./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-2.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_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/config/KojakReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b3322c0c768700658989b53a570d5dd58dc6c9ba5f33ff303fa538b570ca8619 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 15:04:47,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 15:04:47,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 15:04:47,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 15:04:47,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 15:04:47,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 15:04:47,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 15:04:47,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 15:04:47,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 15:04:47,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 15:04:47,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 15:04:47,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 15:04:47,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 15:04:47,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 15:04:47,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 15:04:47,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 15:04:47,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 15:04:47,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 15:04:47,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 15:04:47,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 15:04:47,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 15:04:47,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 15:04:47,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 15:04:47,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 15:04:47,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 15:04:47,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 15:04:47,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 15:04:47,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 15:04:47,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 15:04:47,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 15:04:47,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 15:04:47,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 15:04:47,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 15:04:47,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 15:04:47,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 15:04:47,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 15:04:47,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 15:04:47,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 15:04:47,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 15:04:47,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 15:04:47,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 15:04:47,797 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-11-23 15:04:47,842 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 15:04:47,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 15:04:47,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 15:04:47,844 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-23 15:04:47,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 15:04:47,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 15:04:47,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 15:04:47,846 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 15:04:47,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 15:04:47,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 15:04:47,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 15:04:47,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 15:04:47,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 15:04:47,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 15:04:47,855 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 15:04:47,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 15:04:47,855 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 15:04:47,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 15:04:47,856 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 15:04:47,856 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 15:04:47,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 15:04:47,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 15:04:47,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 15:04:47,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 15:04:47,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 15:04:47,857 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 15:04:47,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 15:04:47,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 15:04:47,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3322c0c768700658989b53a570d5dd58dc6c9ba5f33ff303fa538b570ca8619 [2021-11-23 15:04:48,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 15:04:48,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 15:04:48,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 15:04:48,157 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 15:04:48,157 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 15:04:48,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-2.c [2021-11-23 15:04:48,252 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/data/b1904205e/c79765c1ced84a26ae375fb60018f430/FLAGa53f80342 [2021-11-23 15:04:48,896 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 15:04:48,896 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-2.c [2021-11-23 15:04:48,912 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/data/b1904205e/c79765c1ced84a26ae375fb60018f430/FLAGa53f80342 [2021-11-23 15:04:49,139 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/data/b1904205e/c79765c1ced84a26ae375fb60018f430 [2021-11-23 15:04:49,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 15:04:49,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 15:04:49,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 15:04:49,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 15:04:49,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 15:04:49,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:04:49" (1/1) ... [2021-11-23 15:04:49,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c437bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:49, skipping insertion in model container [2021-11-23 15:04:49,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:04:49" (1/1) ... [2021-11-23 15:04:49,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 15:04:49,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 15:04:49,419 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_cbb0defa-0f78-4ee0-858f-4c4a44094165/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-2.c[914,927] [2021-11-23 15:04:49,474 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_cbb0defa-0f78-4ee0-858f-4c4a44094165/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-2.c[7115,7128] [2021-11-23 15:04:49,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 15:04:49,623 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 15:04:49,638 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_cbb0defa-0f78-4ee0-858f-4c4a44094165/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-2.c[914,927] [2021-11-23 15:04:49,673 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_cbb0defa-0f78-4ee0-858f-4c4a44094165/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-2.c[7115,7128] [2021-11-23 15:04:49,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 15:04:49,766 INFO L208 MainTranslator]: Completed translation [2021-11-23 15:04:49,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:49 WrapperNode [2021-11-23 15:04:49,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 15:04:49,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 15:04:49,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 15:04:49,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 15:04:49,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:49" (1/1) ... [2021-11-23 15:04:49,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:49" (1/1) ... [2021-11-23 15:04:49,855 INFO L137 Inliner]: procedures = 75, calls = 90, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 982 [2021-11-23 15:04:49,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 15:04:49,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 15:04:49,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 15:04:49,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 15:04:49,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:49" (1/1) ... [2021-11-23 15:04:49,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:49" (1/1) ... [2021-11-23 15:04:49,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:49" (1/1) ... [2021-11-23 15:04:49,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:49" (1/1) ... [2021-11-23 15:04:49,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:49" (1/1) ... [2021-11-23 15:04:49,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:49" (1/1) ... [2021-11-23 15:04:49,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:49" (1/1) ... [2021-11-23 15:04:49,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 15:04:49,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 15:04:49,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 15:04:49,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 15:04:49,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:49" (1/1) ... [2021-11-23 15:04:49,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 15:04:49,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/z3 [2021-11-23 15:04:49,999 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 15:04:50,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 15:04:50,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 15:04:50,037 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 15:04:50,037 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 15:04:50,037 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-11-23 15:04:50,037 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-11-23 15:04:50,037 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 15:04:50,038 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 15:04:50,038 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 15:04:50,038 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 15:04:50,038 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-11-23 15:04:50,038 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-11-23 15:04:50,038 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 15:04:50,039 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 15:04:50,039 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 15:04:50,039 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 15:04:50,039 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-11-23 15:04:50,039 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-11-23 15:04:50,039 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-11-23 15:04:50,039 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-11-23 15:04:50,040 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-11-23 15:04:50,040 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-11-23 15:04:50,040 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 15:04:50,040 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 15:04:50,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 15:04:50,040 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 15:04:50,041 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 15:04:50,041 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-11-23 15:04:50,041 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-11-23 15:04:50,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 15:04:50,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 15:04:50,041 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 15:04:50,041 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 15:04:50,170 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 15:04:50,173 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 15:04:51,123 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 15:04:51,194 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 15:04:51,204 INFO L158 Benchmark]: Toolchain (without parser) took 2058.63ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 55.8MB in the beginning and 58.4MB in the end (delta: -2.6MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2021-11-23 15:04:51,205 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 96.5MB. Free memory was 73.1MB in the beginning and 73.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 15:04:51,207 INFO L158 Benchmark]: CACSL2BoogieTranslator took 619.41ms. Allocated memory is still 96.5MB. Free memory was 55.6MB in the beginning and 58.1MB in the end (delta: -2.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 15:04:51,208 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.98ms. Allocated memory is still 96.5MB. Free memory was 58.1MB in the beginning and 53.5MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 15:04:51,209 INFO L158 Benchmark]: Boogie Preprocessor took 98.74ms. Allocated memory is still 96.5MB. Free memory was 53.5MB in the beginning and 49.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 15:04:51,210 INFO L158 Benchmark]: RCFGBuilder took 1244.93ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 49.3MB in the beginning and 58.4MB in the end (delta: -9.1MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2021-11-23 15:04:51,219 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 96.5MB. Free memory was 73.1MB in the beginning and 73.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 619.41ms. Allocated memory is still 96.5MB. Free memory was 55.6MB in the beginning and 58.1MB in the end (delta: -2.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.98ms. Allocated memory is still 96.5MB. Free memory was 58.1MB in the beginning and 53.5MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 98.74ms. Allocated memory is still 96.5MB. Free memory was 53.5MB in the beginning and 49.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1244.93ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 49.3MB in the beginning and 58.4MB in the end (delta: -9.1MB). Peak memory consumption was 27.8MB. 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 15:04:51,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/config/KojakReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/config/svcomp-Reach-32bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b3322c0c768700658989b53a570d5dd58dc6c9ba5f33ff303fa538b570ca8619 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 15:04:53,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 15:04:53,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 15:04:53,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 15:04:53,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 15:04:53,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 15:04:53,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 15:04:53,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 15:04:53,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 15:04:53,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 15:04:53,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 15:04:53,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 15:04:53,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 15:04:53,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 15:04:53,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 15:04:53,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 15:04:53,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 15:04:53,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 15:04:53,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 15:04:53,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 15:04:53,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 15:04:53,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 15:04:53,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 15:04:53,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 15:04:53,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 15:04:53,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 15:04:53,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 15:04:53,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 15:04:53,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 15:04:53,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 15:04:53,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 15:04:53,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 15:04:53,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 15:04:53,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 15:04:53,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 15:04:53,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 15:04:53,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 15:04:53,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 15:04:53,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 15:04:53,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 15:04:53,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 15:04:53,856 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/config/svcomp-Reach-32bit-Kojak_Bitvector.epf [2021-11-23 15:04:53,905 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 15:04:53,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 15:04:53,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 15:04:53,907 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-23 15:04:53,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 15:04:53,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 15:04:53,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 15:04:53,909 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 15:04:53,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 15:04:53,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 15:04:53,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 15:04:53,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 15:04:53,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 15:04:53,912 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 15:04:53,912 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 15:04:53,912 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 15:04:53,912 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 15:04:53,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 15:04:53,913 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 15:04:53,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 15:04:53,913 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 15:04:53,914 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 15:04:53,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 15:04:53,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 15:04:53,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 15:04:53,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 15:04:53,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 15:04:53,915 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 15:04:53,915 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 15:04:53,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 15:04:53,916 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2021-11-23 15:04:53,916 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 15:04:53,916 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_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3322c0c768700658989b53a570d5dd58dc6c9ba5f33ff303fa538b570ca8619 [2021-11-23 15:04:54,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 15:04:54,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 15:04:54,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 15:04:54,374 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 15:04:54,374 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 15:04:54,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-2.c [2021-11-23 15:04:54,453 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/data/1d38bb252/d0dfd8bc623141afaad0b57471a325c1/FLAG63121113b [2021-11-23 15:04:55,082 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 15:04:55,083 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-2.c [2021-11-23 15:04:55,101 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/data/1d38bb252/d0dfd8bc623141afaad0b57471a325c1/FLAG63121113b [2021-11-23 15:04:55,383 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/data/1d38bb252/d0dfd8bc623141afaad0b57471a325c1 [2021-11-23 15:04:55,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 15:04:55,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 15:04:55,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 15:04:55,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 15:04:55,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 15:04:55,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:04:55" (1/1) ... [2021-11-23 15:04:55,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b518cb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:55, skipping insertion in model container [2021-11-23 15:04:55,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:04:55" (1/1) ... [2021-11-23 15:04:55,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 15:04:55,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 15:04:55,629 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_cbb0defa-0f78-4ee0-858f-4c4a44094165/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-2.c[914,927] [2021-11-23 15:04:55,758 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_cbb0defa-0f78-4ee0-858f-4c4a44094165/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-2.c[7115,7128] [2021-11-23 15:04:55,865 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 15:04:55,882 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 15:04:55,894 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_cbb0defa-0f78-4ee0-858f-4c4a44094165/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-2.c[914,927] [2021-11-23 15:04:55,928 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_cbb0defa-0f78-4ee0-858f-4c4a44094165/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-2.c[7115,7128] [2021-11-23 15:04:56,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 15:04:56,059 INFO L208 MainTranslator]: Completed translation [2021-11-23 15:04:56,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:56 WrapperNode [2021-11-23 15:04:56,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 15:04:56,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 15:04:56,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 15:04:56,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 15:04:56,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:56" (1/1) ... [2021-11-23 15:04:56,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:56" (1/1) ... [2021-11-23 15:04:56,150 INFO L137 Inliner]: procedures = 76, calls = 90, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 945 [2021-11-23 15:04:56,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 15:04:56,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 15:04:56,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 15:04:56,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 15:04:56,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:56" (1/1) ... [2021-11-23 15:04:56,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:56" (1/1) ... [2021-11-23 15:04:56,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:56" (1/1) ... [2021-11-23 15:04:56,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:56" (1/1) ... [2021-11-23 15:04:56,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:56" (1/1) ... [2021-11-23 15:04:56,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:56" (1/1) ... [2021-11-23 15:04:56,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:56" (1/1) ... [2021-11-23 15:04:56,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 15:04:56,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 15:04:56,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 15:04:56,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 15:04:56,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:56" (1/1) ... [2021-11-23 15:04:56,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 15:04:56,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/z3 [2021-11-23 15:04:56,306 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 15:04:56,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 15:04:56,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 15:04:56,358 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 15:04:56,358 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 15:04:56,358 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-11-23 15:04:56,358 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-11-23 15:04:56,358 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 15:04:56,359 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 15:04:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 15:04:56,359 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 15:04:56,360 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-11-23 15:04:56,360 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-11-23 15:04:56,360 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 15:04:56,360 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 15:04:56,360 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 15:04:56,361 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 15:04:56,361 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-11-23 15:04:56,361 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-11-23 15:04:56,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 15:04:56,361 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-11-23 15:04:56,362 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-11-23 15:04:56,362 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-11-23 15:04:56,362 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-11-23 15:04:56,362 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 15:04:56,363 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 15:04:56,363 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 15:04:56,363 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 15:04:56,363 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-11-23 15:04:56,364 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-11-23 15:04:56,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 15:04:56,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 15:04:56,364 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 15:04:56,364 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 15:04:56,584 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 15:04:56,586 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 15:04:57,665 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 15:04:57,723 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 15:04:57,731 INFO L158 Benchmark]: Toolchain (without parser) took 2342.55ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 39.1MB in the beginning and 35.1MB in the end (delta: 4.0MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2021-11-23 15:04:57,733 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 60.8MB. Free memory was 41.6MB in the beginning and 41.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 15:04:57,734 INFO L158 Benchmark]: CACSL2BoogieTranslator took 672.87ms. Allocated memory is still 60.8MB. Free memory was 38.9MB in the beginning and 29.9MB in the end (delta: 9.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 15:04:57,735 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.33ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 29.7MB in the beginning and 53.1MB in the end (delta: -23.3MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-11-23 15:04:57,736 INFO L158 Benchmark]: Boogie Preprocessor took 107.43ms. Allocated memory is still 73.4MB. Free memory was 53.1MB in the beginning and 48.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 15:04:57,737 INFO L158 Benchmark]: RCFGBuilder took 1468.84ms. Allocated memory is still 73.4MB. Free memory was 48.6MB in the beginning and 35.1MB in the end (delta: 13.5MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2021-11-23 15:04:57,748 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 60.8MB. Free memory was 41.6MB in the beginning and 41.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 672.87ms. Allocated memory is still 60.8MB. Free memory was 38.9MB in the beginning and 29.9MB in the end (delta: 9.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.33ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 29.7MB in the beginning and 53.1MB in the end (delta: -23.3MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 107.43ms. Allocated memory is still 73.4MB. Free memory was 53.1MB in the beginning and 48.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1468.84ms. Allocated memory is still 73.4MB. Free memory was 48.6MB in the beginning and 35.1MB in the end (delta: 13.5MB). Peak memory consumption was 21.8MB. 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 15:04:57,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbb0defa-0f78-4ee0-858f-4c4a44094165/bin/ukojak-CwSLpZB5Qu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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