./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.elevator.4.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_15cd259b-865a-4fa9-96e9-0a3af9283904/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd259b-865a-4fa9-96e9-0a3af9283904/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_15cd259b-865a-4fa9-96e9-0a3af9283904/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd259b-865a-4fa9-96e9-0a3af9283904/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.elevator.4.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd259b-865a-4fa9-96e9-0a3af9283904/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd259b-865a-4fa9-96e9-0a3af9283904/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 64bit --witnessprinter.graph.data.programhash 5a831469c751e448f2212675b250a5c53fd9a8e85d39ceea076c06bc7d533711 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:32:40,097 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:32:40,208 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd259b-865a-4fa9-96e9-0a3af9283904/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-02 12:32:40,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:32:40,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:32:40,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:32:40,278 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:32:40,278 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:32:40,279 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:32:40,279 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:32:40,280 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:32:40,284 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:32:40,285 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:32:40,286 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:32:40,287 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:32:40,287 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:32:40,288 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:32:40,288 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:32:40,288 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:32:40,289 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:32:40,296 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:32:40,298 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:32:40,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:32:40,299 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:32:40,299 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:32:40,300 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:32:40,300 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:32:40,324 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:32:40,325 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:32:40,325 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:32:40,325 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:32:40,326 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:32:40,326 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:32:40,326 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:32:40,326 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:32:40,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:32:40,327 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:32:40,327 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:32:40,327 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:32:40,327 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:32:40,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:32:40,335 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:32:40,335 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:32:40,336 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:32:40,336 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_15cd259b-865a-4fa9-96e9-0a3af9283904/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd259b-865a-4fa9-96e9-0a3af9283904/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a831469c751e448f2212675b250a5c53fd9a8e85d39ceea076c06bc7d533711 [2024-11-02 12:32:40,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:32:40,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:32:40,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:32:40,861 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:32:40,862 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:32:40,863 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd259b-865a-4fa9-96e9-0a3af9283904/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.elevator.4.prop1-back-serstep.c Unable to find full path for "g++" [2024-11-02 12:32:42,987 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:32:43,483 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:32:43,486 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd259b-865a-4fa9-96e9-0a3af9283904/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.elevator.4.prop1-back-serstep.c [2024-11-02 12:32:43,518 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd259b-865a-4fa9-96e9-0a3af9283904/bin/utaipan-verify-DbMuA5NWw2/data/af38248fd/8393b25760dd4d0d9d50f41f45993b23/FLAG6d3601f63 [2024-11-02 12:32:43,536 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd259b-865a-4fa9-96e9-0a3af9283904/bin/utaipan-verify-DbMuA5NWw2/data/af38248fd/8393b25760dd4d0d9d50f41f45993b23 [2024-11-02 12:32:43,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:32:43,543 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:32:43,546 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:32:43,546 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:32:43,553 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:32:43,554 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:32:43" (1/1) ... [2024-11-02 12:32:43,556 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e2ba729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:43, skipping insertion in model container [2024-11-02 12:32:43,557 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:32:43" (1/1) ... [2024-11-02 12:32:43,654 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:32:43,928 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_15cd259b-865a-4fa9-96e9-0a3af9283904/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.elevator.4.prop1-back-serstep.c[1176,1189] [2024-11-02 12:32:44,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:32:44,717 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:32:44,729 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_15cd259b-865a-4fa9-96e9-0a3af9283904/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.elevator.4.prop1-back-serstep.c[1176,1189] [2024-11-02 12:32:45,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:32:45,173 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:32:45,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:45 WrapperNode [2024-11-02 12:32:45,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:32:45,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:32:45,175 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:32:45,176 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:32:45,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:45" (1/1) ... [2024-11-02 12:32:45,312 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:45" (1/1) ... [2024-11-02 12:32:47,017 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 11533 [2024-11-02 12:32:47,019 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:32:47,022 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:32:47,023 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:32:47,023 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:32:47,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:45" (1/1) ... [2024-11-02 12:32:47,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:45" (1/1) ... [2024-11-02 12:32:47,414 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:45" (1/1) ... [2024-11-02 12:32:47,420 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:45" (1/1) ... [2024-11-02 12:32:47,996 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:45" (1/1) ... [2024-11-02 12:32:48,090 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:45" (1/1) ... [2024-11-02 12:32:48,176 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:45" (1/1) ... [2024-11-02 12:32:48,228 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:45" (1/1) ... [2024-11-02 12:32:48,512 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:32:48,514 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:32:48,515 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:32:48,515 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:32:48,516 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:45" (1/1) ... [2024-11-02 12:32:48,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:32:48,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd259b-865a-4fa9-96e9-0a3af9283904/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:32:48,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd259b-865a-4fa9-96e9-0a3af9283904/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:32:48,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd259b-865a-4fa9-96e9-0a3af9283904/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:32:48,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:32:48,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:32:48,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:32:48,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:32:49,451 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:32:49,453 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation