./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.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_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/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_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/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_90294257-85f5-447f-a17c-a7421d3bba03/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 e8ee20bd48f38d06d172550f7b4afad7a85599a8fd397bba890e4eeccd52db93 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:03:53,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:03:53,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:03:53,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:03:53,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:03:53,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:03:53,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:03:53,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:03:53,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:03:53,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:03:53,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:03:53,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:03:53,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:03:53,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:03:53,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:03:53,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:03:53,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:03:53,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:03:53,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:03:53,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:03:53,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:03:53,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:03:53,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:03:53,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:03:53,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:03:53,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:03:53,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:03:53,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:03:53,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:03:53,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:03:53,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:03:53,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:03:53,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:03:53,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:03:53,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:03:53,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:03:53,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:03:53,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:03:53,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:03:53,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:03:53,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:03:53,628 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:03:53,687 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:03:53,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:03:53,688 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:03:53,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:03:53,690 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:03:53,690 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:03:53,690 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:03:53,690 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:03:53,691 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:03:53,691 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:03:53,692 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:03:53,692 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:03:53,693 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:03:53,693 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:03:53,693 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:03:53,694 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:03:53,694 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:03:53,694 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:03:53,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:03:53,695 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:03:53,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:03:53,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:03:53,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:03:53,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:03:53,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:03:53,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:03:53,698 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:03:53,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:03:53,699 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:03:53,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:03:53,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:03:53,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:03:53,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:03:53,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:03:53,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:03:53,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:03:53,701 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:03:53,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:03:53,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:03:53,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:03:53,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:03:53,702 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_90294257-85f5-447f-a17c-a7421d3bba03/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8ee20bd48f38d06d172550f7b4afad7a85599a8fd397bba890e4eeccd52db93 [2021-11-23 17:03:53,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:03:54,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:03:54,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:03:54,015 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:03:54,016 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:03:54,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-2.c [2021-11-23 17:03:54,086 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/data/41a21a41c/e1d89b6635414e38bf73f5ccee6c6dfd/FLAG9b2867936 [2021-11-23 17:03:54,633 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:03:54,634 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-2.c [2021-11-23 17:03:54,664 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/data/41a21a41c/e1d89b6635414e38bf73f5ccee6c6dfd/FLAG9b2867936 [2021-11-23 17:03:54,941 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/data/41a21a41c/e1d89b6635414e38bf73f5ccee6c6dfd [2021-11-23 17:03:54,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:03:54,946 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:03:54,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:03:54,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:03:54,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:03:54,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:03:54" (1/1) ... [2021-11-23 17:03:54,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc12ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:54, skipping insertion in model container [2021-11-23 17:03:54,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:03:54" (1/1) ... [2021-11-23 17:03:54,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:03:55,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:03:55,300 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_90294257-85f5-447f-a17c-a7421d3bba03/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-2.c[913,926] [2021-11-23 17:03:55,360 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_90294257-85f5-447f-a17c-a7421d3bba03/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-2.c[5977,5990] [2021-11-23 17:03:55,458 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:03:55,481 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:03:55,497 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_90294257-85f5-447f-a17c-a7421d3bba03/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-2.c[913,926] [2021-11-23 17:03:55,526 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_90294257-85f5-447f-a17c-a7421d3bba03/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-2.c[5977,5990] [2021-11-23 17:03:55,610 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:03:55,647 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:03:55,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:55 WrapperNode [2021-11-23 17:03:55,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:03:55,651 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:03:55,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:03:55,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:03:55,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:55" (1/1) ... [2021-11-23 17:03:55,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:55" (1/1) ... [2021-11-23 17:03:55,770 INFO L137 Inliner]: procedures = 64, calls = 73, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 828 [2021-11-23 17:03:55,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:03:55,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:03:55,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:03:55,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:03:55,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:55" (1/1) ... [2021-11-23 17:03:55,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:55" (1/1) ... [2021-11-23 17:03:55,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:55" (1/1) ... [2021-11-23 17:03:55,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:55" (1/1) ... [2021-11-23 17:03:55,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:55" (1/1) ... [2021-11-23 17:03:55,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:55" (1/1) ... [2021-11-23 17:03:55,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:55" (1/1) ... [2021-11-23 17:03:55,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:03:55,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:03:55,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:03:55,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:03:55,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:03:55" (1/1) ... [2021-11-23 17:03:55,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:03:55,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:03:55,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:03:55,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:03:55,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:03:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 17:03:55,960 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 17:03:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2021-11-23 17:03:55,960 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2021-11-23 17:03:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 17:03:55,960 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 17:03:55,961 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 17:03:55,961 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 17:03:55,961 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 17:03:55,961 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 17:03:55,961 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 17:03:55,961 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 17:03:55,962 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 17:03:55,962 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 17:03:55,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:03:55,962 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 17:03:55,962 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 17:03:55,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:03:55,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:03:55,963 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 17:03:55,963 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 17:03:55,963 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-11-23 17:03:55,963 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-11-23 17:03:56,077 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:03:56,087 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:03:56,914 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:03:56,990 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:03:57,001 INFO L158 Benchmark]: Toolchain (without parser) took 2052.49ms. Allocated memory was 115.3MB in the beginning and 144.7MB in the end (delta: 29.4MB). Free memory was 76.1MB in the beginning and 105.5MB in the end (delta: -29.5MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. [2021-11-23 17:03:57,001 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 115.3MB. Free memory is still 93.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:03:57,004 INFO L158 Benchmark]: CACSL2BoogieTranslator took 692.38ms. Allocated memory is still 115.3MB. Free memory was 75.9MB in the beginning and 78.6MB in the end (delta: -2.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:03:57,005 INFO L158 Benchmark]: Boogie Procedure Inliner took 120.90ms. Allocated memory is still 115.3MB. Free memory was 78.6MB in the beginning and 74.9MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:03:57,006 INFO L158 Benchmark]: Boogie Preprocessor took 94.96ms. Allocated memory is still 115.3MB. Free memory was 74.9MB in the beginning and 71.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:03:57,007 INFO L158 Benchmark]: RCFGBuilder took 1129.46ms. Allocated memory was 115.3MB in the beginning and 144.7MB in the end (delta: 29.4MB). Free memory was 71.3MB in the beginning and 105.5MB in the end (delta: -34.3MB). Peak memory consumption was 40.2MB. Max. memory is 16.1GB. [2021-11-23 17:03:57,018 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 115.3MB. Free memory is still 93.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 692.38ms. Allocated memory is still 115.3MB. Free memory was 75.9MB in the beginning and 78.6MB in the end (delta: -2.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 120.90ms. Allocated memory is still 115.3MB. Free memory was 78.6MB in the beginning and 74.9MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 94.96ms. Allocated memory is still 115.3MB. Free memory was 74.9MB in the beginning and 71.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1129.46ms. Allocated memory was 115.3MB in the beginning and 144.7MB in the end (delta: 29.4MB). Free memory was 71.3MB in the beginning and 105.5MB in the end (delta: -34.3MB). Peak memory consumption was 40.2MB. 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 17:03:57,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/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_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/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_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/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_90294257-85f5-447f-a17c-a7421d3bba03/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 e8ee20bd48f38d06d172550f7b4afad7a85599a8fd397bba890e4eeccd52db93 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:03:59,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:03:59,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:03:59,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:03:59,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:03:59,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:03:59,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:03:59,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:03:59,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:03:59,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:03:59,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:03:59,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:03:59,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:03:59,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:03:59,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:03:59,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:03:59,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:03:59,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:03:59,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:03:59,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:03:59,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:03:59,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:03:59,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:03:59,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:03:59,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:03:59,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:03:59,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:03:59,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:03:59,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:03:59,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:03:59,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:03:59,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:03:59,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:03:59,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:03:59,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:03:59,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:03:59,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:03:59,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:03:59,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:03:59,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:03:59,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:03:59,593 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:03:59,640 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:03:59,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:03:59,641 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:03:59,641 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:03:59,642 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:03:59,642 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:03:59,642 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:03:59,643 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:03:59,643 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:03:59,643 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:03:59,644 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:03:59,644 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:03:59,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:03:59,646 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:03:59,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:03:59,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:03:59,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:03:59,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:03:59,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:03:59,647 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:03:59,647 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:03:59,648 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:03:59,648 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:03:59,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:03:59,648 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:03:59,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:03:59,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:03:59,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:03:59,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:03:59,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:03:59,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:03:59,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:03:59,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:03:59,650 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:03:59,651 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:03:59,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:03:59,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:03:59,651 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:03:59,651 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_90294257-85f5-447f-a17c-a7421d3bba03/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8ee20bd48f38d06d172550f7b4afad7a85599a8fd397bba890e4eeccd52db93 [2021-11-23 17:04:00,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:04:00,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:04:00,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:04:00,095 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:04:00,101 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:04:00,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-2.c [2021-11-23 17:04:00,167 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/data/756f91f9e/4d719fd759bc45db852e6d30015a4789/FLAG050e92d5c [2021-11-23 17:04:00,733 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:04:00,734 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-2.c [2021-11-23 17:04:00,757 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/data/756f91f9e/4d719fd759bc45db852e6d30015a4789/FLAG050e92d5c [2021-11-23 17:04:01,068 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/data/756f91f9e/4d719fd759bc45db852e6d30015a4789 [2021-11-23 17:04:01,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:04:01,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:04:01,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:04:01,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:04:01,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:04:01,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:04:01" (1/1) ... [2021-11-23 17:04:01,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@376dfefc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:01, skipping insertion in model container [2021-11-23 17:04:01,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:04:01" (1/1) ... [2021-11-23 17:04:01,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:04:01,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:04:01,302 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_90294257-85f5-447f-a17c-a7421d3bba03/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-2.c[913,926] [2021-11-23 17:04:01,398 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_90294257-85f5-447f-a17c-a7421d3bba03/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-2.c[5977,5990] [2021-11-23 17:04:01,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:04:01,511 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:04:01,524 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_90294257-85f5-447f-a17c-a7421d3bba03/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-2.c[913,926] [2021-11-23 17:04:01,541 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_90294257-85f5-447f-a17c-a7421d3bba03/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-2.c[5977,5990] [2021-11-23 17:04:01,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:04:01,647 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:04:01,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:01 WrapperNode [2021-11-23 17:04:01,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:04:01,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:04:01,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:04:01,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:04:01,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:01" (1/1) ... [2021-11-23 17:04:01,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:01" (1/1) ... [2021-11-23 17:04:01,767 INFO L137 Inliner]: procedures = 65, calls = 73, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 794 [2021-11-23 17:04:01,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:04:01,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:04:01,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:04:01,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:04:01,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:01" (1/1) ... [2021-11-23 17:04:01,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:01" (1/1) ... [2021-11-23 17:04:01,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:01" (1/1) ... [2021-11-23 17:04:01,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:01" (1/1) ... [2021-11-23 17:04:01,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:01" (1/1) ... [2021-11-23 17:04:01,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:01" (1/1) ... [2021-11-23 17:04:01,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:01" (1/1) ... [2021-11-23 17:04:01,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:04:01,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:04:01,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:04:01,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:04:01,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:01" (1/1) ... [2021-11-23 17:04:01,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:04:01,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:04:01,908 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:04:01,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:04:01,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:04:01,951 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 17:04:01,951 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 17:04:01,951 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2021-11-23 17:04:01,952 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2021-11-23 17:04:01,952 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 17:04:01,952 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 17:04:01,952 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 17:04:01,952 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 17:04:01,952 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 17:04:01,953 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 17:04:01,953 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 17:04:01,953 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 17:04:01,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:04:01,953 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 17:04:01,954 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 17:04:01,954 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 17:04:01,954 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 17:04:01,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:04:01,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:04:01,954 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 17:04:01,955 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 17:04:01,955 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-11-23 17:04:01,955 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-11-23 17:04:02,077 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:04:02,079 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:04:02,940 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:04:02,952 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:04:02,952 INFO L301 CfgBuilder]: Removed 15 assume(true) statements. [2021-11-23 17:04:02,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:04:02 BoogieIcfgContainer [2021-11-23 17:04:02,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:04:02,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:04:02,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:04:02,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:04:02,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:04:01" (1/3) ... [2021-11-23 17:04:02,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2826a376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:04:02, skipping insertion in model container [2021-11-23 17:04:02,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:01" (2/3) ... [2021-11-23 17:04:02,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2826a376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:04:02, skipping insertion in model container [2021-11-23 17:04:02,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:04:02" (3/3) ... [2021-11-23 17:04:02,963 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.08.cil-2.c [2021-11-23 17:04:02,969 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:04:02,969 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 17:04:03,023 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:04:03,030 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 17:04:03,030 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 17:04:03,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 319 states have (on average 1.6363636363636365) internal successors, (522), 326 states have internal predecessors, (522), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-23 17:04:03,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 17:04:03,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:04:03,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:04:03,077 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:04:03,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:04:03,083 INFO L85 PathProgramCache]: Analyzing trace with hash 975789426, now seen corresponding path program 1 times [2021-11-23 17:04:03,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:04:03,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707510138] [2021-11-23 17:04:03,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:04:03,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:04:03,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:04:03,101 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:04:03,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:04:03,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:04:03,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:04:03,381 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:04:03,385 INFO L158 Benchmark]: Toolchain (without parser) took 2311.08ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 31.5MB in the beginning and 45.7MB in the end (delta: -14.1MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2021-11-23 17:04:03,386 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory was 35.6MB in the beginning and 35.5MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:04:03,387 INFO L158 Benchmark]: CACSL2BoogieTranslator took 572.90ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 31.4MB in the beginning and 45.3MB in the end (delta: -13.9MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2021-11-23 17:04:03,387 INFO L158 Benchmark]: Boogie Procedure Inliner took 119.15ms. Allocated memory is still 73.4MB. Free memory was 45.3MB in the beginning and 41.4MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:04:03,388 INFO L158 Benchmark]: Boogie Preprocessor took 82.94ms. Allocated memory is still 73.4MB. Free memory was 41.4MB in the beginning and 37.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:04:03,389 INFO L158 Benchmark]: RCFGBuilder took 1102.73ms. Allocated memory is still 73.4MB. Free memory was 37.6MB in the beginning and 37.7MB in the end (delta: -85.4kB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2021-11-23 17:04:03,389 INFO L158 Benchmark]: TraceAbstraction took 426.12ms. Allocated memory is still 73.4MB. Free memory was 37.0MB in the beginning and 45.7MB in the end (delta: -8.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:04:03,399 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory was 35.6MB in the beginning and 35.5MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 572.90ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 31.4MB in the beginning and 45.3MB in the end (delta: -13.9MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 119.15ms. Allocated memory is still 73.4MB. Free memory was 45.3MB in the beginning and 41.4MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.94ms. Allocated memory is still 73.4MB. Free memory was 41.4MB in the beginning and 37.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1102.73ms. Allocated memory is still 73.4MB. Free memory was 37.6MB in the beginning and 37.7MB in the end (delta: -85.4kB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * TraceAbstraction took 426.12ms. Allocated memory is still 73.4MB. Free memory was 37.0MB in the beginning and 45.7MB in the end (delta: -8.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:04:03,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90294257-85f5-447f-a17c-a7421d3bba03/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