./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2018/Problem16.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_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/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_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2018/Problem16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/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_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/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 109d79acc9f0ebf30672589a81cb76b857da77dbea7f7c16d3f17b5b5da23748 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:09:29,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:09:29,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:09:29,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:09:29,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:09:29,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:09:29,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:09:29,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:09:29,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:09:29,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:09:29,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:09:29,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:09:29,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:09:29,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:09:29,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:09:29,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:09:29,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:09:29,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:09:29,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:09:29,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:09:29,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:09:29,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:09:29,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:09:29,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:09:29,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:09:29,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:09:29,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:09:29,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:09:29,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:09:29,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:09:29,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:09:29,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:09:29,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:09:29,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:09:29,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:09:29,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:09:29,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:09:29,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:09:29,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:09:29,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:09:29,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:09:29,676 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:09:29,703 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:09:29,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:09:29,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:09:29,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:09:29,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:09:29,705 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:09:29,705 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:09:29,706 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:09:29,706 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:09:29,706 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:09:29,706 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:09:29,707 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:09:29,707 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:09:29,707 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:09:29,708 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:09:29,708 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:09:29,708 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:09:29,709 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:09:29,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:09:29,710 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:09:29,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:09:29,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:09:29,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:09:29,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:09:29,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:09:29,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:09:29,712 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:09:29,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:09:29,712 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:09:29,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:09:29,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:09:29,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:09:29,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:09:29,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:09:29,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:09:29,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:09:29,714 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:09:29,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:09:29,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:09:29,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:09:29,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:09:29,715 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_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 109d79acc9f0ebf30672589a81cb76b857da77dbea7f7c16d3f17b5b5da23748 [2021-11-23 17:09:30,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:09:30,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:09:30,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:09:30,055 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:09:30,056 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:09:30,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/eca-rers2018/Problem16.c [2021-11-23 17:09:30,137 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/data/2582bbff2/df13490d8bf243e28e19e898b1d90044/FLAGafbde1ad9 [2021-11-23 17:09:35,374 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:09:35,376 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/sv-benchmarks/c/eca-rers2018/Problem16.c [2021-11-23 17:09:35,979 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/data/2582bbff2/df13490d8bf243e28e19e898b1d90044/FLAGafbde1ad9 [2021-11-23 17:09:35,999 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/data/2582bbff2/df13490d8bf243e28e19e898b1d90044 [2021-11-23 17:09:36,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:09:36,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:09:36,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:09:36,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:09:36,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:09:36,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:09:36" (1/1) ... [2021-11-23 17:09:36,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ba0519d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:36, skipping insertion in model container [2021-11-23 17:09:36,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:09:36" (1/1) ... [2021-11-23 17:09:36,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:09:38,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:09:39,336 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_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/sv-benchmarks/c/eca-rers2018/Problem16.c[778,791] [2021-11-23 17:09:39,421 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_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/sv-benchmarks/c/eca-rers2018/Problem16.c[817,830] [2021-11-23 17:11:35,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:11:35,326 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:11:35,339 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_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/sv-benchmarks/c/eca-rers2018/Problem16.c[778,791] [2021-11-23 17:11:35,339 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_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/sv-benchmarks/c/eca-rers2018/Problem16.c[817,830] [2021-11-23 17:11:44,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:11:48,651 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:11:48,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:48 WrapperNode [2021-11-23 17:11:48,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:11:48,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:11:48,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:11:48,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:11:48,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:48" (1/1) ... [2021-11-23 17:11:51,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:48" (1/1) ... [2021-11-23 17:11:57,601 INFO L137 Inliner]: procedures = 1385, calls = 1376, calls flagged for inlining = 1272, calls inlined = 1272, statements flattened = 632995 [2021-11-23 17:11:57,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:11:57,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:11:57,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:11:57,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:11:57,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:48" (1/1) ... [2021-11-23 17:11:57,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:48" (1/1) ... [2021-11-23 17:11:58,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:48" (1/1) ... [2021-11-23 17:11:58,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:48" (1/1) ... [2021-11-23 17:12:02,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:48" (1/1) ... [2021-11-23 17:12:02,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:48" (1/1) ... [2021-11-23 17:12:03,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:48" (1/1) ... [2021-11-23 17:12:05,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:12:05,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:12:05,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:12:05,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:12:05,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:11:48" (1/1) ... [2021-11-23 17:12:05,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:12:05,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:12:05,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:12:05,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:12:05,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:12:05,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:12:05,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:12:05,260 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_a [2021-11-23 17:12:05,261 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_a [2021-11-23 17:12:05,261 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_b [2021-11-23 17:12:05,261 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_b [2021-11-23 17:12:05,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:12:06,165 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:12:06,167 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:13:33,136 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:13:33,305 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 17:13:33,310 INFO L158 Benchmark]: Toolchain (without parser) took 237304.68ms. Allocated memory was 1.5GB in the beginning and 13.6GB in the end (delta: 12.1GB). Free memory was 1.0GB in the beginning and 9.3GB in the end (delta: -8.2GB). Peak memory consumption was 3.9GB. Max. memory is 16.1GB. [2021-11-23 17:13:33,311 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 90.2MB. Free memory is still 70.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:13:33,312 INFO L158 Benchmark]: CACSL2BoogieTranslator took 132646.58ms. Allocated memory was 1.5GB in the beginning and 9.2GB in the end (delta: 7.7GB). Free memory was 1.0GB in the beginning and 7.1GB in the end (delta: -6.0GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2021-11-23 17:13:33,313 INFO L158 Benchmark]: Boogie Procedure Inliner took 8937.40ms. Allocated memory was 9.2GB in the beginning and 11.9GB in the end (delta: 2.7GB). Free memory was 7.1GB in the beginning and 9.1GB in the end (delta: -2.0GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2021-11-23 17:13:33,313 INFO L158 Benchmark]: Boogie Preprocessor took 7529.70ms. Allocated memory is still 11.9GB. Free memory was 9.1GB in the beginning and 8.7GB in the end (delta: 415.2MB). Peak memory consumption was 882.9MB. Max. memory is 16.1GB. [2021-11-23 17:13:33,314 INFO L158 Benchmark]: RCFGBuilder took 88174.56ms. Allocated memory was 11.9GB in the beginning and 13.6GB in the end (delta: 1.7GB). Free memory was 8.7GB in the beginning and 9.3GB in the end (delta: -615.5MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2021-11-23 17:13:33,318 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 90.2MB. Free memory is still 70.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 132646.58ms. Allocated memory was 1.5GB in the beginning and 9.2GB in the end (delta: 7.7GB). Free memory was 1.0GB in the beginning and 7.1GB in the end (delta: -6.0GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 8937.40ms. Allocated memory was 9.2GB in the beginning and 11.9GB in the end (delta: 2.7GB). Free memory was 7.1GB in the beginning and 9.1GB in the end (delta: -2.0GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. * Boogie Preprocessor took 7529.70ms. Allocated memory is still 11.9GB. Free memory was 9.1GB in the beginning and 8.7GB in the end (delta: 415.2MB). Peak memory consumption was 882.9MB. Max. memory is 16.1GB. * RCFGBuilder took 88174.56ms. Allocated memory was 11.9GB in the beginning and 13.6GB in the end (delta: 1.7GB). Free memory was 8.7GB in the beginning and 9.3GB in the end (delta: -615.5MB). Peak memory consumption was 1.1GB. 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 17:13:33,596 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-23 17:13:33,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/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_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/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_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2018/Problem16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/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_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/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 109d79acc9f0ebf30672589a81cb76b857da77dbea7f7c16d3f17b5b5da23748 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:13:36,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:13:36,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:13:36,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:13:36,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:13:36,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:13:36,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:13:36,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:13:36,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:13:36,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:13:36,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:13:36,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:13:36,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:13:36,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:13:36,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:13:36,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:13:36,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:13:36,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:13:36,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:13:36,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:13:36,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:13:36,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:13:36,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:13:36,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:13:36,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:13:36,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:13:36,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:13:36,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:13:36,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:13:36,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:13:36,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:13:36,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:13:36,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:13:36,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:13:36,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:13:36,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:13:36,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:13:36,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:13:36,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:13:36,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:13:36,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:13:36,139 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:13:36,193 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:13:36,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:13:36,194 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:13:36,194 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:13:36,195 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:13:36,195 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:13:36,195 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:13:36,196 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:13:36,196 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:13:36,196 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:13:36,197 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:13:36,197 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:13:36,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:13:36,199 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:13:36,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:13:36,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:13:36,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:13:36,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:13:36,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:13:36,200 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:13:36,201 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:13:36,201 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:13:36,201 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:13:36,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:13:36,201 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:13:36,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:13:36,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:13:36,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:13:36,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:13:36,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:13:36,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:13:36,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:13:36,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:13:36,204 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:13:36,204 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:13:36,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:13:36,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:13:36,205 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:13:36,205 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_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 109d79acc9f0ebf30672589a81cb76b857da77dbea7f7c16d3f17b5b5da23748 [2021-11-23 17:13:36,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:13:36,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:13:36,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:13:36,630 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:13:36,631 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:13:36,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/eca-rers2018/Problem16.c [2021-11-23 17:13:36,697 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/data/58b016494/8c5052d9676e45baba24358c97c96869/FLAGafce00e6e [2021-11-23 17:13:42,410 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:13:42,411 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/sv-benchmarks/c/eca-rers2018/Problem16.c [2021-11-23 17:13:43,296 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/data/58b016494/8c5052d9676e45baba24358c97c96869/FLAGafce00e6e [2021-11-23 17:13:43,660 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/data/58b016494/8c5052d9676e45baba24358c97c96869 [2021-11-23 17:13:43,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:13:43,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:13:43,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:13:43,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:13:43,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:13:43,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:13:43" (1/1) ... [2021-11-23 17:13:43,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7265365e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:43, skipping insertion in model container [2021-11-23 17:13:43,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:13:43" (1/1) ... [2021-11-23 17:13:43,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:13:46,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:13:47,183 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_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/sv-benchmarks/c/eca-rers2018/Problem16.c[778,791] [2021-11-23 17:13:47,264 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_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/sv-benchmarks/c/eca-rers2018/Problem16.c[817,830] [2021-11-23 17:15:43,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:15:43,929 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:15:43,944 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_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/sv-benchmarks/c/eca-rers2018/Problem16.c[778,791] [2021-11-23 17:15:43,953 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_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/sv-benchmarks/c/eca-rers2018/Problem16.c[817,830] [2021-11-23 17:15:52,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:15:56,967 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:15:56,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:15:56 WrapperNode [2021-11-23 17:15:56,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:15:56,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:15:56,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:15:56,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:15:56,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:15:56" (1/1) ... [2021-11-23 17:15:58,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:15:56" (1/1) ... [2021-11-23 17:16:05,601 INFO L137 Inliner]: procedures = 1385, calls = 1376, calls flagged for inlining = 1272, calls inlined = 1272, statements flattened = 632994 [2021-11-23 17:16:05,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:16:05,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:16:05,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:16:05,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:16:05,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:15:56" (1/1) ... [2021-11-23 17:16:05,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:15:56" (1/1) ... [2021-11-23 17:16:06,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:15:56" (1/1) ... [2021-11-23 17:16:06,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:15:56" (1/1) ... [2021-11-23 17:16:10,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:15:56" (1/1) ... [2021-11-23 17:16:11,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:15:56" (1/1) ... [2021-11-23 17:16:12,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:15:56" (1/1) ... [2021-11-23 17:16:13,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:16:13,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:16:13,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:16:13,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:16:13,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:15:56" (1/1) ... [2021-11-23 17:16:13,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:16:13,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:16:13,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:16:13,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:16:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:16:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:16:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:16:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_a [2021-11-23 17:16:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_a [2021-11-23 17:16:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_b [2021-11-23 17:16:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_b [2021-11-23 17:16:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:16:14,811 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:16:14,813 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:18:10,584 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:18:10,669 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:18:10,669 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 17:18:10,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:18:10 BoogieIcfgContainer [2021-11-23 17:18:10,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:18:10,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:18:10,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:18:10,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:18:10,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:13:43" (1/3) ... [2021-11-23 17:18:10,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed01773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:18:10, skipping insertion in model container [2021-11-23 17:18:10,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:15:56" (2/3) ... [2021-11-23 17:18:10,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed01773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:18:10, skipping insertion in model container [2021-11-23 17:18:10,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:18:10" (3/3) ... [2021-11-23 17:18:10,688 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16.c [2021-11-23 17:18:10,693 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:18:10,693 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 17:18:10,772 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:18:10,779 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 17:18:10,779 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 17:18:10,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 8618 states, 8513 states have (on average 1.850111594032656) internal successors, (15750), 8515 states have internal predecessors, (15750), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2021-11-23 17:18:10,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 17:18:10,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:18:10,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:18:10,953 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:18:10,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:18:10,958 INFO L85 PathProgramCache]: Analyzing trace with hash 2026736529, now seen corresponding path program 1 times [2021-11-23 17:18:10,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:18:10,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215071051] [2021-11-23 17:18:10,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:18:10,976 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:18:10,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:18:10,979 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:18:10,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:18:11,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:18:11,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:18:11,712 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 17:18:11,717 INFO L158 Benchmark]: Toolchain (without parser) took 268051.92ms. Allocated memory was 2.2GB in the beginning and 13.5GB in the end (delta: 11.4GB). Free memory was 1.8GB in the beginning and 9.3GB in the end (delta: -7.5GB). Peak memory consumption was 3.9GB. Max. memory is 16.1GB. [2021-11-23 17:18:11,718 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 54.5MB. Free memory was 35.6MB in the beginning and 35.6MB in the end (delta: 39.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:18:11,719 INFO L158 Benchmark]: CACSL2BoogieTranslator took 133303.40ms. Allocated memory was 2.2GB in the beginning and 9.0GB in the end (delta: 6.8GB). Free memory was 1.8GB in the beginning and 7.0GB in the end (delta: -5.2GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. [2021-11-23 17:18:11,720 INFO L158 Benchmark]: Boogie Procedure Inliner took 8633.14ms. Allocated memory was 9.0GB in the beginning and 11.8GB in the end (delta: 2.8GB). Free memory was 7.0GB in the beginning and 8.9GB in the end (delta: -1.9GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2021-11-23 17:18:11,720 INFO L158 Benchmark]: Boogie Preprocessor took 8277.67ms. Allocated memory is still 11.8GB. Free memory was 8.9GB in the beginning and 8.5GB in the end (delta: 436.2MB). Peak memory consumption was 808.5MB. Max. memory is 16.1GB. [2021-11-23 17:18:11,721 INFO L158 Benchmark]: RCFGBuilder took 116797.99ms. Allocated memory was 11.8GB in the beginning and 13.5GB in the end (delta: 1.7GB). Free memory was 8.5GB in the beginning and 9.4GB in the end (delta: -862.1MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2021-11-23 17:18:11,722 INFO L158 Benchmark]: TraceAbstraction took 1033.80ms. Allocated memory is still 13.5GB. Free memory was 9.4GB in the beginning and 9.3GB in the end (delta: 75.5MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. [2021-11-23 17:18:11,726 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 54.5MB. Free memory was 35.6MB in the beginning and 35.6MB in the end (delta: 39.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 133303.40ms. Allocated memory was 2.2GB in the beginning and 9.0GB in the end (delta: 6.8GB). Free memory was 1.8GB in the beginning and 7.0GB in the end (delta: -5.2GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 8633.14ms. Allocated memory was 9.0GB in the beginning and 11.8GB in the end (delta: 2.8GB). Free memory was 7.0GB in the beginning and 8.9GB in the end (delta: -1.9GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Boogie Preprocessor took 8277.67ms. Allocated memory is still 11.8GB. Free memory was 8.9GB in the beginning and 8.5GB in the end (delta: 436.2MB). Peak memory consumption was 808.5MB. Max. memory is 16.1GB. * RCFGBuilder took 116797.99ms. Allocated memory was 11.8GB in the beginning and 13.5GB in the end (delta: 1.7GB). Free memory was 8.5GB in the beginning and 9.4GB in the end (delta: -862.1MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. * TraceAbstraction took 1033.80ms. Allocated memory is still 13.5GB. Free memory was 9.4GB in the beginning and 9.3GB in the end (delta: 75.5MB). Peak memory consumption was 75.5MB. 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 17:18:11,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c85aa352-da2a-4d1f-86e9-0377ae4fe91c/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