./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_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/cast_union_tight.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE --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_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/cast_union_tight.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE --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 [2021-10-24 09:48:37,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:48:37,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:48:37,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:48:37,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:48:37,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:48:37,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:48:37,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:48:37,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:48:37,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:48:37,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:48:37,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:48:37,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:48:37,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:48:37,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:48:37,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:48:37,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:48:37,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:48:37,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:48:37,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:48:37,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:48:37,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:48:37,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:48:37,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:48:37,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:48:37,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:48:37,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:48:37,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:48:37,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:48:37,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:48:37,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:48:37,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:48:37,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:48:37,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:48:37,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:48:37,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:48:37,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:48:37,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:48:37,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:48:37,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:48:37,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:48:37,382 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:48:37,435 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:48:37,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:48:37,438 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:48:37,438 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:48:37,438 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:48:37,439 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:48:37,439 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:48:37,439 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:48:37,447 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:48:37,448 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:48:37,449 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:48:37,450 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:48:37,450 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:48:37,451 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:48:37,451 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:48:37,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:48:37,452 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:48:37,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:48:37,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:48:37,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:48:37,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:48:37,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:48:37,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:48:37,455 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:48:37,455 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:48:37,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:48:37,456 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:48:37,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:48:37,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:48:37,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:48:37,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:48:37,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:48:37,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:48:37,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:48:37,459 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:48:37,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:48:37,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:48:37,460 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:48:37,460 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:48:37,461 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_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 692e0f6bff326dae555773498e30d5c37d6c88dd20df70f4e6fff349bc763d90 [2021-10-24 09:48:37,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:48:37,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:48:37,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:48:37,960 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:48:37,961 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:48:37,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/float-benchs/cast_union_tight.c [2021-10-24 09:48:38,039 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/data/71baaef60/6f8fecf500c249caaf157646093172f5/FLAG9caf86475 [2021-10-24 09:48:38,644 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:48:38,645 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/sv-benchmarks/c/float-benchs/cast_union_tight.c [2021-10-24 09:48:38,654 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/data/71baaef60/6f8fecf500c249caaf157646093172f5/FLAG9caf86475 [2021-10-24 09:48:38,977 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/data/71baaef60/6f8fecf500c249caaf157646093172f5 [2021-10-24 09:48:38,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:48:38,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:48:39,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:48:39,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:48:39,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:48:39,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:48:38" (1/1) ... [2021-10-24 09:48:39,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a616bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:39, skipping insertion in model container [2021-10-24 09:48:39,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:48:38" (1/1) ... [2021-10-24 09:48:39,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:48:39,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:48:39,293 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_d9f9a137-f544-4e15-826b-d8db2ca872e0/sv-benchmarks/c/float-benchs/cast_union_tight.c[495,508] [2021-10-24 09:48:39,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:48:39,323 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:48:39,337 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_d9f9a137-f544-4e15-826b-d8db2ca872e0/sv-benchmarks/c/float-benchs/cast_union_tight.c[495,508] [2021-10-24 09:48:39,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:48:39,363 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:48:39,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:39 WrapperNode [2021-10-24 09:48:39,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:48:39,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:48:39,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:48:39,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:48:39,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:39" (1/1) ... [2021-10-24 09:48:39,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:39" (1/1) ... [2021-10-24 09:48:39,415 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:48:39,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:48:39,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:48:39,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:48:39,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:39" (1/1) ... [2021-10-24 09:48:39,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:39" (1/1) ... [2021-10-24 09:48:39,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:39" (1/1) ... [2021-10-24 09:48:39,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:39" (1/1) ... [2021-10-24 09:48:39,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:39" (1/1) ... [2021-10-24 09:48:39,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:39" (1/1) ... [2021-10-24 09:48:39,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:39" (1/1) ... [2021-10-24 09:48:39,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:48:39,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:48:39,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:48:39,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:48:39,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:39" (1/1) ... [2021-10-24 09:48:39,485 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:48:39,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:48:39,516 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:48:39,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:48:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:48:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:48:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-24 09:48:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 09:48:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:48:39,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:48:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 09:48:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 09:48:40,008 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:48:40,009 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-24 09:48:40,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:48:40 BoogieIcfgContainer [2021-10-24 09:48:40,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:48:40,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:48:40,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:48:40,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:48:40,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:48:38" (1/3) ... [2021-10-24 09:48:40,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259dd080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:48:40, skipping insertion in model container [2021-10-24 09:48:40,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:39" (2/3) ... [2021-10-24 09:48:40,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259dd080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:48:40, skipping insertion in model container [2021-10-24 09:48:40,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:48:40" (3/3) ... [2021-10-24 09:48:40,036 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c [2021-10-24 09:48:40,042 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:48:40,044 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:48:40,117 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:48:40,132 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 [2021-10-24 09:48:40,132 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 09:48:40,149 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) [2021-10-24 09:48:40,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-24 09:48:40,155 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:48:40,156 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-24 09:48:40,157 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:48:40,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:48:40,167 INFO L82 PathProgramCache]: Analyzing trace with hash 49237, now seen corresponding path program 1 times [2021-10-24 09:48:40,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:48:40,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289821302] [2021-10-24 09:48:40,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:40,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:48:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:48:40,420 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 09:48:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:48:40,520 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 09:48:40,526 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 09:48:40,528 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:48:40,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:48:40,542 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:48:40,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:48:40 BoogieIcfgContainer [2021-10-24 09:48:40,574 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:48:40,578 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:48:40,579 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:48:40,579 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:48:40,580 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:48:40" (3/4) ... [2021-10-24 09:48:40,585 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 09:48:40,585 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:48:40,591 INFO L168 Benchmark]: Toolchain (without parser) took 1599.92 ms. Allocated memory is still 123.7 MB. Free memory was 86.2 MB in the beginning and 66.7 MB in the end (delta: 19.6 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:48:40,592 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 123.7 MB. Free memory is still 102.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:48:40,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.13 ms. Allocated memory is still 123.7 MB. Free memory was 86.0 MB in the beginning and 99.7 MB in the end (delta: -13.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:48:40,595 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.94 ms. Allocated memory is still 123.7 MB. Free memory was 99.7 MB in the beginning and 98.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:48:40,596 INFO L168 Benchmark]: Boogie Preprocessor took 57.22 ms. Allocated memory is still 123.7 MB. Free memory was 98.1 MB in the beginning and 97.2 MB in the end (delta: 917.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:48:40,598 INFO L168 Benchmark]: RCFGBuilder took 537.22 ms. Allocated memory is still 123.7 MB. Free memory was 96.8 MB in the beginning and 82.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 09:48:40,600 INFO L168 Benchmark]: TraceAbstraction took 560.32 ms. Allocated memory is still 123.7 MB. Free memory was 81.7 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 09:48:40,608 INFO L168 Benchmark]: Witness Printer took 7.99 ms. Allocated memory is still 123.7 MB. Free memory was 67.1 MB in the beginning and 66.7 MB in the end (delta: 390.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:48:40,617 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 123.7 MB. Free memory is still 102.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 358.13 ms. Allocated memory is still 123.7 MB. Free memory was 86.0 MB in the beginning and 99.7 MB in the end (delta: -13.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.94 ms. Allocated memory is still 123.7 MB. Free memory was 99.7 MB in the beginning and 98.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.22 ms. Allocated memory is still 123.7 MB. Free memory was 98.1 MB in the beginning and 97.2 MB in the end (delta: 917.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 537.22 ms. Allocated memory is still 123.7 MB. Free memory was 96.8 MB in the beginning and 82.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 560.32 ms. Allocated memory is still 123.7 MB. Free memory was 81.7 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 7.99 ms. Allocated memory is still 123.7 MB. Free memory was 67.1 MB in the beginning and 66.7 MB in the end (delta: 390.0 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: 425.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 10.2ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.6ms, 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: 13.2ms SsaConstructionTime, 136.6ms 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 [2021-10-24 09:48:40,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/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 [2021-10-24 09:48:43,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:48:43,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:48:43,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:48:43,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:48:43,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:48:43,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:48:43,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:48:43,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:48:43,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:48:43,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:48:43,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:48:43,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:48:43,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:48:43,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:48:43,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:48:43,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:48:43,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:48:43,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:48:43,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:48:43,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:48:43,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:48:43,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:48:43,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:48:43,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:48:43,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:48:43,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:48:43,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:48:43,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:48:43,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:48:43,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:48:43,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:48:43,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:48:43,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:48:43,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:48:43,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:48:43,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:48:43,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:48:43,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:48:43,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:48:43,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:48:43,752 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 09:48:43,810 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:48:43,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:48:43,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:48:43,812 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:48:43,813 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:48:43,813 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:48:43,813 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:48:43,814 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:48:43,814 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:48:43,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:48:43,817 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:48:43,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:48:43,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:48:43,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:48:43,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:48:43,819 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:48:43,819 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:48:43,819 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 09:48:43,820 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 09:48:43,820 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:48:43,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:48:43,821 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:48:43,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:48:43,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:48:43,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 09:48:43,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:48:43,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:48:43,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:48:43,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:48:43,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:48:43,823 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 09:48:43,824 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 09:48:43,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:48:43,824 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:48:43,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:48:43,825 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_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 692e0f6bff326dae555773498e30d5c37d6c88dd20df70f4e6fff349bc763d90 [2021-10-24 09:48:44,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:48:44,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:48:44,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:48:44,253 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:48:44,254 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:48:44,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/float-benchs/cast_union_tight.c [2021-10-24 09:48:44,338 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/data/7046fae56/81acfc4726fb47fa8ec024c8fe3218d0/FLAG39f98c4c7 [2021-10-24 09:48:44,977 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:48:44,978 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/sv-benchmarks/c/float-benchs/cast_union_tight.c [2021-10-24 09:48:44,985 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/data/7046fae56/81acfc4726fb47fa8ec024c8fe3218d0/FLAG39f98c4c7 [2021-10-24 09:48:45,329 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/data/7046fae56/81acfc4726fb47fa8ec024c8fe3218d0 [2021-10-24 09:48:45,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:48:45,333 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:48:45,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:48:45,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:48:45,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:48:45,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:48:45" (1/1) ... [2021-10-24 09:48:45,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b1a1c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:45, skipping insertion in model container [2021-10-24 09:48:45,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:48:45" (1/1) ... [2021-10-24 09:48:45,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:48:45,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:48:45,515 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_d9f9a137-f544-4e15-826b-d8db2ca872e0/sv-benchmarks/c/float-benchs/cast_union_tight.c[495,508] [2021-10-24 09:48:45,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:48:45,572 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:48:45,610 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_d9f9a137-f544-4e15-826b-d8db2ca872e0/sv-benchmarks/c/float-benchs/cast_union_tight.c[495,508] [2021-10-24 09:48:45,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:48:45,653 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:48:45,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:45 WrapperNode [2021-10-24 09:48:45,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:48:45,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:48:45,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:48:45,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:48:45,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:45" (1/1) ... [2021-10-24 09:48:45,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:45" (1/1) ... [2021-10-24 09:48:45,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:48:45,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:48:45,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:48:45,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:48:45,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:45" (1/1) ... [2021-10-24 09:48:45,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:45" (1/1) ... [2021-10-24 09:48:45,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:45" (1/1) ... [2021-10-24 09:48:45,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:45" (1/1) ... [2021-10-24 09:48:45,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:45" (1/1) ... [2021-10-24 09:48:45,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:45" (1/1) ... [2021-10-24 09:48:45,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:45" (1/1) ... [2021-10-24 09:48:45,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:48:45,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:48:45,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:48:45,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:48:45,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:45" (1/1) ... [2021-10-24 09:48:45,810 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:48:45,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:48:45,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:48:45,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:48:45,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-24 09:48:45,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 09:48:45,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:48:45,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-24 09:48:45,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:48:45,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:48:45,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 09:48:45,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-24 09:48:46,519 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:48:46,519 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-24 09:48:46,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:48:46 BoogieIcfgContainer [2021-10-24 09:48:46,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:48:46,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:48:46,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:48:46,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:48:46,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:48:45" (1/3) ... [2021-10-24 09:48:46,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb218d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:48:46, skipping insertion in model container [2021-10-24 09:48:46,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:45" (2/3) ... [2021-10-24 09:48:46,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb218d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:48:46, skipping insertion in model container [2021-10-24 09:48:46,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:48:46" (3/3) ... [2021-10-24 09:48:46,532 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c [2021-10-24 09:48:46,539 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:48:46,539 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:48:46,616 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:48:46,624 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 [2021-10-24 09:48:46,625 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 09:48:46,640 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) [2021-10-24 09:48:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 09:48:46,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:48:46,646 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 09:48:46,647 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:48:46,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:48:46,654 INFO L82 PathProgramCache]: Analyzing trace with hash 28692803, now seen corresponding path program 1 times [2021-10-24 09:48:46,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:48:46,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003037958] [2021-10-24 09:48:46,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:46,669 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:48:46,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:48:46,675 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:48:46,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 09:48:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:48:47,025 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 09:48:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:48:47,253 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 09:48:47,255 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 09:48:47,256 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:48:47,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-24 09:48:47,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:48:47,467 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:48:47,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:48:47 BoogieIcfgContainer [2021-10-24 09:48:47,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:48:47,496 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:48:47,496 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:48:47,496 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:48:47,497 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:48:46" (3/4) ... [2021-10-24 09:48:47,504 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 09:48:47,569 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:48:47,569 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:48:47,572 INFO L168 Benchmark]: Toolchain (without parser) took 2236.79 ms. Allocated memory is still 58.7 MB. Free memory was 36.5 MB in the beginning and 29.7 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-10-24 09:48:47,573 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 58.7 MB. Free memory was 38.9 MB in the beginning and 38.8 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:48:47,574 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.42 ms. Allocated memory is still 58.7 MB. Free memory was 36.3 MB in the beginning and 40.6 MB in the end (delta: -4.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 09:48:47,574 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.89 ms. Allocated memory is still 58.7 MB. Free memory was 40.5 MB in the beginning and 38.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:48:47,575 INFO L168 Benchmark]: Boogie Preprocessor took 68.20 ms. Allocated memory is still 58.7 MB. Free memory was 38.9 MB in the beginning and 37.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:48:47,576 INFO L168 Benchmark]: RCFGBuilder took 723.07 ms. Allocated memory is still 58.7 MB. Free memory was 37.7 MB in the beginning and 27.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 09:48:47,577 INFO L168 Benchmark]: TraceAbstraction took 971.30 ms. Allocated memory is still 58.7 MB. Free memory was 26.6 MB in the beginning and 31.5 MB in the end (delta: -4.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:48:47,578 INFO L168 Benchmark]: Witness Printer took 73.41 ms. Allocated memory is still 58.7 MB. Free memory was 31.5 MB in the beginning and 29.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:48:47,592 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 58.7 MB. Free memory was 38.9 MB in the beginning and 38.8 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 319.42 ms. Allocated memory is still 58.7 MB. Free memory was 36.3 MB in the beginning and 40.6 MB in the end (delta: -4.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.89 ms. Allocated memory is still 58.7 MB. Free memory was 40.5 MB in the beginning and 38.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.20 ms. Allocated memory is still 58.7 MB. Free memory was 38.9 MB in the beginning and 37.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 723.07 ms. Allocated memory is still 58.7 MB. Free memory was 37.7 MB in the beginning and 27.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 971.30 ms. Allocated memory is still 58.7 MB. Free memory was 26.6 MB in the beginning and 31.5 MB in the end (delta: -4.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 73.41 ms. Allocated memory is still 58.7 MB. Free memory was 31.5 MB in the beginning and 29.7 MB in the end (delta: 1.8 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: 851.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 9.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.5ms, 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: 16.6ms SsaConstructionTime, 267.9ms 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! [2021-10-24 09:48:47,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f9a137-f544-4e15-826b-d8db2ca872e0/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...