./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl --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 5816b6ee4c54982d6c4f363e51f69070026ee50b2ef95cedbe859f62dcbecd24 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:55:57,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:55:57,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:55:57,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:55:57,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:55:57,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:55:57,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:55:57,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:55:57,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:55:57,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:55:57,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:55:57,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:55:57,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:55:57,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:55:57,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:55:57,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:55:57,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:55:57,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:55:57,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:55:57,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:55:57,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:55:57,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:55:57,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:55:57,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:55:57,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:55:57,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:55:57,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:55:57,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:55:57,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:55:57,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:55:57,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:55:57,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:55:57,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:55:57,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:55:57,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:55:57,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:55:57,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:55:57,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:55:57,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:55:57,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:55:57,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:55:57,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:55:57,767 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:55:57,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:55:57,768 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:55:57,768 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:55:57,769 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:55:57,770 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:55:57,770 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:55:57,770 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:55:57,770 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:55:57,771 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:55:57,772 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:55:57,772 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:55:57,772 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:55:57,772 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:55:57,773 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:55:57,773 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:55:57,773 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:55:57,773 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:55:57,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:55:57,775 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:55:57,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:55:57,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:55:57,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:55:57,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:55:57,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:55:57,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:55:57,778 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:55:57,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:55:57,778 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:55:57,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:55:57,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:55:57,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:55:57,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:55:57,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:55:57,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:55:57,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:55:57,780 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:55:57,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:55:57,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:55:57,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:55:57,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:55:57,782 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5816b6ee4c54982d6c4f363e51f69070026ee50b2ef95cedbe859f62dcbecd24 [2021-11-23 16:55:58,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:55:58,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:55:58,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:55:58,159 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:55:58,160 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:55:58,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M4.c [2021-11-23 16:55:58,254 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/data/c980fb319/3164256fc940401baed7aeb7f00db9c1/FLAGa091f04d0 [2021-11-23 16:55:59,009 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:55:59,010 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M4.c [2021-11-23 16:55:59,041 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/data/c980fb319/3164256fc940401baed7aeb7f00db9c1/FLAGa091f04d0 [2021-11-23 16:55:59,225 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/data/c980fb319/3164256fc940401baed7aeb7f00db9c1 [2021-11-23 16:55:59,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:55:59,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:55:59,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:55:59,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:55:59,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:55:59,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:55:59" (1/1) ... [2021-11-23 16:55:59,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5015479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:55:59, skipping insertion in model container [2021-11-23 16:55:59,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:55:59" (1/1) ... [2021-11-23 16:55:59,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:55:59,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:55:59,602 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M4.c[1762,1775] [2021-11-23 16:56:00,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:56:00,160 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:56:00,174 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M4.c[1762,1775] [2021-11-23 16:56:00,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:56:00,441 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:56:00,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:00 WrapperNode [2021-11-23 16:56:00,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:56:00,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:56:00,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:56:00,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:56:00,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:00" (1/1) ... [2021-11-23 16:56:00,534 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:00" (1/1) ... [2021-11-23 16:56:00,833 INFO L137 Inliner]: procedures = 60, calls = 2543, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 4814 [2021-11-23 16:56:00,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:56:00,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:56:00,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:56:00,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:56:00,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:00" (1/1) ... [2021-11-23 16:56:00,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:00" (1/1) ... [2021-11-23 16:56:00,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:00" (1/1) ... [2021-11-23 16:56:00,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:00" (1/1) ... [2021-11-23 16:56:01,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:00" (1/1) ... [2021-11-23 16:56:01,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:00" (1/1) ... [2021-11-23 16:56:01,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:00" (1/1) ... [2021-11-23 16:56:01,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:56:01,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:56:01,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:56:01,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:56:01,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:00" (1/1) ... [2021-11-23 16:56:01,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:56:01,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:56:01,252 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:56:01,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:56:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:56:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-11-23 16:56:01,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-11-23 16:56:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-11-23 16:56:01,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-11-23 16:56:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 16:56:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-11-23 16:56:01,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-11-23 16:56:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-11-23 16:56:01,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-11-23 16:56:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2021-11-23 16:56:01,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2021-11-23 16:56:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-11-23 16:56:01,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-11-23 16:56:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 16:56:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-11-23 16:56:01,307 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-11-23 16:56:01,308 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-11-23 16:56:01,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-11-23 16:56:01,308 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-11-23 16:56:01,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-11-23 16:56:01,309 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-11-23 16:56:01,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-11-23 16:56:01,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 16:56:01,309 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-11-23 16:56:01,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-11-23 16:56:01,310 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-11-23 16:56:01,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-11-23 16:56:01,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 16:56:01,310 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-11-23 16:56:01,311 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-11-23 16:56:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-11-23 16:56:01,311 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-11-23 16:56:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-11-23 16:56:01,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-11-23 16:56:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 16:56:01,312 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 16:56:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:56:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:56:01,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:56:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-11-23 16:56:01,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-11-23 16:56:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-11-23 16:56:01,314 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-11-23 16:56:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-11-23 16:56:01,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-11-23 16:56:01,914 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:56:01,918 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:56:11,666 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:56:11,883 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 16:56:11,896 INFO L158 Benchmark]: Toolchain (without parser) took 12660.88ms. Allocated memory was 86.0MB in the beginning and 297.8MB in the end (delta: 211.8MB). Free memory was 57.5MB in the beginning and 206.6MB in the end (delta: -149.1MB). Peak memory consumption was 183.7MB. Max. memory is 16.1GB. [2021-11-23 16:56:11,897 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 86.0MB. Free memory was 58.7MB in the beginning and 58.6MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:56:11,899 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1208.13ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 57.3MB in the beginning and 64.2MB in the end (delta: -6.9MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2021-11-23 16:56:11,900 INFO L158 Benchmark]: Boogie Procedure Inliner took 390.95ms. Allocated memory is still 104.9MB. Free memory was 64.2MB in the beginning and 53.4MB in the end (delta: 10.8MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. [2021-11-23 16:56:11,901 INFO L158 Benchmark]: Boogie Preprocessor took 379.71ms. Allocated memory was 104.9MB in the beginning and 180.4MB in the end (delta: 75.5MB). Free memory was 53.4MB in the beginning and 109.9MB in the end (delta: -56.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-23 16:56:11,903 INFO L158 Benchmark]: RCFGBuilder took 10675.94ms. Allocated memory was 180.4MB in the beginning and 297.8MB in the end (delta: 117.4MB). Free memory was 109.0MB in the beginning and 206.6MB in the end (delta: -97.5MB). Peak memory consumption was 141.1MB. Max. memory is 16.1GB. [2021-11-23 16:56:11,915 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 86.0MB. Free memory was 58.7MB in the beginning and 58.6MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1208.13ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 57.3MB in the beginning and 64.2MB in the end (delta: -6.9MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 390.95ms. Allocated memory is still 104.9MB. Free memory was 64.2MB in the beginning and 53.4MB in the end (delta: 10.8MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 379.71ms. Allocated memory was 104.9MB in the beginning and 180.4MB in the end (delta: 75.5MB). Free memory was 53.4MB in the beginning and 109.9MB in the end (delta: -56.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * RCFGBuilder took 10675.94ms. Allocated memory was 180.4MB in the beginning and 297.8MB in the end (delta: 117.4MB). Free memory was 109.0MB in the beginning and 206.6MB in the end (delta: -97.5MB). Peak memory consumption was 141.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 16:56:12,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl --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 5816b6ee4c54982d6c4f363e51f69070026ee50b2ef95cedbe859f62dcbecd24 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:56:14,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:56:14,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:56:14,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:56:14,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:56:14,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:56:14,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:56:14,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:56:14,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:56:14,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:56:14,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:56:14,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:56:14,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:56:14,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:56:14,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:56:14,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:56:14,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:56:14,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:56:14,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:56:14,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:56:14,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:56:14,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:56:14,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:56:14,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:56:14,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:56:14,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:56:14,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:56:14,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:56:14,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:56:14,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:56:14,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:56:14,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:56:14,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:56:14,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:56:14,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:56:14,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:56:14,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:56:14,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:56:14,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:56:14,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:56:14,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:56:14,955 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:56:15,003 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:56:15,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:56:15,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:56:15,005 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:56:15,006 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:56:15,006 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:56:15,006 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:56:15,007 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:56:15,007 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:56:15,007 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:56:15,008 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:56:15,009 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:56:15,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:56:15,011 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:56:15,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:56:15,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:56:15,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:56:15,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:56:15,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:56:15,012 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:56:15,013 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:56:15,013 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:56:15,013 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:56:15,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:56:15,014 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:56:15,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:56:15,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:56:15,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:56:15,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:56:15,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:56:15,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:56:15,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:56:15,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:56:15,017 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:56:15,017 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:56:15,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:56:15,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:56:15,018 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:56:15,018 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_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5816b6ee4c54982d6c4f363e51f69070026ee50b2ef95cedbe859f62dcbecd24 [2021-11-23 16:56:15,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:56:15,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:56:15,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:56:15,444 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:56:15,445 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:56:15,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M4.c [2021-11-23 16:56:15,529 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/data/95ec608cf/7505e2a641af470a9f1af6a445823d65/FLAG21ace285b [2021-11-23 16:56:16,375 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:56:16,376 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M4.c [2021-11-23 16:56:16,422 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/data/95ec608cf/7505e2a641af470a9f1af6a445823d65/FLAG21ace285b [2021-11-23 16:56:16,532 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/data/95ec608cf/7505e2a641af470a9f1af6a445823d65 [2021-11-23 16:56:16,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:56:16,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:56:16,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:56:16,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:56:16,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:56:16,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:56:16" (1/1) ... [2021-11-23 16:56:16,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6debb412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:16, skipping insertion in model container [2021-11-23 16:56:16,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:56:16" (1/1) ... [2021-11-23 16:56:16,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:56:16,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:56:16,860 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M4.c[1762,1775] [2021-11-23 16:56:17,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:56:17,471 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:56:17,493 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M4.c[1762,1775] [2021-11-23 16:56:17,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:56:17,900 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:56:17,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:17 WrapperNode [2021-11-23 16:56:17,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:56:17,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:56:17,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:56:17,903 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:56:17,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:17" (1/1) ... [2021-11-23 16:56:18,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:17" (1/1) ... [2021-11-23 16:56:18,279 INFO L137 Inliner]: procedures = 63, calls = 2543, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 4811 [2021-11-23 16:56:18,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:56:18,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:56:18,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:56:18,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:56:18,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:17" (1/1) ... [2021-11-23 16:56:18,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:17" (1/1) ... [2021-11-23 16:56:18,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:17" (1/1) ... [2021-11-23 16:56:18,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:17" (1/1) ... [2021-11-23 16:56:18,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:17" (1/1) ... [2021-11-23 16:56:18,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:17" (1/1) ... [2021-11-23 16:56:18,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:17" (1/1) ... [2021-11-23 16:56:18,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:56:18,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:56:18,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:56:18,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:56:18,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:17" (1/1) ... [2021-11-23 16:56:18,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:56:18,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:56:18,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:56:18,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:56:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:56:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-11-23 16:56:18,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-11-23 16:56:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 16:56:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-11-23 16:56:18,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-11-23 16:56:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 16:56:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-11-23 16:56:18,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-11-23 16:56:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-11-23 16:56:18,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-11-23 16:56:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2021-11-23 16:56:18,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2021-11-23 16:56:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 16:56:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-11-23 16:56:18,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-11-23 16:56:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-11-23 16:56:18,807 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-11-23 16:56:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-11-23 16:56:18,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-11-23 16:56:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-11-23 16:56:18,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-11-23 16:56:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-11-23 16:56:18,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-11-23 16:56:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-23 16:56:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 16:56:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 16:56:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-11-23 16:56:18,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-11-23 16:56:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-11-23 16:56:18,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-11-23 16:56:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:56:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-11-23 16:56:18,810 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-11-23 16:56:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-11-23 16:56:18,811 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-11-23 16:56:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-11-23 16:56:18,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-11-23 16:56:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 16:56:18,811 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 16:56:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:56:18,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:56:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-11-23 16:56:18,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-11-23 16:56:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-11-23 16:56:18,812 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-11-23 16:56:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-11-23 16:56:18,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-11-23 16:56:19,460 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:56:19,462 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:56:33,940 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:56:33,961 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:56:33,961 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 16:56:33,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:56:33 BoogieIcfgContainer [2021-11-23 16:56:33,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:56:33,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:56:33,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:56:33,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:56:33,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:56:16" (1/3) ... [2021-11-23 16:56:33,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bcbcfc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:56:33, skipping insertion in model container [2021-11-23 16:56:33,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:56:17" (2/3) ... [2021-11-23 16:56:33,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bcbcfc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:56:33, skipping insertion in model container [2021-11-23 16:56:33,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:56:33" (3/3) ... [2021-11-23 16:56:33,975 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.3.M4.c [2021-11-23 16:56:33,981 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:56:33,981 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 16:56:34,044 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:56:34,052 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 16:56:34,052 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 16:56:34,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 1944 states, 1149 states have (on average 1.2027850304612706) internal successors, (1382), 1153 states have internal predecessors, (1382), 774 states have call successors, (774), 19 states have call predecessors, (774), 19 states have return successors, (774), 772 states have call predecessors, (774), 774 states have call successors, (774) [2021-11-23 16:56:34,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1311 [2021-11-23 16:56:34,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:56:34,217 INFO L514 BasicCegarLoop]: trace histogram [209, 209, 209, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:56:34,218 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:56:34,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:56:34,225 INFO L85 PathProgramCache]: Analyzing trace with hash 502494177, now seen corresponding path program 1 times [2021-11-23 16:56:34,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:56:34,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560803753] [2021-11-23 16:56:34,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:56:34,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:56:34,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:56:34,254 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:56:34,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:56:34,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 16:56:34,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:56:34,790 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 16:56:34,800 INFO L158 Benchmark]: Toolchain (without parser) took 18256.90ms. Allocated memory was 50.3MB in the beginning and 293.6MB in the end (delta: 243.3MB). Free memory was 33.9MB in the beginning and 146.5MB in the end (delta: -112.6MB). Peak memory consumption was 129.4MB. Max. memory is 16.1GB. [2021-11-23 16:56:34,801 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 50.3MB. Free memory was 31.2MB in the beginning and 31.2MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:56:34,802 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1361.58ms. Allocated memory was 50.3MB in the beginning and 73.4MB in the end (delta: 23.1MB). Free memory was 33.7MB in the beginning and 31.6MB in the end (delta: 2.1MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2021-11-23 16:56:34,804 INFO L158 Benchmark]: Boogie Procedure Inliner took 377.59ms. Allocated memory is still 73.4MB. Free memory was 31.6MB in the beginning and 27.6MB in the end (delta: 4.0MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2021-11-23 16:56:34,805 INFO L158 Benchmark]: Boogie Preprocessor took 413.66ms. Allocated memory was 73.4MB in the beginning and 146.8MB in the end (delta: 73.4MB). Free memory was 27.6MB in the beginning and 85.6MB in the end (delta: -58.0MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2021-11-23 16:56:34,807 INFO L158 Benchmark]: RCFGBuilder took 15270.95ms. Allocated memory was 146.8MB in the beginning and 293.6MB in the end (delta: 146.8MB). Free memory was 85.6MB in the beginning and 203.9MB in the end (delta: -118.3MB). Peak memory consumption was 121.2MB. Max. memory is 16.1GB. [2021-11-23 16:56:34,808 INFO L158 Benchmark]: TraceAbstraction took 824.35ms. Allocated memory is still 293.6MB. Free memory was 202.9MB in the beginning and 146.5MB in the end (delta: 56.3MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2021-11-23 16:56:34,814 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 50.3MB. Free memory was 31.2MB in the beginning and 31.2MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1361.58ms. Allocated memory was 50.3MB in the beginning and 73.4MB in the end (delta: 23.1MB). Free memory was 33.7MB in the beginning and 31.6MB in the end (delta: 2.1MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 377.59ms. Allocated memory is still 73.4MB. Free memory was 31.6MB in the beginning and 27.6MB in the end (delta: 4.0MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 413.66ms. Allocated memory was 73.4MB in the beginning and 146.8MB in the end (delta: 73.4MB). Free memory was 27.6MB in the beginning and 85.6MB in the end (delta: -58.0MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * RCFGBuilder took 15270.95ms. Allocated memory was 146.8MB in the beginning and 293.6MB in the end (delta: 146.8MB). Free memory was 85.6MB in the beginning and 203.9MB in the end (delta: -118.3MB). Peak memory consumption was 121.2MB. Max. memory is 16.1GB. * TraceAbstraction took 824.35ms. Allocated memory is still 293.6MB. Free memory was 202.9MB in the beginning and 146.5MB in the end (delta: 56.3MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 16:56:34,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6a54f4-0a18-4ac3-b136-ab166d968957/bin/utaipan-fb15Y9Yzbl/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 Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable