./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.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_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/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_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/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_6ae0e75a-e553-421e-a49f-5ea4e3faff56/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 906036225f588312d23f50dd6f109319810cf1ead43ce885e134bcc5a0be0190 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:16:33,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:16:33,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:16:33,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:16:33,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:16:33,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:16:33,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:16:33,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:16:33,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:16:33,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:16:33,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:16:33,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:16:33,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:16:33,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:16:33,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:16:33,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:16:33,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:16:33,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:16:33,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:16:33,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:16:33,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:16:33,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:16:33,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:16:33,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:16:33,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:16:33,372 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:16:33,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:16:33,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:16:33,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:16:33,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:16:33,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:16:33,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:16:33,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:16:33,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:16:33,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:16:33,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:16:33,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:16:33,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:16:33,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:16:33,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:16:33,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:16:33,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:16:33,462 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:16:33,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:16:33,463 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:16:33,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:16:33,472 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:16:33,473 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:16:33,473 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:16:33,473 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:16:33,474 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:16:33,474 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:16:33,475 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:16:33,476 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:16:33,476 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:16:33,476 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:16:33,477 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:16:33,477 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:16:33,477 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:16:33,477 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:16:33,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:16:33,479 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:16:33,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:16:33,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:16:33,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:16:33,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:16:33,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:16:33,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:16:33,481 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:16:33,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:16:33,481 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:16:33,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:16:33,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:16:33,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:16:33,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:16:33,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:16:33,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:16:33,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:16:33,484 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:16:33,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:16:33,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:16:33,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:16:33,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:16:33,485 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_6ae0e75a-e553-421e-a49f-5ea4e3faff56/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 906036225f588312d23f50dd6f109319810cf1ead43ce885e134bcc5a0be0190 [2021-11-23 17:16:33,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:16:33,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:16:33,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:16:33,837 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:16:33,838 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:16:33,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2021-11-23 17:16:33,914 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/data/df7ac17c9/1de2f46534424d5098845be4f1f9f2c2/FLAG77391cb5f [2021-11-23 17:16:34,593 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:16:34,596 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2021-11-23 17:16:34,617 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/data/df7ac17c9/1de2f46534424d5098845be4f1f9f2c2/FLAG77391cb5f [2021-11-23 17:16:34,848 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/data/df7ac17c9/1de2f46534424d5098845be4f1f9f2c2 [2021-11-23 17:16:34,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:16:34,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:16:34,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:16:34,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:16:34,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:16:34,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:16:34" (1/1) ... [2021-11-23 17:16:34,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@535d7ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:34, skipping insertion in model container [2021-11-23 17:16:34,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:16:34" (1/1) ... [2021-11-23 17:16:34,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:16:34,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:16:35,293 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_6ae0e75a-e553-421e-a49f-5ea4e3faff56/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c[14682,14695] [2021-11-23 17:16:35,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:16:35,306 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:16:35,432 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_6ae0e75a-e553-421e-a49f-5ea4e3faff56/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c[14682,14695] [2021-11-23 17:16:35,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:16:35,464 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:16:35,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:35 WrapperNode [2021-11-23 17:16:35,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:16:35,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:16:35,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:16:35,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:16:35,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:35" (1/1) ... [2021-11-23 17:16:35,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:35" (1/1) ... [2021-11-23 17:16:35,574 INFO L137 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 535 [2021-11-23 17:16:35,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:16:35,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:16:35,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:16:35,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:16:35,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:35" (1/1) ... [2021-11-23 17:16:35,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:35" (1/1) ... [2021-11-23 17:16:35,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:35" (1/1) ... [2021-11-23 17:16:35,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:35" (1/1) ... [2021-11-23 17:16:35,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:35" (1/1) ... [2021-11-23 17:16:35,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:35" (1/1) ... [2021-11-23 17:16:35,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:35" (1/1) ... [2021-11-23 17:16:35,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:16:35,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:16:35,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:16:35,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:16:35,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:35" (1/1) ... [2021-11-23 17:16:35,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:16:35,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:16:35,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:16:35,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:16:35,734 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2021-11-23 17:16:35,734 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2021-11-23 17:16:35,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:16:35,734 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2021-11-23 17:16:35,735 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2021-11-23 17:16:35,735 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-11-23 17:16:35,735 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-11-23 17:16:35,735 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2021-11-23 17:16:35,735 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2021-11-23 17:16:35,735 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 17:16:35,736 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 17:16:35,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:16:35,736 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2021-11-23 17:16:35,736 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2021-11-23 17:16:35,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:16:35,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:16:35,737 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2021-11-23 17:16:35,737 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2021-11-23 17:16:35,873 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:16:35,875 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:16:36,666 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:16:36,721 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 17:16:36,727 INFO L158 Benchmark]: Toolchain (without parser) took 1869.31ms. Allocated memory is still 136.3MB. Free memory was 102.8MB in the beginning and 68.3MB in the end (delta: 34.5MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2021-11-23 17:16:36,728 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 96.5MB. Free memory was 51.4MB in the beginning and 51.3MB in the end (delta: 39.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:16:36,729 INFO L158 Benchmark]: CACSL2BoogieTranslator took 603.84ms. Allocated memory is still 136.3MB. Free memory was 102.5MB in the beginning and 105.5MB in the end (delta: -3.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:16:36,730 INFO L158 Benchmark]: Boogie Procedure Inliner took 108.80ms. Allocated memory is still 136.3MB. Free memory was 105.1MB in the beginning and 101.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:16:36,732 INFO L158 Benchmark]: Boogie Preprocessor took 65.53ms. Allocated memory is still 136.3MB. Free memory was 101.9MB in the beginning and 99.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:16:36,733 INFO L158 Benchmark]: RCFGBuilder took 1082.60ms. Allocated memory is still 136.3MB. Free memory was 99.2MB in the beginning and 68.3MB in the end (delta: 30.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2021-11-23 17:16:36,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 96.5MB. Free memory was 51.4MB in the beginning and 51.3MB in the end (delta: 39.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 603.84ms. Allocated memory is still 136.3MB. Free memory was 102.5MB in the beginning and 105.5MB in the end (delta: -3.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 108.80ms. Allocated memory is still 136.3MB. Free memory was 105.1MB in the beginning and 101.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.53ms. Allocated memory is still 136.3MB. Free memory was 101.9MB in the beginning and 99.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1082.60ms. Allocated memory is still 136.3MB. Free memory was 99.2MB in the beginning and 68.3MB in the end (delta: 30.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:16:36,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/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_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/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_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/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_6ae0e75a-e553-421e-a49f-5ea4e3faff56/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 906036225f588312d23f50dd6f109319810cf1ead43ce885e134bcc5a0be0190 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:16:39,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:16:39,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:16:39,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:16:39,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:16:39,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:16:39,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:16:39,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:16:40,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:16:40,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:16:40,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:16:40,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:16:40,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:16:40,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:16:40,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:16:40,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:16:40,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:16:40,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:16:40,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:16:40,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:16:40,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:16:40,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:16:40,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:16:40,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:16:40,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:16:40,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:16:40,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:16:40,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:16:40,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:16:40,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:16:40,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:16:40,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:16:40,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:16:40,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:16:40,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:16:40,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:16:40,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:16:40,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:16:40,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:16:40,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:16:40,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:16:40,080 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:16:40,140 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:16:40,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:16:40,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:16:40,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:16:40,143 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:16:40,143 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:16:40,143 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:16:40,144 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:16:40,144 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:16:40,144 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:16:40,146 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:16:40,146 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:16:40,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:16:40,148 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:16:40,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:16:40,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:16:40,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:16:40,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:16:40,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:16:40,150 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:16:40,150 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:16:40,151 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:16:40,151 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:16:40,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:16:40,151 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:16:40,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:16:40,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:16:40,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:16:40,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:16:40,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:16:40,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:16:40,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:16:40,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:16:40,155 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:16:40,155 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:16:40,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:16:40,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:16:40,156 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:16:40,157 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_6ae0e75a-e553-421e-a49f-5ea4e3faff56/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 906036225f588312d23f50dd6f109319810cf1ead43ce885e134bcc5a0be0190 [2021-11-23 17:16:40,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:16:40,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:16:40,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:16:40,693 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:16:40,694 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:16:40,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2021-11-23 17:16:40,777 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/data/b76037e06/0004f4a88c5a45e8861a3d3f31824fb7/FLAG83fcd1b27 [2021-11-23 17:16:41,559 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:16:41,560 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2021-11-23 17:16:41,580 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/data/b76037e06/0004f4a88c5a45e8861a3d3f31824fb7/FLAG83fcd1b27 [2021-11-23 17:16:41,834 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/data/b76037e06/0004f4a88c5a45e8861a3d3f31824fb7 [2021-11-23 17:16:41,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:16:41,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:16:41,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:16:41,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:16:41,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:16:41,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:16:41" (1/1) ... [2021-11-23 17:16:41,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e8ae78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:41, skipping insertion in model container [2021-11-23 17:16:41,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:16:41" (1/1) ... [2021-11-23 17:16:41,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:16:41,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:16:42,338 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_6ae0e75a-e553-421e-a49f-5ea4e3faff56/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c[14682,14695] [2021-11-23 17:16:42,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:16:42,367 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:16:42,453 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_6ae0e75a-e553-421e-a49f-5ea4e3faff56/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c[14682,14695] [2021-11-23 17:16:42,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:16:42,476 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:16:42,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:42 WrapperNode [2021-11-23 17:16:42,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:16:42,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:16:42,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:16:42,479 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:16:42,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:42" (1/1) ... [2021-11-23 17:16:42,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:42" (1/1) ... [2021-11-23 17:16:42,583 INFO L137 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 514 [2021-11-23 17:16:42,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:16:42,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:16:42,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:16:42,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:16:42,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:42" (1/1) ... [2021-11-23 17:16:42,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:42" (1/1) ... [2021-11-23 17:16:42,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:42" (1/1) ... [2021-11-23 17:16:42,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:42" (1/1) ... [2021-11-23 17:16:42,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:42" (1/1) ... [2021-11-23 17:16:42,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:42" (1/1) ... [2021-11-23 17:16:42,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:42" (1/1) ... [2021-11-23 17:16:42,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:16:42,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:16:42,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:16:42,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:16:42,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:42" (1/1) ... [2021-11-23 17:16:42,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:16:42,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:16:42,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:16:42,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:16:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2021-11-23 17:16:42,857 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2021-11-23 17:16:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:16:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:16:42,858 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2021-11-23 17:16:42,858 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2021-11-23 17:16:42,858 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-11-23 17:16:42,858 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-11-23 17:16:42,859 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2021-11-23 17:16:42,859 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2021-11-23 17:16:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 17:16:42,863 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 17:16:42,864 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2021-11-23 17:16:42,864 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2021-11-23 17:16:42,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:16:42,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:16:42,864 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2021-11-23 17:16:42,865 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2021-11-23 17:16:43,065 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:16:43,067 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:16:43,939 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:16:43,957 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:16:43,963 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 17:16:43,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:16:43 BoogieIcfgContainer [2021-11-23 17:16:43,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:16:43,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:16:43,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:16:43,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:16:43,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:16:41" (1/3) ... [2021-11-23 17:16:43,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd6dbed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:16:43, skipping insertion in model container [2021-11-23 17:16:43,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:42" (2/3) ... [2021-11-23 17:16:43,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd6dbed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:16:43, skipping insertion in model container [2021-11-23 17:16:43,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:16:43" (3/3) ... [2021-11-23 17:16:43,981 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2021-11-23 17:16:43,988 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:16:43,988 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:16:44,052 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:16:44,060 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 17:16:44,060 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:16:44,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 166 states have (on average 1.5542168674698795) internal successors, (258), 168 states have internal predecessors, (258), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-23 17:16:44,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 17:16:44,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:16:44,097 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 17:16:44,098 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:16:44,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:16:44,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1527920627, now seen corresponding path program 1 times [2021-11-23 17:16:44,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:16:44,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735792548] [2021-11-23 17:16:44,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:16:44,125 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:16:44,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:16:44,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:16:44,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:16:44,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:16:44,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:16:44,410 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 17:16:44,415 INFO L158 Benchmark]: Toolchain (without parser) took 2574.75ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 32.1MB in the beginning and 38.0MB in the end (delta: -5.9MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2021-11-23 17:16:44,416 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 54.5MB. Free memory was 35.9MB in the beginning and 35.8MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:16:44,417 INFO L158 Benchmark]: CACSL2BoogieTranslator took 637.21ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 31.9MB in the beginning and 47.4MB in the end (delta: -15.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 17:16:44,418 INFO L158 Benchmark]: Boogie Procedure Inliner took 118.75ms. Allocated memory is still 71.3MB. Free memory was 47.2MB in the beginning and 44.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:16:44,420 INFO L158 Benchmark]: Boogie Preprocessor took 133.17ms. Allocated memory is still 71.3MB. Free memory was 44.1MB in the beginning and 41.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:16:44,426 INFO L158 Benchmark]: RCFGBuilder took 1235.21ms. Allocated memory is still 71.3MB. Free memory was 41.4MB in the beginning and 48.8MB in the end (delta: -7.4MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2021-11-23 17:16:44,429 INFO L158 Benchmark]: TraceAbstraction took 442.87ms. Allocated memory is still 71.3MB. Free memory was 48.2MB in the beginning and 38.0MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:16:44,434 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 35.9MB in the beginning and 35.8MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 637.21ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 31.9MB in the beginning and 47.4MB in the end (delta: -15.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 118.75ms. Allocated memory is still 71.3MB. Free memory was 47.2MB in the beginning and 44.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 133.17ms. Allocated memory is still 71.3MB. Free memory was 44.1MB in the beginning and 41.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1235.21ms. Allocated memory is still 71.3MB. Free memory was 41.4MB in the beginning and 48.8MB in the end (delta: -7.4MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * TraceAbstraction took 442.87ms. Allocated memory is still 71.3MB. Free memory was 48.2MB in the beginning and 38.0MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. 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 17:16:44,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0e75a-e553-421e-a49f-5ea4e3faff56/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