./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.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_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/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_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/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_483b6a7e-8e8b-4926-bb45-cb2aedaab510/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 c902137dd689344b33e1214981c74c26e47854ade5db7e5e71980f90fd07d90c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:16:53,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:16:53,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:16:53,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:16:53,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:16:53,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:16:53,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:16:53,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:16:53,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:16:53,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:16:53,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:16:53,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:16:53,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:16:53,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:16:53,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:16:53,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:16:53,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:16:53,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:16:53,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:16:53,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:16:53,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:16:53,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:16:53,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:16:53,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:16:53,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:16:53,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:16:53,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:16:53,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:16:53,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:16:53,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:16:53,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:16:53,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:16:53,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:16:53,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:16:53,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:16:53,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:16:53,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:16:53,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:16:53,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:16:53,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:16:53,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:16:53,756 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:16:53,796 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:16:53,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:16:53,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:16:53,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:16:53,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:16:53,799 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:16:53,799 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:16:53,799 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:16:53,800 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:16:53,800 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:16:53,801 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:16:53,801 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:16:53,801 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:16:53,802 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:16:53,802 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:16:53,803 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:16:53,803 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:16:53,803 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:16:53,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:16:53,805 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:16:53,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:16:53,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:16:53,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:16:53,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:16:53,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:16:53,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:16:53,807 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:16:53,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:16:53,808 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:16:53,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:16:53,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:16:53,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:16:53,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:16:53,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:16:53,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:16:53,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:16:53,810 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:16:53,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:16:53,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:16:53,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:16:53,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:16:53,812 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_483b6a7e-8e8b-4926-bb45-cb2aedaab510/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c902137dd689344b33e1214981c74c26e47854ade5db7e5e71980f90fd07d90c [2021-11-23 17:16:54,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:16:54,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:16:54,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:16:54,168 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:16:54,169 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:16:54,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2021-11-23 17:16:54,276 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/data/7e9d48a9b/6f5501889fd1433fbed022c6a3cbbde8/FLAGd87844050 [2021-11-23 17:16:54,887 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:16:54,888 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2021-11-23 17:16:54,896 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/data/7e9d48a9b/6f5501889fd1433fbed022c6a3cbbde8/FLAGd87844050 [2021-11-23 17:16:55,241 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/data/7e9d48a9b/6f5501889fd1433fbed022c6a3cbbde8 [2021-11-23 17:16:55,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:16:55,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:16:55,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:16:55,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:16:55,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:16:55,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:16:55" (1/1) ... [2021-11-23 17:16:55,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@170f0e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:55, skipping insertion in model container [2021-11-23 17:16:55,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:16:55" (1/1) ... [2021-11-23 17:16:55,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:16:55,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:16:55,538 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_483b6a7e-8e8b-4926-bb45-cb2aedaab510/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c[2947,2960] [2021-11-23 17:16:55,548 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:16:55,567 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:16:55,604 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_483b6a7e-8e8b-4926-bb45-cb2aedaab510/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c[2947,2960] [2021-11-23 17:16:55,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:16:55,631 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:16:55,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:55 WrapperNode [2021-11-23 17:16:55,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:16:55,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:16:55,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:16:55,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:16:55,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:55" (1/1) ... [2021-11-23 17:16:55,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:55" (1/1) ... [2021-11-23 17:16:55,718 INFO L137 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 151 [2021-11-23 17:16:55,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:16:55,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:16:55,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:16:55,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:16:55,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:55" (1/1) ... [2021-11-23 17:16:55,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:55" (1/1) ... [2021-11-23 17:16:55,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:55" (1/1) ... [2021-11-23 17:16:55,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:55" (1/1) ... [2021-11-23 17:16:55,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:55" (1/1) ... [2021-11-23 17:16:55,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:55" (1/1) ... [2021-11-23 17:16:55,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:55" (1/1) ... [2021-11-23 17:16:55,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:16:55,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:16:55,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:16:55,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:16:55,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:55" (1/1) ... [2021-11-23 17:16:55,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:16:55,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:16:55,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:16:55,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:16:55,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:16:55,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-23 17:16:55,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-23 17:16:55,855 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-23 17:16:55,855 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-23 17:16:55,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:16:55,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:16:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 17:16:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-23 17:16:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-23 17:16:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:16:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:16:55,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:16:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 17:16:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:16:55,859 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-23 17:16:56,016 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:16:56,018 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:16:56,439 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:16:56,494 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$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:284) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:16:56,499 INFO L158 Benchmark]: Toolchain (without parser) took 1250.45ms. Allocated memory is still 107.0MB. Free memory was 77.1MB in the beginning and 61.3MB in the end (delta: 15.8MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2021-11-23 17:16:56,500 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 107.0MB. Free memory was 64.3MB in the beginning and 64.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:16:56,501 INFO L158 Benchmark]: CACSL2BoogieTranslator took 384.90ms. Allocated memory is still 107.0MB. Free memory was 76.8MB in the beginning and 80.5MB in the end (delta: -3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:16:56,502 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.42ms. Allocated memory is still 107.0MB. Free memory was 80.5MB in the beginning and 78.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:16:56,503 INFO L158 Benchmark]: Boogie Preprocessor took 36.56ms. Allocated memory is still 107.0MB. Free memory was 78.4MB in the beginning and 77.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:16:56,504 INFO L158 Benchmark]: RCFGBuilder took 735.35ms. Allocated memory is still 107.0MB. Free memory was 77.0MB in the beginning and 61.3MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 17:16:56,509 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 107.0MB. Free memory was 64.3MB in the beginning and 64.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 384.90ms. Allocated memory is still 107.0MB. Free memory was 76.8MB in the beginning and 80.5MB in the end (delta: -3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.42ms. Allocated memory is still 107.0MB. Free memory was 80.5MB in the beginning and 78.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.56ms. Allocated memory is still 107.0MB. Free memory was 78.4MB in the beginning and 77.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 735.35ms. Allocated memory is still 107.0MB. Free memory was 77.0MB in the beginning and 61.3MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:16:56,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/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_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/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_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/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_483b6a7e-8e8b-4926-bb45-cb2aedaab510/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 c902137dd689344b33e1214981c74c26e47854ade5db7e5e71980f90fd07d90c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:16:59,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:16:59,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:16:59,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:16:59,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:16:59,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:16:59,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:16:59,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:16:59,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:16:59,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:16:59,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:16:59,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:16:59,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:16:59,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:16:59,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:16:59,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:16:59,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:16:59,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:16:59,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:16:59,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:16:59,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:16:59,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:16:59,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:16:59,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:16:59,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:16:59,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:16:59,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:16:59,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:16:59,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:16:59,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:16:59,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:16:59,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:16:59,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:16:59,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:16:59,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:16:59,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:16:59,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:16:59,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:16:59,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:16:59,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:16:59,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:16:59,705 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:16:59,745 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:16:59,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:16:59,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:16:59,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:16:59,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:16:59,748 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:16:59,748 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:16:59,748 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:16:59,749 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:16:59,749 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:16:59,749 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:16:59,749 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:16:59,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:16:59,751 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:16:59,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:16:59,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:16:59,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:16:59,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:16:59,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:16:59,753 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:16:59,753 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:16:59,753 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:16:59,753 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:16:59,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:16:59,754 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:16:59,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:16:59,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:16:59,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:16:59,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:16:59,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:16:59,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:16:59,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:16:59,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:16:59,757 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:16:59,757 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:16:59,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:16:59,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:16:59,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:16:59,758 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_483b6a7e-8e8b-4926-bb45-cb2aedaab510/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c902137dd689344b33e1214981c74c26e47854ade5db7e5e71980f90fd07d90c [2021-11-23 17:17:00,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:17:00,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:17:00,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:17:00,249 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:17:00,250 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:17:00,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2021-11-23 17:17:00,341 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/data/c4479a4e9/4aac878770b447a9b8e0dd75f018a8e1/FLAG2dd91bab1 [2021-11-23 17:17:01,045 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:17:01,046 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2021-11-23 17:17:01,055 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/data/c4479a4e9/4aac878770b447a9b8e0dd75f018a8e1/FLAG2dd91bab1 [2021-11-23 17:17:01,340 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/data/c4479a4e9/4aac878770b447a9b8e0dd75f018a8e1 [2021-11-23 17:17:01,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:17:01,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:17:01,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:17:01,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:17:01,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:17:01,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:17:01" (1/1) ... [2021-11-23 17:17:01,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43bcbdd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:01, skipping insertion in model container [2021-11-23 17:17:01,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:17:01" (1/1) ... [2021-11-23 17:17:01,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:17:01,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:17:01,667 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_483b6a7e-8e8b-4926-bb45-cb2aedaab510/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c[2947,2960] [2021-11-23 17:17:01,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:17:01,694 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 17:17:01,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:17:01,739 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_483b6a7e-8e8b-4926-bb45-cb2aedaab510/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c[2947,2960] [2021-11-23 17:17:01,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:17:01,766 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:17:01,795 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_483b6a7e-8e8b-4926-bb45-cb2aedaab510/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c[2947,2960] [2021-11-23 17:17:01,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:17:01,822 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:17:01,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:01 WrapperNode [2021-11-23 17:17:01,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:17:01,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:17:01,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:17:01,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:17:01,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:01" (1/1) ... [2021-11-23 17:17:01,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:01" (1/1) ... [2021-11-23 17:17:01,915 INFO L137 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 148 [2021-11-23 17:17:01,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:17:01,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:17:01,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:17:01,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:17:01,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:01" (1/1) ... [2021-11-23 17:17:01,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:01" (1/1) ... [2021-11-23 17:17:01,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:01" (1/1) ... [2021-11-23 17:17:01,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:01" (1/1) ... [2021-11-23 17:17:01,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:01" (1/1) ... [2021-11-23 17:17:01,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:01" (1/1) ... [2021-11-23 17:17:01,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:01" (1/1) ... [2021-11-23 17:17:01,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:17:02,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:17:02,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:17:02,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:17:02,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:01" (1/1) ... [2021-11-23 17:17:02,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:17:02,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:17:02,045 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:17:02,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:17:02,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:17:02,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:17:02,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:17:02,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 17:17:02,109 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-23 17:17:02,110 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-23 17:17:02,110 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-23 17:17:02,110 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-23 17:17:02,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-23 17:17:02,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-23 17:17:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:17:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:17:02,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:17:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:17:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 17:17:02,113 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-23 17:17:02,226 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:17:02,228 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:17:02,614 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:17:02,724 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$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:284) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:17:02,730 INFO L158 Benchmark]: Toolchain (without parser) took 1383.54ms. Allocated memory is still 79.7MB. Free memory was 44.4MB in the beginning and 39.1MB in the end (delta: 5.3MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2021-11-23 17:17:02,731 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 79.7MB. Free memory is still 60.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:17:02,732 INFO L158 Benchmark]: CACSL2BoogieTranslator took 476.54ms. Allocated memory is still 79.7MB. Free memory was 44.2MB in the beginning and 60.0MB in the end (delta: -15.8MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2021-11-23 17:17:02,733 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.51ms. Allocated memory is still 79.7MB. Free memory was 59.8MB in the beginning and 58.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:17:02,734 INFO L158 Benchmark]: Boogie Preprocessor took 82.19ms. Allocated memory is still 79.7MB. Free memory was 58.0MB in the beginning and 56.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:17:02,735 INFO L158 Benchmark]: RCFGBuilder took 727.20ms. Allocated memory is still 79.7MB. Free memory was 56.3MB in the beginning and 39.1MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-23 17:17:02,740 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 79.7MB. Free memory is still 60.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 476.54ms. Allocated memory is still 79.7MB. Free memory was 44.2MB in the beginning and 60.0MB in the end (delta: -15.8MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.51ms. Allocated memory is still 79.7MB. Free memory was 59.8MB in the beginning and 58.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.19ms. Allocated memory is still 79.7MB. Free memory was 58.0MB in the beginning and 56.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 727.20ms. Allocated memory is still 79.7MB. Free memory was 56.3MB in the beginning and 39.1MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. 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 17:17:02,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483b6a7e-8e8b-4926-bb45-cb2aedaab510/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable