./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_aso.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_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/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_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_aso.3.M4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/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_cf53121f-4d11-44d6-9624-e084ad843f23/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 c9b1c02d6c7be7efa5919110e2a46197af13f7e2bcd070264e9ea26a732e0c62 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:02:57,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:02:57,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:02:57,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:02:57,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:02:57,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:02:57,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:02:57,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:02:57,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:02:57,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:02:57,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:02:57,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:02:57,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:02:57,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:02:57,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:02:57,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:02:57,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:02:57,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:02:57,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:02:57,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:02:57,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:02:57,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:02:57,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:02:57,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:02:57,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:02:57,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:02:57,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:02:57,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:02:57,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:02:57,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:02:57,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:02:57,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:02:57,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:02:57,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:02:57,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:02:57,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:02:57,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:02:57,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:02:57,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:02:57,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:02:57,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:02:57,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:02:57,313 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:02:57,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:02:57,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:02:57,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:02:57,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:02:57,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:02:57,317 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:02:57,317 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:02:57,317 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:02:57,318 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:02:57,318 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:02:57,319 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:02:57,319 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:02:57,319 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:02:57,320 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:02:57,320 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:02:57,321 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:02:57,321 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:02:57,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:02:57,323 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:02:57,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:02:57,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:02:57,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:02:57,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:02:57,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:02:57,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:02:57,325 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:02:57,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:02:57,326 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:02:57,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:02:57,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:02:57,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:02:57,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:02:57,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:02:57,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:02:57,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:02:57,329 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:02:57,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:02:57,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:02:57,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:02:57,330 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:02:57,331 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_cf53121f-4d11-44d6-9624-e084ad843f23/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9b1c02d6c7be7efa5919110e2a46197af13f7e2bcd070264e9ea26a732e0c62 [2021-11-23 17:02:57,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:02:57,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:02:57,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:02:57,650 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:02:57,651 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:02:57,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/seq-mthreaded/rekcba_aso.3.M4.c [2021-11-23 17:02:57,735 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/data/d3bc4f9df/d8caf9e10119416faeb5ff7aa44b68b6/FLAGd93171620 [2021-11-23 17:02:58,818 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:02:58,819 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/sv-benchmarks/c/seq-mthreaded/rekcba_aso.3.M4.c [2021-11-23 17:02:58,897 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/data/d3bc4f9df/d8caf9e10119416faeb5ff7aa44b68b6/FLAGd93171620 [2021-11-23 17:02:59,172 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/data/d3bc4f9df/d8caf9e10119416faeb5ff7aa44b68b6 [2021-11-23 17:02:59,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:02:59,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:02:59,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:02:59,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:02:59,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:02:59,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:02:59" (1/1) ... [2021-11-23 17:02:59,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a66be93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:59, skipping insertion in model container [2021-11-23 17:02:59,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:02:59" (1/1) ... [2021-11-23 17:02:59,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:02:59,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:02:59,730 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_cf53121f-4d11-44d6-9624-e084ad843f23/sv-benchmarks/c/seq-mthreaded/rekcba_aso.3.M4.c[2319,2332] [2021-11-23 17:03:01,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:03:01,218 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:03:01,246 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_cf53121f-4d11-44d6-9624-e084ad843f23/sv-benchmarks/c/seq-mthreaded/rekcba_aso.3.M4.c[2319,2332] [2021-11-23 17:03:02,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:03:02,542 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:03:02,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:02 WrapperNode [2021-11-23 17:03:02,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:03:02,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:03:02,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:03:02,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:03:02,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:02" (1/1) ... [2021-11-23 17:03:03,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:02" (1/1) ... [2021-11-23 17:03:05,046 INFO L137 Inliner]: procedures = 72, calls = 21284, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 45639 [2021-11-23 17:03:05,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:03:05,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:03:05,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:03:05,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:03:05,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:02" (1/1) ... [2021-11-23 17:03:05,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:02" (1/1) ... [2021-11-23 17:03:05,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:02" (1/1) ... [2021-11-23 17:03:05,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:02" (1/1) ... [2021-11-23 17:03:06,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:02" (1/1) ... [2021-11-23 17:03:06,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:02" (1/1) ... [2021-11-23 17:03:06,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:02" (1/1) ... [2021-11-23 17:03:06,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:03:06,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:03:06,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:03:06,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:03:06,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:02" (1/1) ... [2021-11-23 17:03:06,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:03:06,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:03:07,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:03:07,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:03:07,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:03:07,054 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2021-11-23 17:03:07,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2021-11-23 17:03:07,055 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-11-23 17:03:07,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-11-23 17:03:07,055 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-11-23 17:03:07,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-11-23 17:03:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:03:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-11-23 17:03:07,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-11-23 17:03:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-11-23 17:03:07,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-11-23 17:03:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2021-11-23 17:03:07,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2021-11-23 17:03:07,211 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-11-23 17:03:07,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-11-23 17:03:07,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 17:03:07,211 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-11-23 17:03:07,211 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-11-23 17:03:07,211 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_version [2021-11-23 17:03:07,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_version [2021-11-23 17:03:07,211 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-11-23 17:03:07,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-11-23 17:03:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2021-11-23 17:03:07,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2021-11-23 17:03:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2021-11-23 17:03:07,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2021-11-23 17:03:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-11-23 17:03:07,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-11-23 17:03:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_version [2021-11-23 17:03:07,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_version [2021-11-23 17:03:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-11-23 17:03:07,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-11-23 17:03:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-11-23 17:03:07,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-11-23 17:03:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:03:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 17:03:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-11-23 17:03:07,213 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-11-23 17:03:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-11-23 17:03:07,213 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-11-23 17:03:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2021-11-23 17:03:07,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2021-11-23 17:03:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-11-23 17:03:07,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-11-23 17:03:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 17:03:07,214 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 17:03:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:03:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:03:07,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:03:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-11-23 17:03:07,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-11-23 17:03:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-11-23 17:03:07,215 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-11-23 17:03:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-11-23 17:03:07,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-11-23 17:03:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2021-11-23 17:03:07,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2021-11-23 17:03:09,646 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:03:09,648 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:06:28,327 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:06:31,265 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 17:06:31,273 INFO L158 Benchmark]: Toolchain (without parser) took 212092.63ms. Allocated memory was 92.3MB in the beginning and 4.9GB in the end (delta: 4.8GB). Free memory was 49.0MB in the beginning and 3.6GB in the end (delta: -3.5GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2021-11-23 17:06:31,274 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 92.3MB. Free memory was 67.3MB in the beginning and 67.3MB in the end (delta: 24.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:06:31,276 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3365.40ms. Allocated memory was 92.3MB in the beginning and 260.0MB in the end (delta: 167.8MB). Free memory was 48.8MB in the beginning and 83.2MB in the end (delta: -34.3MB). Peak memory consumption was 144.0MB. Max. memory is 16.1GB. [2021-11-23 17:06:31,278 INFO L158 Benchmark]: Boogie Procedure Inliner took 2502.71ms. Allocated memory was 260.0MB in the beginning and 731.9MB in the end (delta: 471.9MB). Free memory was 83.2MB in the beginning and 452.3MB in the end (delta: -369.1MB). Peak memory consumption was 183.5MB. Max. memory is 16.1GB. [2021-11-23 17:06:31,279 INFO L158 Benchmark]: Boogie Preprocessor took 1911.39ms. Allocated memory was 731.9MB in the beginning and 2.2GB in the end (delta: 1.5GB). Free memory was 452.3MB in the beginning and 1.8GB in the end (delta: -1.3GB). Peak memory consumption was 125.8MB. Max. memory is 16.1GB. [2021-11-23 17:06:31,281 INFO L158 Benchmark]: RCFGBuilder took 204307.53ms. Allocated memory was 2.2GB in the beginning and 4.9GB in the end (delta: 2.7GB). Free memory was 1.8GB in the beginning and 3.6GB in the end (delta: -1.8GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2021-11-23 17:06:31,292 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 92.3MB. Free memory was 67.3MB in the beginning and 67.3MB in the end (delta: 24.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3365.40ms. Allocated memory was 92.3MB in the beginning and 260.0MB in the end (delta: 167.8MB). Free memory was 48.8MB in the beginning and 83.2MB in the end (delta: -34.3MB). Peak memory consumption was 144.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 2502.71ms. Allocated memory was 260.0MB in the beginning and 731.9MB in the end (delta: 471.9MB). Free memory was 83.2MB in the beginning and 452.3MB in the end (delta: -369.1MB). Peak memory consumption was 183.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 1911.39ms. Allocated memory was 731.9MB in the beginning and 2.2GB in the end (delta: 1.5GB). Free memory was 452.3MB in the beginning and 1.8GB in the end (delta: -1.3GB). Peak memory consumption was 125.8MB. Max. memory is 16.1GB. * RCFGBuilder took 204307.53ms. Allocated memory was 2.2GB in the beginning and 4.9GB in the end (delta: 2.7GB). Free memory was 1.8GB in the beginning and 3.6GB in the end (delta: -1.8GB). Peak memory consumption was 2.0GB. 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 17:06:31,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/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 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_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/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_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_aso.3.M4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/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_cf53121f-4d11-44d6-9624-e084ad843f23/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 c9b1c02d6c7be7efa5919110e2a46197af13f7e2bcd070264e9ea26a732e0c62 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:06:34,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:06:34,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:06:34,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:06:34,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:06:34,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:06:34,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:06:34,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:06:34,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:06:34,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:06:34,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:06:34,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:06:34,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:06:34,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:06:34,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:06:34,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:06:34,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:06:34,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:06:34,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:06:34,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:06:34,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:06:34,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:06:34,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:06:34,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:06:34,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:06:34,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:06:34,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:06:34,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:06:34,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:06:34,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:06:34,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:06:34,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:06:34,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:06:34,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:06:34,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:06:34,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:06:34,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:06:34,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:06:34,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:06:34,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:06:34,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:06:34,332 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:06:34,377 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:06:34,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:06:34,378 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:06:34,379 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:06:34,380 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:06:34,380 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:06:34,380 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:06:34,381 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:06:34,381 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:06:34,381 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:06:34,382 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:06:34,383 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:06:34,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:06:34,385 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:06:34,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:06:34,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:06:34,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:06:34,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:06:34,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:06:34,387 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:06:34,387 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:06:34,387 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:06:34,388 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:06:34,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:06:34,388 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:06:34,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:06:34,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:06:34,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:06:34,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:06:34,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:06:34,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:06:34,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:06:34,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:06:34,391 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:06:34,392 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:06:34,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:06:34,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:06:34,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:06:34,393 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_cf53121f-4d11-44d6-9624-e084ad843f23/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9b1c02d6c7be7efa5919110e2a46197af13f7e2bcd070264e9ea26a732e0c62 [2021-11-23 17:06:34,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:06:34,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:06:34,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:06:34,845 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:06:34,846 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:06:34,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/seq-mthreaded/rekcba_aso.3.M4.c [2021-11-23 17:06:34,952 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/data/104e4921f/e8dbcd33d8f74487a9ee70d16bd4d49b/FLAG7497630a2 [2021-11-23 17:06:36,171 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:06:36,172 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/sv-benchmarks/c/seq-mthreaded/rekcba_aso.3.M4.c [2021-11-23 17:06:36,237 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/data/104e4921f/e8dbcd33d8f74487a9ee70d16bd4d49b/FLAG7497630a2 [2021-11-23 17:06:36,495 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/data/104e4921f/e8dbcd33d8f74487a9ee70d16bd4d49b [2021-11-23 17:06:36,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:06:36,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:06:36,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:06:36,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:06:36,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:06:36,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:06:36" (1/1) ... [2021-11-23 17:06:36,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7772705d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:36, skipping insertion in model container [2021-11-23 17:06:36,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:06:36" (1/1) ... [2021-11-23 17:06:36,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:06:36,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:06:37,317 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_cf53121f-4d11-44d6-9624-e084ad843f23/sv-benchmarks/c/seq-mthreaded/rekcba_aso.3.M4.c[2319,2332] [2021-11-23 17:06:39,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:06:39,393 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:06:39,425 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_cf53121f-4d11-44d6-9624-e084ad843f23/sv-benchmarks/c/seq-mthreaded/rekcba_aso.3.M4.c[2319,2332] [2021-11-23 17:06:41,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:06:41,309 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:06:41,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:41 WrapperNode [2021-11-23 17:06:41,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:06:41,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:06:41,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:06:41,312 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:06:41,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:41" (1/1) ... [2021-11-23 17:06:42,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:41" (1/1) ... [2021-11-23 17:06:43,721 INFO L137 Inliner]: procedures = 75, calls = 21284, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 45093 [2021-11-23 17:06:43,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:06:43,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:06:43,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:06:43,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:06:43,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:41" (1/1) ... [2021-11-23 17:06:43,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:41" (1/1) ... [2021-11-23 17:06:44,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:41" (1/1) ... [2021-11-23 17:06:44,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:41" (1/1) ... [2021-11-23 17:06:45,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:41" (1/1) ... [2021-11-23 17:06:45,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:41" (1/1) ... [2021-11-23 17:06:45,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:41" (1/1) ... [2021-11-23 17:06:45,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:06:45,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:06:45,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:06:45,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:06:45,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:41" (1/1) ... [2021-11-23 17:06:45,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:06:45,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:06:45,975 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:06:45,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:06:46,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:06:46,033 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2021-11-23 17:06:46,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2021-11-23 17:06:46,033 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-11-23 17:06:46,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-11-23 17:06:46,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 17:06:46,034 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-11-23 17:06:46,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-11-23 17:06:46,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:06:46,034 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-11-23 17:06:46,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-11-23 17:06:46,034 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-11-23 17:06:46,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-11-23 17:06:46,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 17:06:46,035 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2021-11-23 17:06:46,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2021-11-23 17:06:46,035 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-11-23 17:06:46,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-11-23 17:06:46,036 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-11-23 17:06:46,036 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-11-23 17:06:46,036 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_version [2021-11-23 17:06:46,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_version [2021-11-23 17:06:46,037 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-11-23 17:06:46,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-11-23 17:06:46,037 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2021-11-23 17:06:46,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2021-11-23 17:06:46,037 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2021-11-23 17:06:46,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2021-11-23 17:06:46,038 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-11-23 17:06:46,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-11-23 17:06:46,038 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_version [2021-11-23 17:06:46,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_version [2021-11-23 17:06:46,039 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-11-23 17:06:46,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-11-23 17:06:46,039 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-11-23 17:06:46,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-11-23 17:06:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-23 17:06:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:06:46,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 17:06:46,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:06:46,041 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-11-23 17:06:46,041 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-11-23 17:06:46,042 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-11-23 17:06:46,042 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-11-23 17:06:46,042 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2021-11-23 17:06:46,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2021-11-23 17:06:46,042 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-11-23 17:06:46,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-11-23 17:06:46,043 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 17:06:46,043 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 17:06:46,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:06:46,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:06:46,045 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-11-23 17:06:46,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-11-23 17:06:46,045 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-11-23 17:06:46,046 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-11-23 17:06:46,046 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-11-23 17:06:46,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-11-23 17:06:46,046 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2021-11-23 17:06:46,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2021-11-23 17:06:48,539 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:06:48,541 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:10:51,241 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:10:51,321 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:10:51,321 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 17:10:51,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:10:51 BoogieIcfgContainer [2021-11-23 17:10:51,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:10:51,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:10:51,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:10:51,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:10:51,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:06:36" (1/3) ... [2021-11-23 17:10:51,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520dc1c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:10:51, skipping insertion in model container [2021-11-23 17:10:51,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:41" (2/3) ... [2021-11-23 17:10:51,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520dc1c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:10:51, skipping insertion in model container [2021-11-23 17:10:51,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:10:51" (3/3) ... [2021-11-23 17:10:51,349 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_aso.3.M4.c [2021-11-23 17:10:51,356 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:10:51,356 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:10:51,472 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:10:51,478 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 17:10:51,479 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:10:51,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 13155 states, 8487 states have (on average 1.302698244373748) internal successors, (11056), 8600 states have internal predecessors, (11056), 4641 states have call successors, (4641), 25 states have call predecessors, (4641), 25 states have return successors, (4641), 4639 states have call predecessors, (4641), 4641 states have call successors, (4641) [2021-11-23 17:10:52,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8469 [2021-11-23 17:10:52,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:10:52,599 INFO L514 BasicCegarLoop]: trace histogram [979, 979, 979, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:10:52,600 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:10:52,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:10:52,611 INFO L85 PathProgramCache]: Analyzing trace with hash -2039053156, now seen corresponding path program 1 times [2021-11-23 17:10:52,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:10:52,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033758614] [2021-11-23 17:10:52,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:10:52,672 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:10:52,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:10:52,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:10:52,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:10:54,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:10:54,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:10:54,642 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 17:10:54,648 INFO L158 Benchmark]: Toolchain (without parser) took 258143.03ms. Allocated memory was 94.4MB in the beginning and 6.5GB in the end (delta: 6.4GB). Free memory was 66.5MB in the beginning and 5.9GB in the end (delta: -5.8GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2021-11-23 17:10:54,650 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 60.8MB. Free memory was 41.6MB in the beginning and 41.5MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:10:54,651 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4805.00ms. Allocated memory was 94.4MB in the beginning and 469.8MB in the end (delta: 375.4MB). Free memory was 66.2MB in the beginning and 226.8MB in the end (delta: -160.6MB). Peak memory consumption was 216.8MB. Max. memory is 16.1GB. [2021-11-23 17:10:54,654 INFO L158 Benchmark]: Boogie Procedure Inliner took 2410.27ms. Allocated memory was 469.8MB in the beginning and 1.2GB in the end (delta: 698.4MB). Free memory was 225.8MB in the beginning and 897.0MB in the end (delta: -671.3MB). Peak memory consumption was 169.9MB. Max. memory is 16.1GB. [2021-11-23 17:10:54,655 INFO L158 Benchmark]: Boogie Preprocessor took 2165.05ms. Allocated memory was 1.2GB in the beginning and 3.0GB in the end (delta: 1.8GB). Free memory was 897.0MB in the beginning and 2.6GB in the end (delta: -1.7GB). Peak memory consumption was 211.8MB. Max. memory is 16.1GB. [2021-11-23 17:10:54,658 INFO L158 Benchmark]: RCFGBuilder took 245447.97ms. Allocated memory was 3.0GB in the beginning and 6.5GB in the end (delta: 3.5GB). Free memory was 2.6GB in the beginning and 5.9GB in the end (delta: -3.3GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2021-11-23 17:10:54,659 INFO L158 Benchmark]: TraceAbstraction took 3304.01ms. Allocated memory is still 6.5GB. Free memory was 5.9GB in the beginning and 5.9GB in the end (delta: 62.3MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2021-11-23 17:10:54,666 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 60.8MB. Free memory was 41.6MB in the beginning and 41.5MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4805.00ms. Allocated memory was 94.4MB in the beginning and 469.8MB in the end (delta: 375.4MB). Free memory was 66.2MB in the beginning and 226.8MB in the end (delta: -160.6MB). Peak memory consumption was 216.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 2410.27ms. Allocated memory was 469.8MB in the beginning and 1.2GB in the end (delta: 698.4MB). Free memory was 225.8MB in the beginning and 897.0MB in the end (delta: -671.3MB). Peak memory consumption was 169.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 2165.05ms. Allocated memory was 1.2GB in the beginning and 3.0GB in the end (delta: 1.8GB). Free memory was 897.0MB in the beginning and 2.6GB in the end (delta: -1.7GB). Peak memory consumption was 211.8MB. Max. memory is 16.1GB. * RCFGBuilder took 245447.97ms. Allocated memory was 3.0GB in the beginning and 6.5GB in the end (delta: 3.5GB). Free memory was 2.6GB in the beginning and 5.9GB in the end (delta: -3.3GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. * TraceAbstraction took 3304.01ms. Allocated memory is still 6.5GB. Free memory was 5.9GB in the beginning and 5.9GB in the end (delta: 62.3MB). Peak memory consumption was 1.0GB. 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 17:10:54,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf53121f-4d11-44d6-9624-e084ad843f23/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 Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable