./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float22.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float22.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --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 a1a8d839de719affcdce7d478fe01c72ef8bd5c3f8508077dd75702521e0650f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:32:25,358 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:32:25,454 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:32:25,460 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:32:25,460 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:32:25,489 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:32:25,490 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:32:25,491 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:32:25,492 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:32:25,493 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:32:25,494 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:32:25,494 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:32:25,495 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:32:25,495 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:32:25,495 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:32:25,498 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:32:25,499 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:32:25,499 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:32:25,499 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:32:25,500 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:32:25,500 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:32:25,501 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:32:25,505 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:32:25,506 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:32:25,506 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:32:25,506 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:32:25,506 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:32:25,507 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:32:25,507 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:32:25,507 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:32:25,508 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:32:25,508 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:32:25,508 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:32:25,509 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:32:25,510 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:32:25,511 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:32:25,511 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:32:25,512 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:32:25,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:32:25,512 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:32:25,513 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:32:25,513 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:32:25,514 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:32:25,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:32:25,515 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:32:25,515 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:32:25,515 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:32:25,516 INFO L153 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_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1a8d839de719affcdce7d478fe01c72ef8bd5c3f8508077dd75702521e0650f [2024-11-02 12:32:25,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:32:25,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:32:25,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:32:25,822 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:32:25,823 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:32:25,824 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/floats-cbmc-regression/float22.i Unable to find full path for "g++" [2024-11-02 12:32:28,182 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:32:28,473 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:32:28,474 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/sv-benchmarks/c/floats-cbmc-regression/float22.i [2024-11-02 12:32:28,483 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/bin/utaipan-verify-DbMuA5NWw2/data/207bd38ab/dfce99f45c96484786b31265a24879bd/FLAGbffc3e5bb [2024-11-02 12:32:28,777 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/bin/utaipan-verify-DbMuA5NWw2/data/207bd38ab/dfce99f45c96484786b31265a24879bd [2024-11-02 12:32:28,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:32:28,782 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:32:28,783 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:32:28,783 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:32:28,789 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:32:28,790 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:32:28" (1/1) ... [2024-11-02 12:32:28,791 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a8a6474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:28, skipping insertion in model container [2024-11-02 12:32:28,791 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:32:28" (1/1) ... [2024-11-02 12:32:28,816 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:32:29,079 WARN L251 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_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/sv-benchmarks/c/floats-cbmc-regression/float22.i[2558,2571] [2024-11-02 12:32:29,100 WARN L251 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_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/sv-benchmarks/c/floats-cbmc-regression/float22.i[2753,2766] [2024-11-02 12:32:29,104 WARN L251 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_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/sv-benchmarks/c/floats-cbmc-regression/float22.i[2881,2894] [2024-11-02 12:32:29,110 WARN L251 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_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/sv-benchmarks/c/floats-cbmc-regression/float22.i[3073,3086] [2024-11-02 12:32:29,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:32:29,136 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:32:29,184 WARN L251 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_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/sv-benchmarks/c/floats-cbmc-regression/float22.i[2558,2571] [2024-11-02 12:32:29,188 WARN L251 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_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/sv-benchmarks/c/floats-cbmc-regression/float22.i[2753,2766] [2024-11-02 12:32:29,193 WARN L251 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_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/sv-benchmarks/c/floats-cbmc-regression/float22.i[2881,2894] [2024-11-02 12:32:29,200 WARN L251 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_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/sv-benchmarks/c/floats-cbmc-regression/float22.i[3073,3086] [2024-11-02 12:32:29,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:32:29,235 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:32:29,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:29 WrapperNode [2024-11-02 12:32:29,235 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:32:29,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:32:29,237 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:32:29,237 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:32:29,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:29" (1/1) ... [2024-11-02 12:32:29,252 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:29" (1/1) ... [2024-11-02 12:32:29,277 INFO L138 Inliner]: procedures = 21, calls = 80, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 121 [2024-11-02 12:32:29,277 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:32:29,278 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:32:29,278 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:32:29,278 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:32:29,293 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:29" (1/1) ... [2024-11-02 12:32:29,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:29" (1/1) ... [2024-11-02 12:32:29,301 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:29" (1/1) ... [2024-11-02 12:32:29,302 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:29" (1/1) ... [2024-11-02 12:32:29,319 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:29" (1/1) ... [2024-11-02 12:32:29,321 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:29" (1/1) ... [2024-11-02 12:32:29,323 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:29" (1/1) ... [2024-11-02 12:32:29,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:29" (1/1) ... [2024-11-02 12:32:29,327 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:32:29,329 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:32:29,329 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:32:29,329 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:32:29,331 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:29" (1/1) ... [2024-11-02 12:32:29,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:32:29,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:32:29,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:32:29,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:32:29,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:32:29,402 INFO L130 BoogieDeclarations]: Found specification of procedure returnsStructure [2024-11-02 12:32:29,403 INFO L138 BoogieDeclarations]: Found implementation of procedure returnsStructure [2024-11-02 12:32:29,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:32:29,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:32:29,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-02 12:32:29,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:32:29,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-02 12:32:29,404 INFO L130 BoogieDeclarations]: Found specification of procedure returnsField [2024-11-02 12:32:29,404 INFO L138 BoogieDeclarations]: Found implementation of procedure returnsField [2024-11-02 12:32:29,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:32:29,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:32:29,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:32:29,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:32:29,556 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:32:29,561 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:32:29,980 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-02 12:32:29,980 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:32:30,036 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:32:30,036 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 12:32:30,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:32:30 BoogieIcfgContainer [2024-11-02 12:32:30,037 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:32:30,040 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:32:30,041 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:32:30,044 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:32:30,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:32:28" (1/3) ... [2024-11-02 12:32:30,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78b74e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:32:30, skipping insertion in model container [2024-11-02 12:32:30,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:29" (2/3) ... [2024-11-02 12:32:30,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78b74e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:32:30, skipping insertion in model container [2024-11-02 12:32:30,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:32:30" (3/3) ... [2024-11-02 12:32:30,048 INFO L112 eAbstractionObserver]: Analyzing ICFG float22.i [2024-11-02 12:32:30,070 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:32:30,071 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-02 12:32:30,144 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:32:30,152 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@43edd41, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:32:30,152 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-02 12:32:30,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 26 states have internal predecessors, (30), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-02 12:32:30,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-02 12:32:30,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:32:30,166 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:32:30,167 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:32:30,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:32:30,171 INFO L85 PathProgramCache]: Analyzing trace with hash -248942530, now seen corresponding path program 1 times [2024-11-02 12:32:30,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:32:30,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733479359] [2024-11-02 12:32:30,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:30,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:32:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:32:30,440 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-02 12:32:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:32:30,572 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-02 12:32:30,574 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-02 12:32:30,576 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-02 12:32:30,579 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-02 12:32:30,580 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-02 12:32:30,580 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-02 12:32:30,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:32:30,588 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-02 12:32:30,611 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:32:30,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:32:30 BoogieIcfgContainer [2024-11-02 12:32:30,614 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:32:30,615 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:32:30,615 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:32:30,615 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:32:30,616 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:32:30" (3/4) ... [2024-11-02 12:32:30,617 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-02 12:32:30,668 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 12:32:30,668 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:32:30,670 INFO L158 Benchmark]: Toolchain (without parser) took 1887.79ms. Allocated memory is still 176.2MB. Free memory was 144.3MB in the beginning and 76.5MB in the end (delta: 67.7MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2024-11-02 12:32:30,670 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 109.1MB. Free memory is still 60.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:32:30,671 INFO L158 Benchmark]: CACSL2BoogieTranslator took 452.78ms. Allocated memory is still 176.2MB. Free memory was 144.3MB in the beginning and 130.5MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-02 12:32:30,671 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.58ms. Allocated memory is still 176.2MB. Free memory was 130.5MB in the beginning and 128.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:32:30,672 INFO L158 Benchmark]: Boogie Preprocessor took 50.21ms. Allocated memory is still 176.2MB. Free memory was 128.3MB in the beginning and 126.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:32:30,676 INFO L158 Benchmark]: RCFGBuilder took 708.57ms. Allocated memory is still 176.2MB. Free memory was 126.2MB in the beginning and 103.8MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-02 12:32:30,677 INFO L158 Benchmark]: TraceAbstraction took 573.74ms. Allocated memory is still 176.2MB. Free memory was 102.9MB in the beginning and 78.6MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-02 12:32:30,677 INFO L158 Benchmark]: Witness Printer took 53.88ms. Allocated memory is still 176.2MB. Free memory was 78.6MB in the beginning and 76.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:32:30,684 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 109.1MB. Free memory is still 60.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 452.78ms. Allocated memory is still 176.2MB. Free memory was 144.3MB in the beginning and 130.5MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.58ms. Allocated memory is still 176.2MB. Free memory was 130.5MB in the beginning and 128.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.21ms. Allocated memory is still 176.2MB. Free memory was 128.3MB in the beginning and 126.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 708.57ms. Allocated memory is still 176.2MB. Free memory was 126.2MB in the beginning and 103.8MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 573.74ms. Allocated memory is still 176.2MB. Free memory was 102.9MB in the beginning and 78.6MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 53.88ms. Allocated memory is still 176.2MB. Free memory was 78.6MB in the beginning and 76.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. 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: 144]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L179] CALL testOne() [L139] ieee754_float f1, f2; VAL [f1={5:0}, f2={6:0}] [L141] CALL, EXPR returnsStructure(0) VAL [\old(index)=0] [L128] ieee754_float c; [L130] c.ieee.negative = index & 0x1 [L131] c.ieee.exponent = 0 [L132] c.ieee.mantissa = 0 [L134] return c; [L134] return c; [L141] RET, EXPR returnsStructure(0) VAL [f1={5:0}, f2={6:0}] [L141] f1 = returnsStructure(0) [L142] CALL, EXPR returnsStructure(1) VAL [\old(index)=1] [L128] ieee754_float c; [L130] c.ieee.negative = index & 0x1 [L131] c.ieee.exponent = 0 [L132] c.ieee.mantissa = 0 [L134] return c; [L134] return c; [L142] RET, EXPR returnsStructure(1) VAL [f1={5:0}, f2={6:0}] [L142] f2 = returnsStructure(1) [L144] EXPR f1.ieee.negative [L144] EXPR f2.ieee.negative [L144] COND TRUE !(f1.ieee.negative != f2.ieee.negative) [L144] reach_error() - UnprovableResult [Line: 156]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 161]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 173]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 37 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 2, 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=37occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-02 12:32:30,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9b11b6-2e51-41d2-8edc-d64bee3a4023/bin/utaipan-verify-DbMuA5NWw2/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