./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/cast_union_loose.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/cast_union_loose.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cad01e5fd5f490cad060ffa4545639c9a981c8333c1ed6f02c3073a3418f2324 .................................................................................................................................................................................................................................................................. 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_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/cast_union_loose.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cad01e5fd5f490cad060ffa4545639c9a981c8333c1ed6f02c3073a3418f2324 ................................................................................................................................................................................................................................................................................................................... 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 0.2.1-dev-b2eff8b [2021-10-29 05:43:44,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:43:44,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:43:44,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:43:44,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:43:44,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:43:44,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:43:44,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:43:44,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:43:44,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:43:44,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:43:44,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:43:44,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:43:44,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:43:44,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:43:44,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:43:44,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:43:44,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:43:44,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:43:44,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:43:44,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:43:44,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:43:44,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:43:44,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:43:44,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:43:44,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:43:44,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:43:44,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:43:44,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:43:44,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:43:44,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:43:44,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:43:44,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:43:44,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:43:44,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:43:44,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:43:44,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:43:44,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:43:44,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:43:44,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:43:44,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:43:44,861 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:43:44,907 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:43:44,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:43:44,913 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:43:44,913 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:43:44,914 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:43:44,914 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:43:44,914 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:43:44,914 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:43:44,915 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:43:44,915 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:43:44,916 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:43:44,917 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:43:44,917 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:43:44,918 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:43:44,918 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:43:44,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:43:44,919 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:43:44,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:43:44,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:43:44,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:43:44,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:43:44,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:43:44,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:43:44,921 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:43:44,921 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:43:44,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:43:44,922 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:43:44,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:43:44,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:43:44,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:43:44,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:43:44,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:43:44,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:43:44,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:43:44,926 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:43:44,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:43:44,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:43:44,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:43:44,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:43:44,927 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_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cad01e5fd5f490cad060ffa4545639c9a981c8333c1ed6f02c3073a3418f2324 [2021-10-29 05:43:45,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:43:45,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:43:45,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:43:45,311 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:43:45,312 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:43:45,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-benchs/cast_union_loose.c [2021-10-29 05:43:45,388 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/data/5399e3a97/98a7586a4ca344519f83a55509f732b0/FLAG709b16ed0 [2021-10-29 05:43:45,975 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:43:45,975 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/sv-benchmarks/c/float-benchs/cast_union_loose.c [2021-10-29 05:43:45,983 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/data/5399e3a97/98a7586a4ca344519f83a55509f732b0/FLAG709b16ed0 [2021-10-29 05:43:46,264 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/data/5399e3a97/98a7586a4ca344519f83a55509f732b0 [2021-10-29 05:43:46,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:43:46,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:43:46,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:43:46,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:43:46,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:43:46,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:43:46" (1/1) ... [2021-10-29 05:43:46,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a45811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:46, skipping insertion in model container [2021-10-29 05:43:46,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:43:46" (1/1) ... [2021-10-29 05:43:46,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:43:46,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:43:46,594 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_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/sv-benchmarks/c/float-benchs/cast_union_loose.c[582,595] [2021-10-29 05:43:46,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:43:46,651 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:43:46,672 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_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/sv-benchmarks/c/float-benchs/cast_union_loose.c[582,595] [2021-10-29 05:43:46,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:43:46,727 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:43:46,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:46 WrapperNode [2021-10-29 05:43:46,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:43:46,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:43:46,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:43:46,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:43:46,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:46" (1/1) ... [2021-10-29 05:43:46,752 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:46" (1/1) ... [2021-10-29 05:43:46,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:43:46,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:43:46,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:43:46,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:43:46,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:46" (1/1) ... [2021-10-29 05:43:46,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:46" (1/1) ... [2021-10-29 05:43:46,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:46" (1/1) ... [2021-10-29 05:43:46,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:46" (1/1) ... [2021-10-29 05:43:46,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:46" (1/1) ... [2021-10-29 05:43:46,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:46" (1/1) ... [2021-10-29 05:43:46,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:46" (1/1) ... [2021-10-29 05:43:46,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:43:46,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:43:46,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:43:46,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:43:46,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:46" (1/1) ... [2021-10-29 05:43:46,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:43:46,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:43:46,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:43:46,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:43:46,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:43:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:43:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-29 05:43:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 05:43:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:43:46,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:43:46,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 05:43:46,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:43:47,440 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:43:47,441 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-29 05:43:47,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:43:47 BoogieIcfgContainer [2021-10-29 05:43:47,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:43:47,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:43:47,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:43:47,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:43:47,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:43:46" (1/3) ... [2021-10-29 05:43:47,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139574fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:43:47, skipping insertion in model container [2021-10-29 05:43:47,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:46" (2/3) ... [2021-10-29 05:43:47,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139574fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:43:47, skipping insertion in model container [2021-10-29 05:43:47,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:43:47" (3/3) ... [2021-10-29 05:43:47,455 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2021-10-29 05:43:47,462 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:43:47,472 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:43:47,533 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:43:47,556 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:43:47,557 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:43:47,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:43:47,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:43:47,594 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:43:47,595 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:43:47,596 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:43:47,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:43:47,604 INFO L85 PathProgramCache]: Analyzing trace with hash 60993, now seen corresponding path program 1 times [2021-10-29 05:43:47,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:43:47,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394286530] [2021-10-29 05:43:47,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:43:47,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:43:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:43:47,810 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:43:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:43:47,893 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:43:47,896 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:43:47,897 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:43:47,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:43:47,908 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:43:47,920 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:43:47,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:43:47 BoogieIcfgContainer [2021-10-29 05:43:47,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:43:47,953 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:43:47,953 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:43:47,954 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:43:47,954 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:43:47" (3/4) ... [2021-10-29 05:43:47,958 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:43:47,959 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:43:47,961 INFO L168 Benchmark]: Toolchain (without parser) took 1690.31 ms. Allocated memory is still 123.7 MB. Free memory was 85.7 MB in the beginning and 62.0 MB in the end (delta: 23.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:43:47,962 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 123.7 MB. Free memory is still 102.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:43:47,963 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.46 ms. Allocated memory is still 123.7 MB. Free memory was 85.5 MB in the beginning and 97.7 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:43:47,964 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.08 ms. Allocated memory is still 123.7 MB. Free memory was 97.7 MB in the beginning and 96.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:43:47,965 INFO L168 Benchmark]: Boogie Preprocessor took 60.21 ms. Allocated memory is still 123.7 MB. Free memory was 96.1 MB in the beginning and 94.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:43:47,966 INFO L168 Benchmark]: RCFGBuilder took 595.81 ms. Allocated memory is still 123.7 MB. Free memory was 94.5 MB in the beginning and 78.2 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:43:47,967 INFO L168 Benchmark]: TraceAbstraction took 505.64 ms. Allocated memory is still 123.7 MB. Free memory was 77.7 MB in the beginning and 62.5 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:43:47,968 INFO L168 Benchmark]: Witness Printer took 5.73 ms. Allocated memory is still 123.7 MB. Free memory is still 62.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:43:47,972 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 123.7 MB. Free memory is still 102.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 456.46 ms. Allocated memory is still 123.7 MB. Free memory was 85.5 MB in the beginning and 97.7 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.08 ms. Allocated memory is still 123.7 MB. Free memory was 97.7 MB in the beginning and 96.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.21 ms. Allocated memory is still 123.7 MB. Free memory was 96.1 MB in the beginning and 94.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 595.81 ms. Allocated memory is still 123.7 MB. Free memory was 94.5 MB in the beginning and 78.2 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 505.64 ms. Allocated memory is still 123.7 MB. Free memory was 77.7 MB in the beginning and 62.5 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.73 ms. Allocated memory is still 123.7 MB. Free memory is still 62.0 MB. 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticDOUBLEoperation at line 27, overapproximation of someBinaryDOUBLEComparisonOperation at line 39, overapproximation of bitwiseXor at line 26. Possible FailurePath: [L32] int a; [L33] double r; [L35] a = __VERIFIER_nondet_int() [L11] COND FALSE !(!cond) [L22] union u x, y; [L23] x.i[0] = 0x43300000 [L24] EXPR x.i[0] [L24] y.i[0] = x.i[0] [L25] x.i[1] = 0x80000000 [L26] EXPR x.i[1] [L26] y.i[1] = i ^ x.i[1] [L27] EXPR y.d [L27] EXPR x.d [L27] return y.d - x.d; [L27] return y.d - x.d; [L27] return y.d - x.d; [L38] r = cast(a) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 05:43:48,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:43:51,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:43:51,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:43:51,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:43:51,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:43:51,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:43:51,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:43:51,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:43:51,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:43:51,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:43:51,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:43:51,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:43:51,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:43:51,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:43:51,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:43:51,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:43:51,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:43:51,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:43:51,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:43:51,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:43:51,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:43:51,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:43:51,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:43:51,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:43:51,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:43:51,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:43:51,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:43:51,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:43:51,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:43:51,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:43:51,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:43:51,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:43:51,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:43:51,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:43:51,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:43:51,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:43:51,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:43:51,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:43:51,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:43:51,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:43:51,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:43:51,236 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:43:51,271 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:43:51,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:43:51,273 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:43:51,277 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:43:51,277 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:43:51,278 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:43:51,278 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:43:51,278 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:43:51,279 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:43:51,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:43:51,280 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:43:51,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:43:51,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:43:51,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:43:51,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:43:51,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:43:51,282 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:43:51,283 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:43:51,283 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:43:51,283 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:43:51,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:43:51,284 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:43:51,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:43:51,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:43:51,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:43:51,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:43:51,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:43:51,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:43:51,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:43:51,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:43:51,287 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:43:51,288 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:43:51,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:43:51,288 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:43:51,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:43:51,289 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_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cad01e5fd5f490cad060ffa4545639c9a981c8333c1ed6f02c3073a3418f2324 [2021-10-29 05:43:51,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:43:51,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:43:51,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:43:51,796 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:43:51,797 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:43:51,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-benchs/cast_union_loose.c [2021-10-29 05:43:51,887 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/data/1f7de45b7/feb8c90d233848dbb1998d8f8383ef2a/FLAG50380313b [2021-10-29 05:43:52,622 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:43:52,623 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/sv-benchmarks/c/float-benchs/cast_union_loose.c [2021-10-29 05:43:52,633 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/data/1f7de45b7/feb8c90d233848dbb1998d8f8383ef2a/FLAG50380313b [2021-10-29 05:43:52,947 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/data/1f7de45b7/feb8c90d233848dbb1998d8f8383ef2a [2021-10-29 05:43:52,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:43:52,952 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:43:52,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:43:52,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:43:52,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:43:52,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:43:52" (1/1) ... [2021-10-29 05:43:52,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e89f672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:52, skipping insertion in model container [2021-10-29 05:43:52,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:43:52" (1/1) ... [2021-10-29 05:43:52,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:43:52,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:43:53,170 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/sv-benchmarks/c/float-benchs/cast_union_loose.c[582,595] [2021-10-29 05:43:53,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:43:53,206 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:43:53,223 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_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/sv-benchmarks/c/float-benchs/cast_union_loose.c[582,595] [2021-10-29 05:43:53,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:43:53,258 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:43:53,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:53 WrapperNode [2021-10-29 05:43:53,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:43:53,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:43:53,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:43:53,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:43:53,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:53" (1/1) ... [2021-10-29 05:43:53,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:53" (1/1) ... [2021-10-29 05:43:53,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:43:53,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:43:53,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:43:53,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:43:53,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:53" (1/1) ... [2021-10-29 05:43:53,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:53" (1/1) ... [2021-10-29 05:43:53,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:53" (1/1) ... [2021-10-29 05:43:53,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:53" (1/1) ... [2021-10-29 05:43:53,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:53" (1/1) ... [2021-10-29 05:43:53,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:53" (1/1) ... [2021-10-29 05:43:53,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:53" (1/1) ... [2021-10-29 05:43:53,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:43:53,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:43:53,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:43:53,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:43:53,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:53" (1/1) ... [2021-10-29 05:43:53,432 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:43:53,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:43:53,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:43:53,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:43:53,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-29 05:43:53,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:43:53,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:43:53,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-29 05:43:53,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:43:53,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:43:53,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:43:53,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-29 05:43:54,289 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:43:54,289 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-29 05:43:54,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:43:54 BoogieIcfgContainer [2021-10-29 05:43:54,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:43:54,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:43:54,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:43:54,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:43:54,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:43:52" (1/3) ... [2021-10-29 05:43:54,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@701a01de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:43:54, skipping insertion in model container [2021-10-29 05:43:54,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:43:53" (2/3) ... [2021-10-29 05:43:54,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@701a01de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:43:54, skipping insertion in model container [2021-10-29 05:43:54,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:43:54" (3/3) ... [2021-10-29 05:43:54,325 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2021-10-29 05:43:54,332 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:43:54,332 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:43:54,447 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:43:54,456 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:43:54,456 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:43:54,473 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.3) 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) [2021-10-29 05:43:54,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:43:54,480 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:43:54,481 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:43:54,481 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:43:54,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:43:54,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2021-10-29 05:43:54,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:43:54,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644956497] [2021-10-29 05:43:54,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:43:54,506 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:43:54,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:43:54,510 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:43:54,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:43:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:43:54,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:43:54,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:43:54,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:43:54,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:43:54,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:43:54,876 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:43:54,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644956497] [2021-10-29 05:43:54,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644956497] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:43:54,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:43:54,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:43:54,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468210884] [2021-10-29 05:43:54,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:43:54,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:43:54,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:43:54,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:43:54,913 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.3) 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:43:54,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:43:54,935 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-10-29 05:43:54,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:43:54,937 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 05:43:54,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:43:54,948 INFO L225 Difference]: With dead ends: 21 [2021-10-29 05:43:54,948 INFO L226 Difference]: Without dead ends: 8 [2021-10-29 05:43:54,951 INFO L786 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 [2021-10-29 05:43:54,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-29 05:43:54,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-29 05:43:54,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:43:54,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-10-29 05:43:54,990 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2021-10-29 05:43:54,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:43:54,991 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-10-29 05:43:54,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:43:54,991 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-10-29 05:43:54,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:43:54,993 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:43:54,994 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:43:55,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-29 05:43:55,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:43:55,208 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:43:55,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:43:55,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2021-10-29 05:43:55,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:43:55,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752328188] [2021-10-29 05:43:55,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:43:55,210 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:43:55,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:43:55,228 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:43:55,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:43:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:43:55,496 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:43:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:43:55,706 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 05:43:55,707 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:43:55,710 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:43:55,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:43:55,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:43:55,930 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-29 05:43:55,934 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:43:55,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:43:55 BoogieIcfgContainer [2021-10-29 05:43:55,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:43:55,976 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:43:55,977 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:43:55,977 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:43:55,978 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:43:54" (3/4) ... [2021-10-29 05:43:55,980 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:43:56,039 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:43:56,039 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:43:56,042 INFO L168 Benchmark]: Toolchain (without parser) took 3088.35 ms. Allocated memory was 73.4 MB in the beginning and 92.3 MB in the end (delta: 18.9 MB). Free memory was 55.0 MB in the beginning and 58.3 MB in the end (delta: -3.3 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:43:56,043 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 73.4 MB. Free memory is still 54.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:43:56,043 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.28 ms. Allocated memory is still 73.4 MB. Free memory was 54.9 MB in the beginning and 44.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:43:56,044 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.22 ms. Allocated memory is still 73.4 MB. Free memory was 44.2 MB in the beginning and 55.6 MB in the end (delta: -11.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:43:56,045 INFO L168 Benchmark]: Boogie Preprocessor took 51.98 ms. Allocated memory is still 73.4 MB. Free memory was 55.6 MB in the beginning and 54.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:43:56,046 INFO L168 Benchmark]: RCFGBuilder took 870.45 ms. Allocated memory is still 73.4 MB. Free memory was 54.4 MB in the beginning and 43.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:43:56,047 INFO L168 Benchmark]: TraceAbstraction took 1679.97 ms. Allocated memory was 73.4 MB in the beginning and 92.3 MB in the end (delta: 18.9 MB). Free memory was 43.1 MB in the beginning and 60.4 MB in the end (delta: -17.3 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:43:56,047 INFO L168 Benchmark]: Witness Printer took 63.26 ms. Allocated memory is still 92.3 MB. Free memory was 60.4 MB in the beginning and 58.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:43:56,052 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 73.4 MB. Free memory is still 54.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.28 ms. Allocated memory is still 73.4 MB. Free memory was 54.9 MB in the beginning and 44.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 107.22 ms. Allocated memory is still 73.4 MB. Free memory was 44.2 MB in the beginning and 55.6 MB in the end (delta: -11.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.98 ms. Allocated memory is still 73.4 MB. Free memory was 55.6 MB in the beginning and 54.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 870.45 ms. Allocated memory is still 73.4 MB. Free memory was 54.4 MB in the beginning and 43.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1679.97 ms. Allocated memory was 73.4 MB in the beginning and 92.3 MB in the end (delta: 18.9 MB). Free memory was 43.1 MB in the beginning and 60.4 MB in the end (delta: -17.3 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. * Witness Printer took 63.26 ms. Allocated memory is still 92.3 MB. Free memory was 60.4 MB in the beginning and 58.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L32] int a; [L33] double r; [L35] a = __VERIFIER_nondet_int() [L11] COND FALSE !(!cond) [L22] union u x, y; [L23] x.i[0] = 0x43300000 [L24] EXPR x.i[0] [L24] y.i[0] = x.i[0] [L25] x.i[1] = 0x80000000 [L26] EXPR x.i[1] [L26] y.i[1] = i ^ x.i[1] [L27] EXPR y.d [L27] EXPR x.d [L27] return y.d - x.d; [L27] return y.d - x.d; [L27] return y.d - x.d; [L38] r = cast(a) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.3s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 43 ConjunctsInSsa, 1 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-29 05:43:56,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4dc16c0-8719-46c4-a9eb-2a819f7a7ff8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...