./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_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_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/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_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_aso.3.M4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/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_ab7b6784-6048-41b1-b567-0da47b94b414/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 88c381f80ede07771f395015e897371ba8d778e07b9cc24c64e290568f2e97f7 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:49:42,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:49:42,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:49:42,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:49:42,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:49:42,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:49:42,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:49:42,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:49:42,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:49:42,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:49:42,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:49:42,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:49:42,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:49:42,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:49:42,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:49:42,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:49:42,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:49:42,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:49:42,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:49:42,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:49:42,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:49:42,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:49:42,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:49:42,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:49:42,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:49:42,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:49:42,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:49:42,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:49:42,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:49:42,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:49:42,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:49:42,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:49:42,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:49:42,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:49:42,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:49:42,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:49:42,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:49:42,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:49:42,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:49:42,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:49:42,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:49:42,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:49:42,898 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:49:42,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:49:42,902 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:49:42,902 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:49:42,904 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:49:42,911 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:49:42,911 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:49:42,912 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:49:42,912 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:49:42,912 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:49:42,913 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:49:42,914 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:49:42,914 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:49:42,914 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:49:42,914 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:49:42,915 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:49:42,915 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:49:42,915 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:49:42,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:49:42,917 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:49:42,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:49:42,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:49:42,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:49:42,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:49:42,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:49:42,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:49:42,920 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:49:42,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:49:42,921 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:49:42,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:49:42,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:49:42,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:49:42,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:49:42,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:49:42,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:49:42,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:49:42,923 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:49:42,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:49:42,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:49:42,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:49:42,924 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:49:42,925 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_ab7b6784-6048-41b1-b567-0da47b94b414/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 88c381f80ede07771f395015e897371ba8d778e07b9cc24c64e290568f2e97f7 [2021-11-23 16:49:43,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:49:43,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:49:43,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:49:43,295 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:49:43,296 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:49:43,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/seq-mthreaded/rekh_aso.3.M4.c [2021-11-23 16:49:43,389 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/data/124e7d139/434719b8912745b981613c4b4deb809b/FLAG3e97eeb6c [2021-11-23 16:49:44,452 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:49:44,453 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/sv-benchmarks/c/seq-mthreaded/rekh_aso.3.M4.c [2021-11-23 16:49:44,488 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/data/124e7d139/434719b8912745b981613c4b4deb809b/FLAG3e97eeb6c [2021-11-23 16:49:44,888 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/data/124e7d139/434719b8912745b981613c4b4deb809b [2021-11-23 16:49:44,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:49:44,892 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:49:44,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:49:44,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:49:44,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:49:44,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:49:44" (1/1) ... [2021-11-23 16:49:44,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dceb70d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:49:44, skipping insertion in model container [2021-11-23 16:49:44,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:49:44" (1/1) ... [2021-11-23 16:49:44,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:49:45,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:49:45,272 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_ab7b6784-6048-41b1-b567-0da47b94b414/sv-benchmarks/c/seq-mthreaded/rekh_aso.3.M4.c[1806,1819] [2021-11-23 16:49:45,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:49:45,989 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:49:46,010 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_ab7b6784-6048-41b1-b567-0da47b94b414/sv-benchmarks/c/seq-mthreaded/rekh_aso.3.M4.c[1806,1819] [2021-11-23 16:49:46,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:49:46,450 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:49:46,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:49:46 WrapperNode [2021-11-23 16:49:46,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:49:46,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:49:46,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:49:46,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:49:46,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:49:46" (1/1) ... [2021-11-23 16:49:46,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:49:46" (1/1) ... [2021-11-23 16:49:47,145 INFO L137 Inliner]: procedures = 70, calls = 5239, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 9786 [2021-11-23 16:49:47,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:49:47,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:49:47,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:49:47,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:49:47,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:49:46" (1/1) ... [2021-11-23 16:49:47,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:49:46" (1/1) ... [2021-11-23 16:49:47,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:49:46" (1/1) ... [2021-11-23 16:49:47,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:49:46" (1/1) ... [2021-11-23 16:49:47,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:49:46" (1/1) ... [2021-11-23 16:49:47,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:49:46" (1/1) ... [2021-11-23 16:49:47,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:49:46" (1/1) ... [2021-11-23 16:49:47,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:49:47,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:49:47,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:49:47,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:49:47,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:49:46" (1/1) ... [2021-11-23 16:49:47,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:49:47,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:49:47,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:49:47,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:49:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:49:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2021-11-23 16:49:47,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2021-11-23 16:49:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-11-23 16:49:47,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-11-23 16:49:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-11-23 16:49:47,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-11-23 16:49:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 16:49:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-11-23 16:49:47,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-11-23 16:49:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-11-23 16:49:47,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-11-23 16:49:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2021-11-23 16:49:47,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2021-11-23 16:49:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-11-23 16:49:47,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-11-23 16:49:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 16:49:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-11-23 16:49:47,899 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-11-23 16:49:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_version [2021-11-23 16:49:47,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_version [2021-11-23 16:49:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-11-23 16:49:47,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-11-23 16:49:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2021-11-23 16:49:47,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2021-11-23 16:49:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2021-11-23 16:49:47,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2021-11-23 16:49:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-11-23 16:49:47,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-11-23 16:49:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_version [2021-11-23 16:49:47,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_version [2021-11-23 16:49:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-11-23 16:49:47,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-11-23 16:49:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-11-23 16:49:47,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-11-23 16:49:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 16:49:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-11-23 16:49:47,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-11-23 16:49:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 16:49:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-11-23 16:49:47,903 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-11-23 16:49:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-11-23 16:49:47,903 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-11-23 16:49:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2021-11-23 16:49:47,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2021-11-23 16:49:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-11-23 16:49:47,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-11-23 16:49:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 16:49:47,904 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 16:49:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:49:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:49:47,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:49:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-11-23 16:49:47,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-11-23 16:49:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-11-23 16:49:47,906 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-11-23 16:49:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-11-23 16:49:47,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-11-23 16:49:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2021-11-23 16:49:47,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2021-11-23 16:49:48,707 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:49:48,710 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:50:09,661 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:50:10,021 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 16:50:10,028 INFO L158 Benchmark]: Toolchain (without parser) took 25132.97ms. Allocated memory was 92.3MB in the beginning and 719.3MB in the end (delta: 627.0MB). Free memory was 47.3MB in the beginning and 573.3MB in the end (delta: -526.1MB). Peak memory consumption was 391.4MB. Max. memory is 16.1GB. [2021-11-23 16:50:10,028 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 92.3MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:50:10,030 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1557.82ms. Allocated memory was 92.3MB in the beginning and 151.0MB in the end (delta: 58.7MB). Free memory was 47.0MB in the beginning and 71.6MB in the end (delta: -24.5MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2021-11-23 16:50:10,031 INFO L158 Benchmark]: Boogie Procedure Inliner took 692.70ms. Allocated memory is still 151.0MB. Free memory was 71.6MB in the beginning and 73.9MB in the end (delta: -2.3MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. [2021-11-23 16:50:10,032 INFO L158 Benchmark]: Boogie Preprocessor took 581.19ms. Allocated memory was 151.0MB in the beginning and 302.0MB in the end (delta: 151.0MB). Free memory was 73.9MB in the beginning and 191.7MB in the end (delta: -117.8MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. [2021-11-23 16:50:10,034 INFO L158 Benchmark]: RCFGBuilder took 22295.75ms. Allocated memory was 302.0MB in the beginning and 719.3MB in the end (delta: 417.3MB). Free memory was 191.7MB in the beginning and 573.3MB in the end (delta: -381.6MB). Peak memory consumption was 325.6MB. Max. memory is 16.1GB. [2021-11-23 16:50:10,061 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 92.3MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1557.82ms. Allocated memory was 92.3MB in the beginning and 151.0MB in the end (delta: 58.7MB). Free memory was 47.0MB in the beginning and 71.6MB in the end (delta: -24.5MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 692.70ms. Allocated memory is still 151.0MB. Free memory was 71.6MB in the beginning and 73.9MB in the end (delta: -2.3MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 581.19ms. Allocated memory was 151.0MB in the beginning and 302.0MB in the end (delta: 151.0MB). Free memory was 73.9MB in the beginning and 191.7MB in the end (delta: -117.8MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. * RCFGBuilder took 22295.75ms. Allocated memory was 302.0MB in the beginning and 719.3MB in the end (delta: 417.3MB). Free memory was 191.7MB in the beginning and 573.3MB in the end (delta: -381.6MB). Peak memory consumption was 325.6MB. 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 16:50:10,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/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_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/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_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_aso.3.M4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/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_ab7b6784-6048-41b1-b567-0da47b94b414/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 88c381f80ede07771f395015e897371ba8d778e07b9cc24c64e290568f2e97f7 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:50:12,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:50:12,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:50:12,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:50:12,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:50:12,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:50:12,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:50:12,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:50:12,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:50:12,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:50:12,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:50:12,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:50:12,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:50:12,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:50:12,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:50:12,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:50:12,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:50:12,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:50:12,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:50:12,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:50:12,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:50:12,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:50:12,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:50:12,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:50:12,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:50:12,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:50:12,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:50:12,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:50:12,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:50:12,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:50:12,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:50:12,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:50:12,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:50:12,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:50:12,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:50:12,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:50:12,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:50:12,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:50:12,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:50:12,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:50:12,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:50:12,769 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:50:12,816 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:50:12,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:50:12,818 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:50:12,818 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:50:12,819 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:50:12,819 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:50:12,820 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:50:12,820 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:50:12,821 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:50:12,821 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:50:12,822 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:50:12,823 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:50:12,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:50:12,825 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:50:12,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:50:12,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:50:12,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:50:12,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:50:12,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:50:12,826 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:50:12,827 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:50:12,827 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:50:12,827 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:50:12,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:50:12,827 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:50:12,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:50:12,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:50:12,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:50:12,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:50:12,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:50:12,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:50:12,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:50:12,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:50:12,830 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:50:12,830 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:50:12,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:50:12,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:50:12,831 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:50:12,832 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_ab7b6784-6048-41b1-b567-0da47b94b414/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 88c381f80ede07771f395015e897371ba8d778e07b9cc24c64e290568f2e97f7 [2021-11-23 16:50:13,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:50:13,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:50:13,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:50:13,292 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:50:13,293 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:50:13,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/seq-mthreaded/rekh_aso.3.M4.c [2021-11-23 16:50:13,372 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/data/d90f9d846/3b595798eb3c4622bc380f407028533d/FLAGd1165d16f [2021-11-23 16:50:14,250 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:50:14,251 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/sv-benchmarks/c/seq-mthreaded/rekh_aso.3.M4.c [2021-11-23 16:50:14,289 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/data/d90f9d846/3b595798eb3c4622bc380f407028533d/FLAGd1165d16f [2021-11-23 16:50:14,772 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/data/d90f9d846/3b595798eb3c4622bc380f407028533d [2021-11-23 16:50:14,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:50:14,776 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:50:14,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:50:14,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:50:14,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:50:14,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:50:14" (1/1) ... [2021-11-23 16:50:14,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@550eea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:14, skipping insertion in model container [2021-11-23 16:50:14,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:50:14" (1/1) ... [2021-11-23 16:50:14,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:50:14,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:50:15,125 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_ab7b6784-6048-41b1-b567-0da47b94b414/sv-benchmarks/c/seq-mthreaded/rekh_aso.3.M4.c[1806,1819] [2021-11-23 16:50:15,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:50:15,969 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:50:15,986 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_ab7b6784-6048-41b1-b567-0da47b94b414/sv-benchmarks/c/seq-mthreaded/rekh_aso.3.M4.c[1806,1819] [2021-11-23 16:50:16,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:50:16,546 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:50:16,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:16 WrapperNode [2021-11-23 16:50:16,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:50:16,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:50:16,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:50:16,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:50:16,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:16" (1/1) ... [2021-11-23 16:50:16,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:16" (1/1) ... [2021-11-23 16:50:17,169 INFO L137 Inliner]: procedures = 73, calls = 5239, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 9645 [2021-11-23 16:50:17,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:50:17,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:50:17,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:50:17,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:50:17,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:16" (1/1) ... [2021-11-23 16:50:17,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:16" (1/1) ... [2021-11-23 16:50:17,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:16" (1/1) ... [2021-11-23 16:50:17,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:16" (1/1) ... [2021-11-23 16:50:17,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:16" (1/1) ... [2021-11-23 16:50:17,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:16" (1/1) ... [2021-11-23 16:50:17,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:16" (1/1) ... [2021-11-23 16:50:17,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:50:17,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:50:17,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:50:17,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:50:17,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:16" (1/1) ... [2021-11-23 16:50:17,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:50:17,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:50:17,963 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:50:18,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:50:18,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:50:18,067 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2021-11-23 16:50:18,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2021-11-23 16:50:18,067 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-11-23 16:50:18,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-11-23 16:50:18,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 16:50:18,068 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-11-23 16:50:18,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-11-23 16:50:18,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 16:50:18,068 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-11-23 16:50:18,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-11-23 16:50:18,069 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-11-23 16:50:18,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-11-23 16:50:18,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 16:50:18,069 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2021-11-23 16:50:18,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2021-11-23 16:50:18,070 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-11-23 16:50:18,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-11-23 16:50:18,070 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-11-23 16:50:18,070 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-11-23 16:50:18,070 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_version [2021-11-23 16:50:18,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_version [2021-11-23 16:50:18,071 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-11-23 16:50:18,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-11-23 16:50:18,071 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2021-11-23 16:50:18,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2021-11-23 16:50:18,071 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2021-11-23 16:50:18,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2021-11-23 16:50:18,072 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-11-23 16:50:18,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-11-23 16:50:18,072 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_version [2021-11-23 16:50:18,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_version [2021-11-23 16:50:18,073 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-11-23 16:50:18,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-11-23 16:50:18,073 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-11-23 16:50:18,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-11-23 16:50:18,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-23 16:50:18,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 16:50:18,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 16:50:18,074 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-11-23 16:50:18,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-11-23 16:50:18,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:50:18,074 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-11-23 16:50:18,075 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-11-23 16:50:18,075 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-11-23 16:50:18,075 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-11-23 16:50:18,075 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2021-11-23 16:50:18,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2021-11-23 16:50:18,075 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-11-23 16:50:18,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-11-23 16:50:18,076 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 16:50:18,076 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 16:50:18,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:50:18,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:50:18,077 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-11-23 16:50:18,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-11-23 16:50:18,077 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-11-23 16:50:18,077 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-11-23 16:50:18,077 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-11-23 16:50:18,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-11-23 16:50:18,078 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2021-11-23 16:50:18,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2021-11-23 16:50:18,973 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:50:18,975 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:50:45,964 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:50:46,001 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:50:46,002 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 16:50:46,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:50:46 BoogieIcfgContainer [2021-11-23 16:50:46,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:50:46,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:50:46,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:50:46,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:50:46,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:50:14" (1/3) ... [2021-11-23 16:50:46,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f8d295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:50:46, skipping insertion in model container [2021-11-23 16:50:46,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:16" (2/3) ... [2021-11-23 16:50:46,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f8d295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:50:46, skipping insertion in model container [2021-11-23 16:50:46,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:50:46" (3/3) ... [2021-11-23 16:50:46,023 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_aso.3.M4.c [2021-11-23 16:50:46,031 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:50:46,031 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 16:50:46,125 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:50:46,133 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 16:50:46,133 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 16:50:46,240 INFO L276 IsEmpty]: Start isEmpty. Operand has 3589 states, 2050 states have (on average 1.1653658536585365) internal successors, (2389), 2055 states have internal predecessors, (2389), 1511 states have call successors, (1511), 26 states have call predecessors, (1511), 26 states have return successors, (1511), 1509 states have call predecessors, (1511), 1511 states have call successors, (1511) [2021-11-23 16:50:46,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1379 [2021-11-23 16:50:46,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:46,372 INFO L514 BasicCegarLoop]: trace histogram [210, 210, 210, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:46,373 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:50:46,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:46,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1434617797, now seen corresponding path program 1 times [2021-11-23 16:50:46,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:46,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479603005] [2021-11-23 16:50:46,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:46,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:46,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:46,412 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:46,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:50:47,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:47,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:47,212 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 16:50:47,218 INFO L158 Benchmark]: Toolchain (without parser) took 32440.48ms. Allocated memory was 75.5MB in the beginning and 761.3MB in the end (delta: 685.8MB). Free memory was 51.1MB in the beginning and 485.2MB in the end (delta: -434.1MB). Peak memory consumption was 251.0MB. Max. memory is 16.1GB. [2021-11-23 16:50:47,218 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 75.5MB. Free memory is still 55.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:50:47,219 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1788.46ms. Allocated memory was 75.5MB in the beginning and 132.1MB in the end (delta: 56.6MB). Free memory was 50.9MB in the beginning and 86.1MB in the end (delta: -35.2MB). Peak memory consumption was 54.9MB. Max. memory is 16.1GB. [2021-11-23 16:50:47,221 INFO L158 Benchmark]: Boogie Procedure Inliner took 602.53ms. Allocated memory is still 132.1MB. Free memory was 86.1MB in the beginning and 50.7MB in the end (delta: 35.4MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2021-11-23 16:50:47,222 INFO L158 Benchmark]: Boogie Preprocessor took 744.25ms. Allocated memory was 132.1MB in the beginning and 264.2MB in the end (delta: 132.1MB). Free memory was 50.7MB in the beginning and 150.5MB in the end (delta: -99.8MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2021-11-23 16:50:47,222 INFO L158 Benchmark]: RCFGBuilder took 28092.94ms. Allocated memory was 264.2MB in the beginning and 761.3MB in the end (delta: 497.0MB). Free memory was 150.5MB in the beginning and 570.1MB in the end (delta: -419.7MB). Peak memory consumption was 288.4MB. Max. memory is 16.1GB. [2021-11-23 16:50:47,223 INFO L158 Benchmark]: TraceAbstraction took 1202.56ms. Allocated memory is still 761.3MB. Free memory was 570.1MB in the beginning and 485.2MB in the end (delta: 84.9MB). Peak memory consumption was 86.0MB. Max. memory is 16.1GB. [2021-11-23 16:50:47,227 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 75.5MB. Free memory is still 55.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1788.46ms. Allocated memory was 75.5MB in the beginning and 132.1MB in the end (delta: 56.6MB). Free memory was 50.9MB in the beginning and 86.1MB in the end (delta: -35.2MB). Peak memory consumption was 54.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 602.53ms. Allocated memory is still 132.1MB. Free memory was 86.1MB in the beginning and 50.7MB in the end (delta: 35.4MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 744.25ms. Allocated memory was 132.1MB in the beginning and 264.2MB in the end (delta: 132.1MB). Free memory was 50.7MB in the beginning and 150.5MB in the end (delta: -99.8MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. * RCFGBuilder took 28092.94ms. Allocated memory was 264.2MB in the beginning and 761.3MB in the end (delta: 497.0MB). Free memory was 150.5MB in the beginning and 570.1MB in the end (delta: -419.7MB). Peak memory consumption was 288.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1202.56ms. Allocated memory is still 761.3MB. Free memory was 570.1MB in the beginning and 485.2MB in the end (delta: 84.9MB). Peak memory consumption was 86.0MB. 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 16:50:47,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7b6784-6048-41b1-b567-0da47b94b414/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