./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_1+soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_1+soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P --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 86314e6cd12102dcba0a36e5967a163555a00f3305c4ea506b55d42491a26d21 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:28:56,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:28:56,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:28:56,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:28:56,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:28:56,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:28:56,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:28:56,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:28:56,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:28:56,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:28:56,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:28:56,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:28:56,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:28:56,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:28:56,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:28:56,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:28:56,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:28:56,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:28:56,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:28:56,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:28:56,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:28:56,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:28:56,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:28:56,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:28:56,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:28:56,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:28:56,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:28:56,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:28:56,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:28:56,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:28:56,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:28:56,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:28:56,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:28:56,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:28:56,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:28:56,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:28:56,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:28:56,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:28:56,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:28:56,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:28:56,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:28:56,437 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:28:56,491 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:28:56,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:28:56,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:28:56,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:28:56,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:28:56,502 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:28:56,502 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:28:56,503 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:28:56,503 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:28:56,503 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:28:56,505 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:28:56,505 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:28:56,505 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:28:56,506 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:28:56,506 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:28:56,506 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:28:56,507 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:28:56,507 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:28:56,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:28:56,508 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:28:56,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:28:56,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:28:56,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:28:56,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:28:56,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:28:56,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:28:56,512 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:28:56,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:28:56,513 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:28:56,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:28:56,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:28:56,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:28:56,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:28:56,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:28:56,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:28:56,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:28:56,515 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:28:56,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:28:56,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:28:56,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:28:56,516 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:28:56,517 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_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86314e6cd12102dcba0a36e5967a163555a00f3305c4ea506b55d42491a26d21 [2021-11-21 01:28:56,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:28:56,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:28:56,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:28:56,898 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:28:56,898 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:28:56,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/combinations/square_1+soft_float_3a.c.cil.c [2021-11-21 01:28:56,992 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/data/1196994f7/361c09974df448dfa6674a4301677ebc/FLAGbf0c76c3a [2021-11-21 01:28:57,537 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:28:57,538 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/sv-benchmarks/c/combinations/square_1+soft_float_3a.c.cil.c [2021-11-21 01:28:57,549 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/data/1196994f7/361c09974df448dfa6674a4301677ebc/FLAGbf0c76c3a [2021-11-21 01:28:57,884 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/data/1196994f7/361c09974df448dfa6674a4301677ebc [2021-11-21 01:28:57,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:28:57,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:28:57,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:28:57,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:28:57,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:28:57,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:28:57" (1/1) ... [2021-11-21 01:28:57,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37416beb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:57, skipping insertion in model container [2021-11-21 01:28:57,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:28:57" (1/1) ... [2021-11-21 01:28:57,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:28:57,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:28:58,178 WARN L230 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_4a095f28-f125-4d27-9f79-6a3f601bd8fc/sv-benchmarks/c/combinations/square_1+soft_float_3a.c.cil.c[1996,2009] [2021-11-21 01:28:58,184 WARN L230 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_4a095f28-f125-4d27-9f79-6a3f601bd8fc/sv-benchmarks/c/combinations/square_1+soft_float_3a.c.cil.c[2365,2378] [2021-11-21 01:28:58,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:28:58,241 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:28:58,261 WARN L230 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_4a095f28-f125-4d27-9f79-6a3f601bd8fc/sv-benchmarks/c/combinations/square_1+soft_float_3a.c.cil.c[1996,2009] [2021-11-21 01:28:58,268 WARN L230 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_4a095f28-f125-4d27-9f79-6a3f601bd8fc/sv-benchmarks/c/combinations/square_1+soft_float_3a.c.cil.c[2365,2378] [2021-11-21 01:28:58,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:28:58,318 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:28:58,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:58 WrapperNode [2021-11-21 01:28:58,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:28:58,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:28:58,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:28:58,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:28:58,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:58" (1/1) ... [2021-11-21 01:28:58,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:58" (1/1) ... [2021-11-21 01:28:58,367 INFO L137 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 133 [2021-11-21 01:28:58,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:28:58,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:28:58,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:28:58,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:28:58,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:58" (1/1) ... [2021-11-21 01:28:58,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:58" (1/1) ... [2021-11-21 01:28:58,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:58" (1/1) ... [2021-11-21 01:28:58,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:58" (1/1) ... [2021-11-21 01:28:58,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:58" (1/1) ... [2021-11-21 01:28:58,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:58" (1/1) ... [2021-11-21 01:28:58,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:58" (1/1) ... [2021-11-21 01:28:58,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:28:58,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:28:58,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:28:58,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:28:58,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:58" (1/1) ... [2021-11-21 01:28:58,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:28:58,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:28:58,486 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:28:58,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:28:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:28:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-21 01:28:58,556 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-21 01:28:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:28:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:28:58,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:28:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:28:58,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:28:58,676 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:28:58,679 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:28:58,995 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:28:59,075 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:28:59,076 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 01:28:59,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:28:59 BoogieIcfgContainer [2021-11-21 01:28:59,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:28:59,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:28:59,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:28:59,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:28:59,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:28:57" (1/3) ... [2021-11-21 01:28:59,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13062fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:28:59, skipping insertion in model container [2021-11-21 01:28:59,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:58" (2/3) ... [2021-11-21 01:28:59,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13062fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:28:59, skipping insertion in model container [2021-11-21 01:28:59,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:28:59" (3/3) ... [2021-11-21 01:28:59,096 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_3a.c.cil.c [2021-11-21 01:28:59,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:28:59,103 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 01:28:59,167 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:28:59,175 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 [2021-11-21 01:28:59,175 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 01:28:59,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 38 states have internal predecessors, (55), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-21 01:28:59,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 01:28:59,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:59,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 01:28:59,205 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:28:59,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:59,211 INFO L85 PathProgramCache]: Analyzing trace with hash 7112936, now seen corresponding path program 1 times [2021-11-21 01:28:59,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:59,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147305425] [2021-11-21 01:28:59,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:59,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:28:59,322 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:28:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:28:59,377 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 01:28:59,382 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:28:59,384 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-21 01:28:59,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-21 01:28:59,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:28:59,396 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-21 01:28:59,399 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:28:59,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:28:59 BoogieIcfgContainer [2021-11-21 01:28:59,438 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:28:59,444 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:28:59,444 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:28:59,445 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:28:59,445 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:28:59" (3/4) ... [2021-11-21 01:28:59,455 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 01:28:59,455 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:28:59,457 INFO L158 Benchmark]: Toolchain (without parser) took 1567.75ms. Allocated memory is still 121.6MB. Free memory was 82.6MB in the beginning and 58.3MB in the end (delta: 24.3MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2021-11-21 01:28:59,458 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory is still 99.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:28:59,459 INFO L158 Benchmark]: CACSL2BoogieTranslator took 423.78ms. Allocated memory is still 121.6MB. Free memory was 82.3MB in the beginning and 91.8MB in the end (delta: -9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:28:59,460 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.73ms. Allocated memory is still 121.6MB. Free memory was 91.8MB in the beginning and 89.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:28:59,461 INFO L158 Benchmark]: Boogie Preprocessor took 38.01ms. Allocated memory is still 121.6MB. Free memory was 89.8MB in the beginning and 88.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:28:59,470 INFO L158 Benchmark]: RCFGBuilder took 673.41ms. Allocated memory is still 121.6MB. Free memory was 88.7MB in the beginning and 71.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-21 01:28:59,471 INFO L158 Benchmark]: TraceAbstraction took 352.24ms. Allocated memory is still 121.6MB. Free memory was 71.4MB in the beginning and 58.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 01:28:59,472 INFO L158 Benchmark]: Witness Printer took 11.00ms. Allocated memory is still 121.6MB. Free memory was 58.8MB in the beginning and 58.3MB in the end (delta: 510.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:28:59,478 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory is still 99.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 423.78ms. Allocated memory is still 121.6MB. Free memory was 82.3MB in the beginning and 91.8MB in the end (delta: -9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.73ms. Allocated memory is still 121.6MB. Free memory was 91.8MB in the beginning and 89.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.01ms. Allocated memory is still 121.6MB. Free memory was 89.8MB in the beginning and 88.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 673.41ms. Allocated memory is still 121.6MB. Free memory was 88.7MB in the beginning and 71.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 352.24ms. Allocated memory is still 121.6MB. Free memory was 71.4MB in the beginning and 58.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 11.00ms. Allocated memory is still 121.6MB. Free memory was 58.8MB in the beginning and 58.3MB in the end (delta: 510.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L320] COND TRUE __VERIFIER_nondet_int() [L321] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 45 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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 [2021-11-21 01:28:59,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_1+soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P --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 86314e6cd12102dcba0a36e5967a163555a00f3305c4ea506b55d42491a26d21 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:29:02,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:29:02,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:29:02,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:29:02,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:29:02,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:29:02,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:29:02,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:29:02,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:29:02,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:29:02,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:29:02,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:29:02,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:29:02,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:29:02,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:29:02,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:29:02,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:29:02,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:29:02,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:29:02,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:29:02,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:29:02,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:29:02,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:29:02,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:29:02,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:29:02,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:29:02,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:29:02,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:29:02,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:29:02,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:29:02,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:29:02,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:29:02,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:29:02,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:29:02,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:29:02,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:29:02,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:29:02,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:29:02,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:29:02,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:29:02,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:29:02,589 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 01:29:02,652 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:29:02,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:29:02,653 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:29:02,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:29:02,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:29:02,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:29:02,655 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:29:02,656 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:29:02,656 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:29:02,656 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:29:02,657 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:29:02,658 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:29:02,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:29:02,660 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:29:02,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:29:02,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:29:02,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:29:02,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:29:02,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:29:02,662 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:29:02,662 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:29:02,662 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:29:02,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:29:02,663 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:29:02,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:29:02,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:29:02,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:29:02,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:29:02,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:29:02,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:29:02,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:29:02,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:29:02,666 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:29:02,666 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:29:02,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:29:02,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:29:02,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:29:02,667 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_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86314e6cd12102dcba0a36e5967a163555a00f3305c4ea506b55d42491a26d21 [2021-11-21 01:29:03,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:29:03,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:29:03,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:29:03,194 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:29:03,195 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:29:03,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/combinations/square_1+soft_float_3a.c.cil.c [2021-11-21 01:29:03,281 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/data/78626d438/e52cdc5699804f1a8b1ccfbed0ac44a3/FLAGd6c47824a [2021-11-21 01:29:03,997 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:29:03,997 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/sv-benchmarks/c/combinations/square_1+soft_float_3a.c.cil.c [2021-11-21 01:29:04,008 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/data/78626d438/e52cdc5699804f1a8b1ccfbed0ac44a3/FLAGd6c47824a [2021-11-21 01:29:04,321 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/data/78626d438/e52cdc5699804f1a8b1ccfbed0ac44a3 [2021-11-21 01:29:04,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:29:04,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:29:04,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:29:04,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:29:04,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:29:04,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:29:04" (1/1) ... [2021-11-21 01:29:04,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7407fa79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:04, skipping insertion in model container [2021-11-21 01:29:04,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:29:04" (1/1) ... [2021-11-21 01:29:04,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:29:04,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:29:04,618 WARN L230 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_4a095f28-f125-4d27-9f79-6a3f601bd8fc/sv-benchmarks/c/combinations/square_1+soft_float_3a.c.cil.c[1996,2009] [2021-11-21 01:29:04,624 WARN L230 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_4a095f28-f125-4d27-9f79-6a3f601bd8fc/sv-benchmarks/c/combinations/square_1+soft_float_3a.c.cil.c[2365,2378] [2021-11-21 01:29:04,766 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:29:04,788 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:29:04,821 WARN L230 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_4a095f28-f125-4d27-9f79-6a3f601bd8fc/sv-benchmarks/c/combinations/square_1+soft_float_3a.c.cil.c[1996,2009] [2021-11-21 01:29:04,836 WARN L230 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_4a095f28-f125-4d27-9f79-6a3f601bd8fc/sv-benchmarks/c/combinations/square_1+soft_float_3a.c.cil.c[2365,2378] [2021-11-21 01:29:04,901 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:29:04,921 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:29:04,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:04 WrapperNode [2021-11-21 01:29:04,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:29:04,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:29:04,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:29:04,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:29:04,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:04" (1/1) ... [2021-11-21 01:29:04,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:04" (1/1) ... [2021-11-21 01:29:05,003 INFO L137 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2021-11-21 01:29:05,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:29:05,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:29:05,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:29:05,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:29:05,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:04" (1/1) ... [2021-11-21 01:29:05,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:04" (1/1) ... [2021-11-21 01:29:05,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:04" (1/1) ... [2021-11-21 01:29:05,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:04" (1/1) ... [2021-11-21 01:29:05,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:04" (1/1) ... [2021-11-21 01:29:05,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:04" (1/1) ... [2021-11-21 01:29:05,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:04" (1/1) ... [2021-11-21 01:29:05,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:29:05,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:29:05,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:29:05,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:29:05,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:04" (1/1) ... [2021-11-21 01:29:05,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:29:05,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:29:05,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:29:05,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:29:05,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:29:05,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:29:05,204 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-21 01:29:05,205 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-21 01:29:05,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:29:05,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:29:05,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:29:05,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:29:05,306 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:29:05,308 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:29:07,868 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:29:07,878 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:29:07,878 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 01:29:07,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:29:07 BoogieIcfgContainer [2021-11-21 01:29:07,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:29:07,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:29:07,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:29:07,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:29:07,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:29:04" (1/3) ... [2021-11-21 01:29:07,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fe60a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:29:07, skipping insertion in model container [2021-11-21 01:29:07,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:04" (2/3) ... [2021-11-21 01:29:07,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fe60a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:29:07, skipping insertion in model container [2021-11-21 01:29:07,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:29:07" (3/3) ... [2021-11-21 01:29:07,909 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_3a.c.cil.c [2021-11-21 01:29:07,918 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:29:07,918 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 01:29:07,978 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:29:07,984 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 [2021-11-21 01:29:07,984 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 01:29:08,002 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 50 states have (on average 1.56) internal successors, (78), 53 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-21 01:29:08,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:29:08,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:08,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:29:08,009 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:08,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:08,015 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-21 01:29:08,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:29:08,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99275085] [2021-11-21 01:29:08,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:08,032 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:29:08,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:29:08,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:29:08,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:29:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:08,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 01:29:08,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:29:08,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:29:08,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:29:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:29:08,994 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:29:08,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99275085] [2021-11-21 01:29:08,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99275085] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:29:08,995 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:29:08,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:29:08,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123566994] [2021-11-21 01:29:08,999 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:29:09,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:29:09,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:29:09,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:29:09,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:29:09,048 INFO L87 Difference]: Start difference. First operand has 60 states, 50 states have (on average 1.56) internal successors, (78), 53 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:29:09,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:09,113 INFO L93 Difference]: Finished difference Result 115 states and 173 transitions. [2021-11-21 01:29:09,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:29:09,117 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-21 01:29:09,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:09,125 INFO L225 Difference]: With dead ends: 115 [2021-11-21 01:29:09,126 INFO L226 Difference]: Without dead ends: 51 [2021-11-21 01:29:09,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:29:09,136 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:09,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:29:09,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-21 01:29:09,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-21 01:29:09,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 44 states have internal predecessors, (61), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 01:29:09,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 70 transitions. [2021-11-21 01:29:09,192 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 70 transitions. Word has length 7 [2021-11-21 01:29:09,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:09,192 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 70 transitions. [2021-11-21 01:29:09,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:29:09,193 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 70 transitions. [2021-11-21 01:29:09,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:29:09,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:09,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:29:09,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:29:09,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:29:09,399 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:09,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:09,401 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-21 01:29:09,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:29:09,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371490665] [2021-11-21 01:29:09,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:09,402 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:29:09,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:29:09,404 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:29:09,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:30:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:30:24,369 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:30:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:30:38,763 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-21 01:30:38,764 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:30:38,766 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-21 01:30:38,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-21 01:30:38,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:30:38,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:30:38,974 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-21 01:30:38,977 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:30:39,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:30:39 BoogieIcfgContainer [2021-11-21 01:30:39,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:30:39,006 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:30:39,006 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:30:39,007 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:30:39,007 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:29:07" (3/4) ... [2021-11-21 01:30:39,010 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-21 01:30:39,052 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 01:30:39,052 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:30:39,071 INFO L158 Benchmark]: Toolchain (without parser) took 94743.22ms. Allocated memory was 56.6MB in the beginning and 88.1MB in the end (delta: 31.5MB). Free memory was 34.8MB in the beginning and 69.6MB in the end (delta: -34.8MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2021-11-21 01:30:39,073 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 56.6MB. Free memory was 37.3MB in the beginning and 37.2MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:30:39,074 INFO L158 Benchmark]: CACSL2BoogieTranslator took 591.46ms. Allocated memory was 56.6MB in the beginning and 88.1MB in the end (delta: 31.5MB). Free memory was 34.6MB in the beginning and 67.5MB in the end (delta: -33.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 01:30:39,075 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.57ms. Allocated memory is still 88.1MB. Free memory was 67.5MB in the beginning and 65.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:30:39,076 INFO L158 Benchmark]: Boogie Preprocessor took 91.06ms. Allocated memory is still 88.1MB. Free memory was 65.6MB in the beginning and 63.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:30:39,076 INFO L158 Benchmark]: RCFGBuilder took 2784.79ms. Allocated memory is still 88.1MB. Free memory was 63.9MB in the beginning and 50.1MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 01:30:39,077 INFO L158 Benchmark]: TraceAbstraction took 91108.36ms. Allocated memory is still 88.1MB. Free memory was 70.6MB in the beginning and 45.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-21 01:30:39,077 INFO L158 Benchmark]: Witness Printer took 63.60ms. Allocated memory is still 88.1MB. Free memory was 45.4MB in the beginning and 69.6MB in the end (delta: -24.2MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2021-11-21 01:30:39,080 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 56.6MB. Free memory was 37.3MB in the beginning and 37.2MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 591.46ms. Allocated memory was 56.6MB in the beginning and 88.1MB in the end (delta: 31.5MB). Free memory was 34.6MB in the beginning and 67.5MB in the end (delta: -33.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.57ms. Allocated memory is still 88.1MB. Free memory was 67.5MB in the beginning and 65.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 91.06ms. Allocated memory is still 88.1MB. Free memory was 65.6MB in the beginning and 63.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2784.79ms. Allocated memory is still 88.1MB. Free memory was 63.9MB in the beginning and 50.1MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 91108.36ms. Allocated memory is still 88.1MB. Free memory was 70.6MB in the beginning and 45.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 63.60ms. Allocated memory is still 88.1MB. Free memory was 45.4MB in the beginning and 69.6MB in the end (delta: -24.2MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 48]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L320] COND TRUE __VERIFIER_nondet_int() [L321] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0.984276533126831, result=1.3939731121063232, x=0.984276533126831] [L47] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=0.984276533126831, result=1.3939731121063232, x=0.984276533126831] [L48] reach_error() VAL [IN=0.984276533126831, result=1.3939731121063232, x=0.984276533126831] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 60 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 91.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 81 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 75.7s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-21 01:30:39,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095f28-f125-4d27-9f79-6a3f601bd8fc/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE