./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/cast_union_tight.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/cast_union_tight.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw --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 692e0f6bff326dae555773498e30d5c37d6c88dd20df70f4e6fff349bc763d90 ................................................................................................................................................................................................................................................................ 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_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/cast_union_tight.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw --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 692e0f6bff326dae555773498e30d5c37d6c88dd20df70f4e6fff349bc763d90 ................................................................................................................................................................................................................................................................ 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-e943c26 [2021-10-20 05:18:51,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:18:51,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:18:51,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:18:51,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:18:51,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:18:51,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:18:51,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:18:51,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:18:51,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:18:51,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:18:51,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:18:51,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:18:51,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:18:51,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:18:51,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:18:51,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:18:51,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:18:51,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:18:51,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:18:51,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:18:51,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:18:51,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:18:51,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:18:51,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:18:51,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:18:51,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:18:51,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:18:51,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:18:51,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:18:51,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:18:51,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:18:51,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:18:51,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:18:51,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:18:51,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:18:51,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:18:51,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:18:51,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:18:51,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:18:51,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:18:51,498 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 05:18:51,541 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:18:51,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:18:51,542 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:18:51,543 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:18:51,543 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:18:51,543 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:18:51,543 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:18:51,544 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:18:51,550 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:18:51,550 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:18:51,551 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:18:51,552 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:18:51,552 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:18:51,552 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:18:51,552 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:18:51,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:18:51,553 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:18:51,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:18:51,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:18:51,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:18:51,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:18:51,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:18:51,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:18:51,555 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:18:51,555 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:18:51,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:18:51,556 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:18:51,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:18:51,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:18:51,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:18:51,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:18:51,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:18:51,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:18:51,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:18:51,559 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:18:51,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:18:51,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:18:51,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:18:51,560 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:18:51,560 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_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 692e0f6bff326dae555773498e30d5c37d6c88dd20df70f4e6fff349bc763d90 [2021-10-20 05:18:51,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:18:51,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:18:51,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:18:51,910 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:18:51,911 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:18:51,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/float-benchs/cast_union_tight.c [2021-10-20 05:18:51,981 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/data/cb51a040d/71ac084eaab2445bae423724ab42f38c/FLAG445f79ef8 [2021-10-20 05:18:52,445 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:18:52,446 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/sv-benchmarks/c/float-benchs/cast_union_tight.c [2021-10-20 05:18:52,451 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/data/cb51a040d/71ac084eaab2445bae423724ab42f38c/FLAG445f79ef8 [2021-10-20 05:18:52,841 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/data/cb51a040d/71ac084eaab2445bae423724ab42f38c [2021-10-20 05:18:52,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:18:52,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:18:52,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:18:52,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:18:52,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:18:52,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:18:52" (1/1) ... [2021-10-20 05:18:52,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5d8c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:52, skipping insertion in model container [2021-10-20 05:18:52,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:18:52" (1/1) ... [2021-10-20 05:18:52,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:18:52,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:18:53,042 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_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/sv-benchmarks/c/float-benchs/cast_union_tight.c[495,508] [2021-10-20 05:18:53,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:18:53,065 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:18:53,077 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_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/sv-benchmarks/c/float-benchs/cast_union_tight.c[495,508] [2021-10-20 05:18:53,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:18:53,096 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:18:53,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:53 WrapperNode [2021-10-20 05:18:53,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:18:53,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:18:53,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:18:53,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:18:53,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:53" (1/1) ... [2021-10-20 05:18:53,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:53" (1/1) ... [2021-10-20 05:18:53,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:18:53,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:18:53,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:18:53,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:18:53,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:53" (1/1) ... [2021-10-20 05:18:53,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:53" (1/1) ... [2021-10-20 05:18:53,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:53" (1/1) ... [2021-10-20 05:18:53,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:53" (1/1) ... [2021-10-20 05:18:53,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:53" (1/1) ... [2021-10-20 05:18:53,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:53" (1/1) ... [2021-10-20 05:18:53,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:53" (1/1) ... [2021-10-20 05:18:53,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:18:53,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:18:53,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:18:53,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:18:53,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:53" (1/1) ... [2021-10-20 05:18:53,176 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:18:53,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:18:53,215 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:18:53,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:18:53,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 05:18:53,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:18:53,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-20 05:18:53,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-20 05:18:53,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:18:53,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:18:53,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-20 05:18:53,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 05:18:53,626 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:18:53,627 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-20 05:18:53,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:18:53 BoogieIcfgContainer [2021-10-20 05:18:53,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:18:53,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:18:53,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:18:53,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:18:53,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:18:52" (1/3) ... [2021-10-20 05:18:53,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57445ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:18:53, skipping insertion in model container [2021-10-20 05:18:53,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:53" (2/3) ... [2021-10-20 05:18:53,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57445ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:18:53, skipping insertion in model container [2021-10-20 05:18:53,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:18:53" (3/3) ... [2021-10-20 05:18:53,651 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c [2021-10-20 05:18:53,656 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:18:53,656 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 05:18:53,732 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:18:53,743 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 [2021-10-20 05:18:53,743 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 05:18:53,757 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) [2021-10-20 05:18:53,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-20 05:18:53,763 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:53,764 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-20 05:18:53,764 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:18:53,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:53,772 INFO L82 PathProgramCache]: Analyzing trace with hash 49237, now seen corresponding path program 1 times [2021-10-20 05:18:53,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:18:53,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564628387] [2021-10-20 05:18:53,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:53,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:18:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:18:53,949 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 05:18:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:18:54,001 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-20 05:18:54,003 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 05:18:54,004 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:18:54,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 05:18:54,012 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:18:54,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:18:54 BoogieIcfgContainer [2021-10-20 05:18:54,029 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:18:54,030 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:18:54,030 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:18:54,030 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:18:54,031 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:18:53" (3/4) ... [2021-10-20 05:18:54,034 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-20 05:18:54,034 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:18:54,036 INFO L168 Benchmark]: Toolchain (without parser) took 1189.81 ms. Allocated memory is still 104.9 MB. Free memory was 62.7 MB in the beginning and 45.1 MB in the end (delta: 17.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-20 05:18:54,036 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 104.9 MB. Free memory is still 78.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:18:54,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.02 ms. Allocated memory is still 104.9 MB. Free memory was 62.4 MB in the beginning and 78.0 MB in the end (delta: -15.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-20 05:18:54,038 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.58 ms. Allocated memory is still 104.9 MB. Free memory was 78.0 MB in the beginning and 76.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:18:54,038 INFO L168 Benchmark]: Boogie Preprocessor took 21.87 ms. Allocated memory is still 104.9 MB. Free memory was 76.6 MB in the beginning and 75.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:18:54,039 INFO L168 Benchmark]: RCFGBuilder took 467.18 ms. Allocated memory is still 104.9 MB. Free memory was 75.3 MB in the beginning and 60.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-20 05:18:54,040 INFO L168 Benchmark]: TraceAbstraction took 398.89 ms. Allocated memory is still 104.9 MB. Free memory was 60.0 MB in the beginning and 45.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-20 05:18:54,040 INFO L168 Benchmark]: Witness Printer took 3.93 ms. Allocated memory is still 104.9 MB. Free memory was 45.3 MB in the beginning and 45.1 MB in the end (delta: 214.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:18:54,044 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 104.9 MB. Free memory is still 78.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 250.02 ms. Allocated memory is still 104.9 MB. Free memory was 62.4 MB in the beginning and 78.0 MB in the end (delta: -15.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.58 ms. Allocated memory is still 104.9 MB. Free memory was 78.0 MB in the beginning and 76.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.87 ms. Allocated memory is still 104.9 MB. Free memory was 76.6 MB in the beginning and 75.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 467.18 ms. Allocated memory is still 104.9 MB. Free memory was 75.3 MB in the beginning and 60.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 398.89 ms. Allocated memory is still 104.9 MB. Free memory was 60.0 MB in the beginning and 45.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 3.93 ms. Allocated memory is still 104.9 MB. Free memory was 45.3 MB in the beginning and 45.1 MB in the end (delta: 214.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 9]: 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 23, overapproximation of someBinaryDOUBLEComparisonOperation at line 34, overapproximation of bitwiseXor at line 22. Possible FailurePath: [L28] int a; [L29] double r; [L31] a = __VERIFIER_nondet_int() [L18] union u x, y; [L19] x.i[0] = 0x43300000 [L20] EXPR x.i[0] [L20] y.i[0] = x.i[0] [L21] x.i[1] = 0x80000000 [L22] EXPR x.i[1] [L22] y.i[1] = i ^ x.i[1] [L23] EXPR y.d [L23] EXPR x.d [L23] return y.d - x.d; [L23] return y.d - x.d; [L23] return y.d - x.d; [L33] r = cast(a) [L9] COND TRUE !(cond) [L9] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 280.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 9.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.3ms SsaConstructionTime, 89.4ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-20 05:18:54,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/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-e943c26 [2021-10-20 05:18:56,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:18:56,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:18:56,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:18:56,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:18:56,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:18:56,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:18:56,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:18:56,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:18:56,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:18:56,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:18:56,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:18:56,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:18:56,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:18:56,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:18:56,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:18:56,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:18:56,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:18:56,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:18:56,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:18:56,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:18:56,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:18:56,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:18:56,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:18:56,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:18:56,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:18:56,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:18:56,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:18:56,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:18:56,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:18:56,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:18:56,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:18:56,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:18:56,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:18:56,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:18:56,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:18:56,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:18:56,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:18:56,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:18:56,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:18:56,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:18:56,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-20 05:18:56,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:18:56,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:18:56,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:18:56,624 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:18:56,624 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:18:56,624 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:18:56,624 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:18:56,624 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:18:56,625 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:18:56,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:18:56,628 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:18:56,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:18:56,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:18:56,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:18:56,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:18:56,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:18:56,630 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:18:56,630 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-20 05:18:56,630 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-20 05:18:56,631 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:18:56,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:18:56,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:18:56,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:18:56,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:18:56,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-20 05:18:56,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:18:56,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:18:56,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:18:56,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:18:56,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:18:56,634 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-20 05:18:56,634 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-20 05:18:56,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:18:56,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:18:56,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:18:56,635 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_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 692e0f6bff326dae555773498e30d5c37d6c88dd20df70f4e6fff349bc763d90 [2021-10-20 05:18:56,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:18:57,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:18:57,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:18:57,027 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:18:57,027 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:18:57,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/float-benchs/cast_union_tight.c [2021-10-20 05:18:57,101 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/data/b68fe494e/61de9c2cb83e4dc39a3e3fb5a91dfa3c/FLAG41d873be6 [2021-10-20 05:18:57,545 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:18:57,546 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/sv-benchmarks/c/float-benchs/cast_union_tight.c [2021-10-20 05:18:57,553 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/data/b68fe494e/61de9c2cb83e4dc39a3e3fb5a91dfa3c/FLAG41d873be6 [2021-10-20 05:18:57,967 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/data/b68fe494e/61de9c2cb83e4dc39a3e3fb5a91dfa3c [2021-10-20 05:18:57,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:18:57,977 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:18:57,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:18:57,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:18:57,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:18:57,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:18:57" (1/1) ... [2021-10-20 05:18:57,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f633c13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:57, skipping insertion in model container [2021-10-20 05:18:57,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:18:57" (1/1) ... [2021-10-20 05:18:57,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:18:58,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:18:58,174 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_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/sv-benchmarks/c/float-benchs/cast_union_tight.c[495,508] [2021-10-20 05:18:58,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:18:58,201 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:18:58,236 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_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/sv-benchmarks/c/float-benchs/cast_union_tight.c[495,508] [2021-10-20 05:18:58,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:18:58,278 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:18:58,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:58 WrapperNode [2021-10-20 05:18:58,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:18:58,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:18:58,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:18:58,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:18:58,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:58" (1/1) ... [2021-10-20 05:18:58,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:58" (1/1) ... [2021-10-20 05:18:58,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:18:58,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:18:58,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:18:58,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:18:58,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:58" (1/1) ... [2021-10-20 05:18:58,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:58" (1/1) ... [2021-10-20 05:18:58,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:58" (1/1) ... [2021-10-20 05:18:58,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:58" (1/1) ... [2021-10-20 05:18:58,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:58" (1/1) ... [2021-10-20 05:18:58,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:58" (1/1) ... [2021-10-20 05:18:58,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:58" (1/1) ... [2021-10-20 05:18:58,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:18:58,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:18:58,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:18:58,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:18:58,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:58" (1/1) ... [2021-10-20 05:18:58,406 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:18:58,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:18:58,431 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:18:58,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:18:58,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-20 05:18:58,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-20 05:18:58,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:18:58,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-20 05:18:58,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:18:58,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:18:58,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 05:18:58,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-20 05:18:59,017 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:18:59,017 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-20 05:18:59,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:18:59 BoogieIcfgContainer [2021-10-20 05:18:59,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:18:59,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:18:59,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:18:59,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:18:59,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:18:57" (1/3) ... [2021-10-20 05:18:59,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d02af56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:18:59, skipping insertion in model container [2021-10-20 05:18:59,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:58" (2/3) ... [2021-10-20 05:18:59,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d02af56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:18:59, skipping insertion in model container [2021-10-20 05:18:59,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:18:59" (3/3) ... [2021-10-20 05:18:59,027 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c [2021-10-20 05:18:59,032 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:18:59,032 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 05:18:59,079 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:18:59,086 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 [2021-10-20 05:18:59,086 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 05:18:59,099 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 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) [2021-10-20 05:18:59,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-20 05:18:59,104 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:59,104 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-20 05:18:59,105 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:18:59,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:59,110 INFO L82 PathProgramCache]: Analyzing trace with hash 28692803, now seen corresponding path program 1 times [2021-10-20 05:18:59,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:18:59,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250343823] [2021-10-20 05:18:59,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:59,124 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:18:59,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:18:59,128 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:18:59,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-20 05:18:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:18:59,386 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 05:18:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:18:59,586 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-20 05:18:59,588 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 05:18:59,589 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:18:59,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-20 05:18:59,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:18:59,798 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:18:59,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:18:59 BoogieIcfgContainer [2021-10-20 05:18:59,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:18:59,838 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:18:59,838 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:18:59,839 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:18:59,840 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:18:59" (3/4) ... [2021-10-20 05:18:59,842 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-20 05:18:59,877 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:18:59,877 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:18:59,879 INFO L168 Benchmark]: Toolchain (without parser) took 1900.38 ms. Allocated memory is still 83.9 MB. Free memory was 49.5 MB in the beginning and 38.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2021-10-20 05:18:59,879 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory was 65.9 MB in the beginning and 65.9 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:18:59,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.35 ms. Allocated memory is still 83.9 MB. Free memory was 49.2 MB in the beginning and 67.4 MB in the end (delta: -18.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:18:59,881 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.22 ms. Allocated memory is still 83.9 MB. Free memory was 67.4 MB in the beginning and 65.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:18:59,881 INFO L168 Benchmark]: Boogie Preprocessor took 58.00 ms. Allocated memory is still 83.9 MB. Free memory was 65.8 MB in the beginning and 64.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:18:59,882 INFO L168 Benchmark]: RCFGBuilder took 623.77 ms. Allocated memory is still 83.9 MB. Free memory was 64.4 MB in the beginning and 53.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:18:59,883 INFO L168 Benchmark]: TraceAbstraction took 811.09 ms. Allocated memory is still 83.9 MB. Free memory was 53.2 MB in the beginning and 40.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-20 05:18:59,883 INFO L168 Benchmark]: Witness Printer took 38.83 ms. Allocated memory is still 83.9 MB. Free memory was 40.0 MB in the beginning and 38.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:18:59,887 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory was 65.9 MB in the beginning and 65.9 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.35 ms. Allocated memory is still 83.9 MB. Free memory was 49.2 MB in the beginning and 67.4 MB in the end (delta: -18.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.22 ms. Allocated memory is still 83.9 MB. Free memory was 67.4 MB in the beginning and 65.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.00 ms. Allocated memory is still 83.9 MB. Free memory was 65.8 MB in the beginning and 64.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 623.77 ms. Allocated memory is still 83.9 MB. Free memory was 64.4 MB in the beginning and 53.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 811.09 ms. Allocated memory is still 83.9 MB. Free memory was 53.2 MB in the beginning and 40.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 38.83 ms. Allocated memory is still 83.9 MB. Free memory was 40.0 MB in the beginning and 38.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 9]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L28] int a; [L29] double r; [L31] a = __VERIFIER_nondet_int() [L18] union u x, y; [L19] x.i[0] = 0x43300000 [L20] EXPR x.i[0] [L20] y.i[0] = x.i[0] [L21] x.i[1] = 0x80000000 [L22] EXPR x.i[1] [L22] y.i[1] = i ^ x.i[1] [L23] EXPR y.d [L23] EXPR x.d [L23] return y.d - x.d; [L23] return y.d - x.d; [L23] return y.d - x.d; [L33] r = cast(a) [L9] COND TRUE !(cond) [L9] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 718.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 8.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.8ms SsaConstructionTime, 210.3ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 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 proved your program to be incorrect! [2021-10-20 05:18:59,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b298e1-01d9-42ef-aedb-ec0c6be1b458/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...