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:03:23,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 18:03:23,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:03:23,410 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 5 states. [2020-12-09 18:03:23,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:03:23,721 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-12-09 18:03:23,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 18:03:23,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-09 18:03:23,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:03:23,722 INFO L225 Difference]: With dead ends: 38 [2020-12-09 18:03:23,722 INFO L226 Difference]: Without dead ends: 18 [2020-12-09 18:03:23,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 18:03:23,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-09 18:03:23,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-09 18:03:23,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 18:03:23,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-12-09 18:03:23,728 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2020-12-09 18:03:23,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:03:23,728 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-12-09 18:03:23,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 18:03:23,728 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-12-09 18:03:23,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 18:03:23,729 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:03:23,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:03:23,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 18:03:23,930 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:03:23,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:03:23,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1951048762, now seen corresponding path program 1 times [2020-12-09 18:03:23,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:03:23,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108139842] [2020-12-09 18:03:23,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 18:03:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:03:24,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 18:03:24,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:03:24,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:03:24,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:03:24,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108139842] [2020-12-09 18:03:24,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:03:24,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:03:24,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710934124] [2020-12-09 18:03:24,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:03:24,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:03:24,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:03:24,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:03:24,084 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 3 states. [2020-12-09 18:03:24,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:03:24,101 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2020-12-09 18:03:24,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:03:24,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-09 18:03:24,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:03:24,103 INFO L225 Difference]: With dead ends: 21 [2020-12-09 18:03:24,103 INFO L226 Difference]: Without dead ends: 18 [2020-12-09 18:03:24,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:03:24,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-09 18:03:24,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-09 18:03:24,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 18:03:24,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-12-09 18:03:24,108 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2020-12-09 18:03:24,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:03:24,108 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-12-09 18:03:24,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:03:24,108 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-12-09 18:03:24,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 18:03:24,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:03:24,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:03:24,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 18:03:24,311 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:03:24,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:03:24,313 INFO L82 PathProgramCache]: Analyzing trace with hash 352844637, now seen corresponding path program 1 times [2020-12-09 18:03:24,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:03:24,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656194888] [2020-12-09 18:03:24,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 18:03:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 18:03:24,479 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 18:03:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 18:03:24,611 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 18:03:24,652 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 18:03:24,652 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 18:03:24,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 18:03:24,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:03:24 BoogieIcfgContainer [2020-12-09 18:03:24,888 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:03:24,888 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:03:24,888 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:03:24,888 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:03:24,889 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:03:22" (3/4) ... [2020-12-09 18:03:24,890 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 18:03:24,926 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_261763c8-bd7f-45e7-ab3b-40c64c66fc61/bin/utaipan/witness.graphml [2020-12-09 18:03:24,926 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:03:24,927 INFO L168 Benchmark]: Toolchain (without parser) took 3228.61 ms. Allocated memory was 56.6 MB in the beginning and 86.0 MB in the end (delta: 29.4 MB). Free memory was 35.8 MB in the beginning and 57.5 MB in the end (delta: -21.7 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2020-12-09 18:03:24,928 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 39.0 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:03:24,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.37 ms. Allocated memory is still 56.6 MB. Free memory was 35.5 MB in the beginning and 38.9 MB in the end (delta: -3.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 18:03:24,929 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.00 ms. Allocated memory is still 56.6 MB. Free memory was 38.9 MB in the beginning and 37.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:03:24,929 INFO L168 Benchmark]: Boogie Preprocessor took 27.06 ms. Allocated memory is still 56.6 MB. Free memory was 37.0 MB in the beginning and 35.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:03:24,930 INFO L168 Benchmark]: RCFGBuilder took 724.44 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 35.3 MB in the beginning and 40.3 MB in the end (delta: -5.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:03:24,930 INFO L168 Benchmark]: TraceAbstraction took 2206.19 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 40.0 MB in the beginning and 60.2 MB in the end (delta: -20.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:03:24,930 INFO L168 Benchmark]: Witness Printer took 38.02 ms. Allocated memory is still 86.0 MB. Free memory was 60.2 MB in the beginning and 57.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:03:24,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 39.0 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 197.37 ms. Allocated memory is still 56.6 MB. Free memory was 35.5 MB in the beginning and 38.9 MB in the end (delta: -3.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.00 ms. Allocated memory is still 56.6 MB. Free memory was 38.9 MB in the beginning and 37.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.06 ms. Allocated memory is still 56.6 MB. Free memory was 37.0 MB in the beginning and 35.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 724.44 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 35.3 MB in the beginning and 40.3 MB in the end (delta: -5.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2206.19 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 40.0 MB in the beginning and 60.2 MB in the end (delta: -20.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 38.02 ms. Allocated memory is still 86.0 MB. Free memory was 60.2 MB in the beginning and 57.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 88]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L13] static const float one_modf = 1.0; VAL [one_modf=1.0] [L82] float x = 0.0f / 0.0f; [L83] float iptr; [L16] __int32_t i0, j0; [L17] __uint32_t i; VAL [one_modf=1.0] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [one_modf=1.0] [L24] COND FALSE !(j0 < 23) [L58] __uint32_t ix; [L59] *iptr = x * one_modf VAL [one_modf=1.0] [L61] ieee_float_shape_type gf_u; [L62] gf_u.value = (x) [L63] EXPR gf_u.word [L63] (ix) = gf_u.word [L66] ieee_float_shape_type sf_u; [L67] sf_u.word = (ix & 0x80000000) [L68] EXPR sf_u.value [L68] (x) = sf_u.value [L70] return x; VAL [one_modf=1.0] [L84] float res = modf_float(x, &iptr); [L87] EXPR \read(iptr) [L75] return x != x; VAL [one_modf=1.0] [L87] isnan_float(iptr) && !isnan_float(res) [L75] return x != x; VAL [one_modf=1.0] [L87] isnan_float(iptr) && !isnan_float(res) VAL [one_modf=1.0] [L87] COND TRUE isnan_float(iptr) && !isnan_float(res) [L88] reach_error() VAL [one_modf=1.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 33 SDslu, 24 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 41 ConstructedInterpolants, 4 QuantifiedInterpolants, 1308 SizeOfPredicates, 7 NumberOfNonLiveVariables, 198 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 incorrect! Received shutdown request...