./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_4+soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_4+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh --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 45357a5e0240095b58abad3d10ee040976002395978a0758aa9a5e9cd37d9633 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:38:31,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:38:31,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:38:31,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:38:31,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:38:31,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:38:31,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:38:31,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:38:31,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:38:31,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:38:31,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:38:31,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:38:31,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:38:31,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:38:31,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:38:31,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:38:31,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:38:31,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:38:31,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:38:31,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:38:31,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:38:31,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:38:31,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:38:31,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:38:31,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:38:31,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:38:31,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:38:31,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:38:31,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:38:31,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:38:31,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:38:31,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:38:31,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:38:31,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:38:31,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:38:31,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:38:31,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:38:31,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:38:31,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:38:31,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:38:31,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:38:31,490 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 14:38:31,508 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:38:31,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:38:31,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:38:31,521 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:38:31,522 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:38:31,522 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:38:31,522 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:38:31,522 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:38:31,523 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:38:31,523 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:38:31,523 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:38:31,523 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:38:31,523 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:38:31,524 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:38:31,524 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:38:31,524 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:38:31,524 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:38:31,524 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:38:31,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:38:31,525 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:38:31,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:38:31,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:38:31,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:38:31,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:38:31,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:38:31,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:38:31,526 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:38:31,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:38:31,527 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:38:31,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:38:31,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:38:31,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:38:31,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:38:31,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:38:31,528 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:38:31,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:38:31,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:38:31,529 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:38:31,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:38:31,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:38:31,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:38:31,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45357a5e0240095b58abad3d10ee040976002395978a0758aa9a5e9cd37d9633 [2022-12-14 14:38:31,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:38:31,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:38:31,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:38:31,760 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:38:31,760 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:38:31,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/combinations/square_4+soft_float_1-3a.c.cil.c [2022-12-14 14:38:34,337 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:38:34,492 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:38:34,493 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/sv-benchmarks/c/combinations/square_4+soft_float_1-3a.c.cil.c [2022-12-14 14:38:34,499 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/data/d688bd4ab/1e0c2e5f672048d18a9be8bafc3e45fa/FLAGf8260866a [2022-12-14 14:38:34,513 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/data/d688bd4ab/1e0c2e5f672048d18a9be8bafc3e45fa [2022-12-14 14:38:34,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:38:34,517 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:38:34,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:38:34,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:38:34,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:38:34,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:38:34" (1/1) ... [2022-12-14 14:38:34,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4acf9e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:34, skipping insertion in model container [2022-12-14 14:38:34,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:38:34" (1/1) ... [2022-12-14 14:38:34,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:38:34,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:38:34,652 WARN L237 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_b084fe3b-74a8-4dab-b480-6e75766700af/sv-benchmarks/c/combinations/square_4+soft_float_1-3a.c.cil.c[1999,2012] [2022-12-14 14:38:34,656 WARN L237 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_b084fe3b-74a8-4dab-b480-6e75766700af/sv-benchmarks/c/combinations/square_4+soft_float_1-3a.c.cil.c[2368,2381] [2022-12-14 14:38:34,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:38:34,694 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:38:34,704 WARN L237 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_b084fe3b-74a8-4dab-b480-6e75766700af/sv-benchmarks/c/combinations/square_4+soft_float_1-3a.c.cil.c[1999,2012] [2022-12-14 14:38:34,705 WARN L237 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_b084fe3b-74a8-4dab-b480-6e75766700af/sv-benchmarks/c/combinations/square_4+soft_float_1-3a.c.cil.c[2368,2381] [2022-12-14 14:38:34,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:38:34,739 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:38:34,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:34 WrapperNode [2022-12-14 14:38:34,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:38:34,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:38:34,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:38:34,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:38:34,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:34" (1/1) ... [2022-12-14 14:38:34,752 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:34" (1/1) ... [2022-12-14 14:38:34,771 INFO L138 Inliner]: procedures = 27, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 222 [2022-12-14 14:38:34,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:38:34,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:38:34,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:38:34,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:38:34,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:34" (1/1) ... [2022-12-14 14:38:34,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:34" (1/1) ... [2022-12-14 14:38:34,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:34" (1/1) ... [2022-12-14 14:38:34,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:34" (1/1) ... [2022-12-14 14:38:34,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:34" (1/1) ... [2022-12-14 14:38:34,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:34" (1/1) ... [2022-12-14 14:38:34,792 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:34" (1/1) ... [2022-12-14 14:38:34,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:34" (1/1) ... [2022-12-14 14:38:34,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:38:34,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:38:34,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:38:34,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:38:34,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:34" (1/1) ... [2022-12-14 14:38:34,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:38:34,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:38:34,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:38:34,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:38:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:38:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-12-14 14:38:34,853 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-12-14 14:38:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:38:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:38:34,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:38:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 14:38:34,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 14:38:34,923 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:38:34,925 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:38:35,267 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:38:35,410 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:38:35,410 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 14:38:35,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:38:35 BoogieIcfgContainer [2022-12-14 14:38:35,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:38:35,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:38:35,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:38:35,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:38:35,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:38:34" (1/3) ... [2022-12-14 14:38:35,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7889e79e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:38:35, skipping insertion in model container [2022-12-14 14:38:35,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:34" (2/3) ... [2022-12-14 14:38:35,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7889e79e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:38:35, skipping insertion in model container [2022-12-14 14:38:35,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:38:35" (3/3) ... [2022-12-14 14:38:35,419 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_1-3a.c.cil.c [2022-12-14 14:38:35,433 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:38:35,433 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 14:38:35,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:38:35,474 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@557b4d25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:38:35,474 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 14:38:35,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 43 states have internal predecessors, (60), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 14:38:35,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 14:38:35,482 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:38:35,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 14:38:35,482 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:38:35,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:38:35,486 INFO L85 PathProgramCache]: Analyzing trace with hash 12709575, now seen corresponding path program 1 times [2022-12-14 14:38:35,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:38:35,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909514638] [2022-12-14 14:38:35,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:38:35,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:38:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:38:35,565 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 14:38:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:38:35,585 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 14:38:35,587 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 14:38:35,588 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-14 14:38:35,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-12-14 14:38:35,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:38:35,593 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 14:38:35,596 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:38:35,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:38:35 BoogieIcfgContainer [2022-12-14 14:38:35,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:38:35,609 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:38:35,609 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:38:35,609 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:38:35,609 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:38:35" (3/4) ... [2022-12-14 14:38:35,612 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 14:38:35,612 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:38:35,613 INFO L158 Benchmark]: Toolchain (without parser) took 1096.34ms. Allocated memory was 125.8MB in the beginning and 199.2MB in the end (delta: 73.4MB). Free memory was 85.8MB in the beginning and 116.8MB in the end (delta: -31.0MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. [2022-12-14 14:38:35,613 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 125.8MB. Free memory is still 100.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:38:35,614 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.44ms. Allocated memory is still 125.8MB. Free memory was 85.4MB in the beginning and 70.7MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 14:38:35,614 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.77ms. Allocated memory is still 125.8MB. Free memory was 70.7MB in the beginning and 68.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:38:35,614 INFO L158 Benchmark]: Boogie Preprocessor took 22.96ms. Allocated memory is still 125.8MB. Free memory was 68.3MB in the beginning and 66.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:38:35,615 INFO L158 Benchmark]: RCFGBuilder took 616.94ms. Allocated memory was 125.8MB in the beginning and 199.2MB in the end (delta: 73.4MB). Free memory was 66.2MB in the beginning and 131.5MB in the end (delta: -65.3MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2022-12-14 14:38:35,615 INFO L158 Benchmark]: TraceAbstraction took 194.04ms. Allocated memory is still 199.2MB. Free memory was 130.7MB in the beginning and 117.3MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 14:38:35,615 INFO L158 Benchmark]: Witness Printer took 3.53ms. Allocated memory is still 199.2MB. Free memory was 117.3MB in the beginning and 116.8MB in the end (delta: 500.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:38:35,618 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 125.8MB. Free memory is still 100.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.44ms. Allocated memory is still 125.8MB. Free memory was 85.4MB in the beginning and 70.7MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.77ms. Allocated memory is still 125.8MB. Free memory was 70.7MB in the beginning and 68.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.96ms. Allocated memory is still 125.8MB. Free memory was 68.3MB in the beginning and 66.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 616.94ms. Allocated memory was 125.8MB in the beginning and 199.2MB in the end (delta: 73.4MB). Free memory was 66.2MB in the beginning and 131.5MB in the end (delta: -65.3MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. * TraceAbstraction took 194.04ms. Allocated memory is still 199.2MB. Free memory was 130.7MB in the beginning and 117.3MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 3.53ms. Allocated memory is still 199.2MB. Free memory was 117.3MB in the beginning and 116.8MB in the end (delta: 500.8kB). 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: [L402] COND TRUE __VERIFIER_nondet_int() [L403] 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=53, x=53] [L47] COND TRUE !(result >= 0.0f && result < 1.39844f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - 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, 53 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred 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 [2022-12-14 14:38:35,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_4+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh --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 45357a5e0240095b58abad3d10ee040976002395978a0758aa9a5e9cd37d9633 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:38:37,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:38:37,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:38:37,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:38:37,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:38:37,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:38:37,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:38:37,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:38:37,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:38:37,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:38:37,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:38:37,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:38:37,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:38:37,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:38:37,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:38:37,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:38:37,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:38:37,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:38:37,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:38:37,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:38:37,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:38:37,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:38:37,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:38:37,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:38:37,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:38:37,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:38:37,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:38:37,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:38:37,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:38:37,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:38:37,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:38:37,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:38:37,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:38:37,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:38:37,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:38:37,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:38:37,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:38:37,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:38:37,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:38:37,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:38:37,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:38:37,308 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 14:38:37,324 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:38:37,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:38:37,325 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:38:37,325 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:38:37,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:38:37,325 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:38:37,325 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:38:37,326 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:38:37,326 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:38:37,326 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:38:37,326 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:38:37,326 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:38:37,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:38:37,327 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:38:37,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:38:37,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:38:37,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:38:37,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:38:37,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:38:37,327 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 14:38:37,327 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 14:38:37,328 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 14:38:37,328 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:38:37,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:38:37,328 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:38:37,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:38:37,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:38:37,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 14:38:37,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:38:37,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:38:37,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:38:37,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:38:37,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:38:37,329 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 14:38:37,329 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 14:38:37,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:38:37,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:38:37,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 14:38:37,330 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_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45357a5e0240095b58abad3d10ee040976002395978a0758aa9a5e9cd37d9633 [2022-12-14 14:38:37,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:38:37,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:38:37,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:38:37,547 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:38:37,548 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:38:37,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/combinations/square_4+soft_float_1-3a.c.cil.c [2022-12-14 14:38:40,107 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:38:40,270 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:38:40,270 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/sv-benchmarks/c/combinations/square_4+soft_float_1-3a.c.cil.c [2022-12-14 14:38:40,277 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/data/3041e3394/db15056e6f9341c981cba9322bcff043/FLAGe79374429 [2022-12-14 14:38:40,287 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/data/3041e3394/db15056e6f9341c981cba9322bcff043 [2022-12-14 14:38:40,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:38:40,291 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:38:40,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:38:40,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:38:40,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:38:40,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:38:40" (1/1) ... [2022-12-14 14:38:40,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2067c03c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:40, skipping insertion in model container [2022-12-14 14:38:40,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:38:40" (1/1) ... [2022-12-14 14:38:40,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:38:40,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:38:40,432 WARN L237 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_b084fe3b-74a8-4dab-b480-6e75766700af/sv-benchmarks/c/combinations/square_4+soft_float_1-3a.c.cil.c[1999,2012] [2022-12-14 14:38:40,437 WARN L237 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_b084fe3b-74a8-4dab-b480-6e75766700af/sv-benchmarks/c/combinations/square_4+soft_float_1-3a.c.cil.c[2368,2381] [2022-12-14 14:38:40,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:38:40,482 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:38:40,492 WARN L237 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_b084fe3b-74a8-4dab-b480-6e75766700af/sv-benchmarks/c/combinations/square_4+soft_float_1-3a.c.cil.c[1999,2012] [2022-12-14 14:38:40,493 WARN L237 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_b084fe3b-74a8-4dab-b480-6e75766700af/sv-benchmarks/c/combinations/square_4+soft_float_1-3a.c.cil.c[2368,2381] [2022-12-14 14:38:40,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:38:40,523 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:38:40,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:40 WrapperNode [2022-12-14 14:38:40,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:38:40,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:38:40,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:38:40,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:38:40,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:40" (1/1) ... [2022-12-14 14:38:40,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:40" (1/1) ... [2022-12-14 14:38:40,563 INFO L138 Inliner]: procedures = 28, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 164 [2022-12-14 14:38:40,563 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:38:40,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:38:40,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:38:40,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:38:40,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:40" (1/1) ... [2022-12-14 14:38:40,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:40" (1/1) ... [2022-12-14 14:38:40,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:40" (1/1) ... [2022-12-14 14:38:40,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:40" (1/1) ... [2022-12-14 14:38:40,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:40" (1/1) ... [2022-12-14 14:38:40,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:40" (1/1) ... [2022-12-14 14:38:40,591 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:40" (1/1) ... [2022-12-14 14:38:40,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:40" (1/1) ... [2022-12-14 14:38:40,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:38:40,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:38:40,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:38:40,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:38:40,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:40" (1/1) ... [2022-12-14 14:38:40,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:38:40,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:38:40,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:38:40,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:38:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:38:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 14:38:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-12-14 14:38:40,661 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-12-14 14:38:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:38:40,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:38:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 14:38:40,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 14:38:40,721 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:38:40,722 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:38:43,149 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:38:43,156 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:38:43,156 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 14:38:43,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:38:43 BoogieIcfgContainer [2022-12-14 14:38:43,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:38:43,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:38:43,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:38:43,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:38:43,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:38:40" (1/3) ... [2022-12-14 14:38:43,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649b81de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:38:43, skipping insertion in model container [2022-12-14 14:38:43,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:38:40" (2/3) ... [2022-12-14 14:38:43,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649b81de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:38:43, skipping insertion in model container [2022-12-14 14:38:43,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:38:43" (3/3) ... [2022-12-14 14:38:43,165 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_1-3a.c.cil.c [2022-12-14 14:38:43,177 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:38:43,177 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 14:38:43,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:38:43,223 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7e3025d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:38:43,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 14:38:43,227 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 14:38:43,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 14:38:43,232 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:38:43,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:38:43,233 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:38:43,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:38:43,237 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-12-14 14:38:43,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:38:43,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393478491] [2022-12-14 14:38:43,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:38:43,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:38:43,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:38:43,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:38:43,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 14:38:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:38:43,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 14:38:43,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:38:43,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:38:43,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:38:43,744 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:38:43,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393478491] [2022-12-14 14:38:43,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393478491] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:38:43,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:38:43,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:38:43,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742414015] [2022-12-14 14:38:43,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:38:43,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 14:38:43,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:38:43,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 14:38:43,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:38:43,776 INFO L87 Difference]: Start difference. First operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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) [2022-12-14 14:38:43,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:38:43,797 INFO L93 Difference]: Finished difference Result 157 states and 249 transitions. [2022-12-14 14:38:43,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 14:38:43,799 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 [2022-12-14 14:38:43,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:38:43,804 INFO L225 Difference]: With dead ends: 157 [2022-12-14 14:38:43,805 INFO L226 Difference]: Without dead ends: 74 [2022-12-14 14:38:43,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:38:43,809 INFO L413 NwaCegarLoop]: 117 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, 117 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 [2022-12-14 14:38:43,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:38:43,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-12-14 14:38:43,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-12-14 14:38:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 64 states have internal predecessors, (91), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 14:38:43,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2022-12-14 14:38:43,861 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 108 transitions. Word has length 7 [2022-12-14 14:38:43,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:38:43,862 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 108 transitions. [2022-12-14 14:38:43,862 INFO L496 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) [2022-12-14 14:38:43,862 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 108 transitions. [2022-12-14 14:38:43,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 14:38:43,863 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:38:43,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:38:43,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:38:44,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:38:44,065 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:38:44,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:38:44,067 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-12-14 14:38:44,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:38:44,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912729162] [2022-12-14 14:38:44,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:38:44,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:38:44,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:38:44,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:38:44,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b084fe3b-74a8-4dab-b480-6e75766700af/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process