./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/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_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/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_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/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 a46e7920fd800fb5978581c250ecd4216776e6eac1b8dfb89d2f8a9c2732a33c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:30:49,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:30:49,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:30:49,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:30:49,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:30:49,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:30:49,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:30:49,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:30:49,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:30:49,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:30:49,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:30:49,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:30:49,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:30:49,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:30:49,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:30:49,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:30:49,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:30:49,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:30:49,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:30:49,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:30:49,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:30:49,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:30:49,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:30:49,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:30:49,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:30:49,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:30:49,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:30:49,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:30:49,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:30:49,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:30:49,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:30:49,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:30:49,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:30:49,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:30:49,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:30:49,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:30:49,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:30:49,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:30:49,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:30:49,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:30:49,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:30:49,549 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:30:49,599 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:30:49,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:30:49,604 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:30:49,604 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:30:49,605 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:30:49,606 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:30:49,606 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:30:49,606 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:30:49,607 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:30:49,607 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:30:49,608 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:30:49,609 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:30:49,609 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:30:49,609 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:30:49,609 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:30:49,610 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:30:49,610 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:30:49,610 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:30:49,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:30:49,611 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:30:49,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:30:49,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:30:49,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:30:49,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:30:49,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:30:49,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:30:49,615 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:30:49,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:30:49,616 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:30:49,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:30:49,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:30:49,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:30:49,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:30:49,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:30:49,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:30:49,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:30:49,618 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:30:49,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:30:49,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:30:49,619 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:30:49,619 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:30:49,619 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_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a46e7920fd800fb5978581c250ecd4216776e6eac1b8dfb89d2f8a9c2732a33c [2021-11-23 17:30:50,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:30:50,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:30:50,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:30:50,049 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:30:50,054 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:30:50,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c [2021-11-23 17:30:50,145 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/data/402fd6e64/d667be217267473db629aec7b6b3eff2/FLAG570b0209f [2021-11-23 17:30:50,873 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:30:50,874 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c [2021-11-23 17:30:50,914 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/data/402fd6e64/d667be217267473db629aec7b6b3eff2/FLAG570b0209f [2021-11-23 17:30:51,112 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/data/402fd6e64/d667be217267473db629aec7b6b3eff2 [2021-11-23 17:30:51,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:30:51,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:30:51,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:30:51,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:30:51,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:30:51,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:30:51" (1/1) ... [2021-11-23 17:30:51,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e713e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:51, skipping insertion in model container [2021-11-23 17:30:51,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:30:51" (1/1) ... [2021-11-23 17:30:51,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:30:51,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:30:51,487 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_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c[914,927] [2021-11-23 17:30:51,556 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_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c[7115,7128] [2021-11-23 17:30:51,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:30:51,745 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:30:51,764 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_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c[914,927] [2021-11-23 17:30:51,800 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_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c[7115,7128] [2021-11-23 17:30:51,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:30:51,889 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:30:51,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:51 WrapperNode [2021-11-23 17:30:51,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:30:51,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:30:51,892 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:30:51,892 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:30:51,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:51" (1/1) ... [2021-11-23 17:30:51,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:51" (1/1) ... [2021-11-23 17:30:51,994 INFO L137 Inliner]: procedures = 77, calls = 93, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 1040 [2021-11-23 17:30:51,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:30:51,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:30:51,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:30:51,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:30:52,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:51" (1/1) ... [2021-11-23 17:30:52,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:51" (1/1) ... [2021-11-23 17:30:52,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:51" (1/1) ... [2021-11-23 17:30:52,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:51" (1/1) ... [2021-11-23 17:30:52,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:51" (1/1) ... [2021-11-23 17:30:52,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:51" (1/1) ... [2021-11-23 17:30:52,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:51" (1/1) ... [2021-11-23 17:30:52,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:30:52,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:30:52,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:30:52,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:30:52,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:51" (1/1) ... [2021-11-23 17:30:52,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:30:52,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:30:52,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:30:52,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:30:52,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:30:52,198 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 17:30:52,199 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 17:30:52,199 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-11-23 17:30:52,199 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-11-23 17:30:52,199 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 17:30:52,199 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 17:30:52,200 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 17:30:52,200 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 17:30:52,200 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-11-23 17:30:52,200 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-11-23 17:30:52,200 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 17:30:52,200 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 17:30:52,201 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 17:30:52,201 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 17:30:52,201 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-11-23 17:30:52,201 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-11-23 17:30:52,201 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-11-23 17:30:52,201 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-11-23 17:30:52,202 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-11-23 17:30:52,202 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-11-23 17:30:52,202 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 17:30:52,202 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 17:30:52,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:30:52,203 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 17:30:52,203 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 17:30:52,203 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-11-23 17:30:52,203 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-11-23 17:30:52,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:30:52,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:30:52,204 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 17:30:52,204 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 17:30:52,417 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:30:52,420 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:30:53,736 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:30:53,824 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 17:30:53,831 INFO L158 Benchmark]: Toolchain (without parser) took 2711.03ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 62.4MB in the beginning and 66.1MB in the end (delta: -3.7MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2021-11-23 17:30:53,832 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 102.8MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:30:53,835 INFO L158 Benchmark]: CACSL2BoogieTranslator took 759.31ms. Allocated memory is still 102.8MB. Free memory was 62.2MB in the beginning and 63.8MB in the end (delta: -1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:30:53,836 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.86ms. Allocated memory is still 102.8MB. Free memory was 63.8MB in the beginning and 58.9MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:30:53,838 INFO L158 Benchmark]: Boogie Preprocessor took 94.15ms. Allocated memory is still 102.8MB. Free memory was 58.9MB in the beginning and 54.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:30:53,839 INFO L158 Benchmark]: RCFGBuilder took 1737.33ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 54.7MB in the beginning and 66.8MB in the end (delta: -12.2MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2021-11-23 17:30:53,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 102.8MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 759.31ms. Allocated memory is still 102.8MB. Free memory was 62.2MB in the beginning and 63.8MB in the end (delta: -1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.86ms. Allocated memory is still 102.8MB. Free memory was 63.8MB in the beginning and 58.9MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 94.15ms. Allocated memory is still 102.8MB. Free memory was 58.9MB in the beginning and 54.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1737.33ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 54.7MB in the beginning and 66.8MB in the end (delta: -12.2MB). Peak memory consumption was 21.6MB. 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 17:30:53,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/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_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/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_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/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 a46e7920fd800fb5978581c250ecd4216776e6eac1b8dfb89d2f8a9c2732a33c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:30:56,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:30:56,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:30:56,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:30:56,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:30:56,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:30:56,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:30:56,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:30:56,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:30:56,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:30:56,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:30:56,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:30:56,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:30:56,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:30:56,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:30:56,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:30:56,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:30:56,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:30:56,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:30:56,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:30:56,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:30:56,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:30:56,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:30:56,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:30:56,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:30:56,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:30:56,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:30:56,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:30:56,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:30:56,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:30:56,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:30:56,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:30:56,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:30:56,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:30:56,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:30:56,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:30:56,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:30:56,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:30:56,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:30:56,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:30:56,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:30:56,862 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:30:56,896 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:30:56,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:30:56,897 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:30:56,897 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:30:56,898 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:30:56,898 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:30:56,899 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:30:56,899 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:30:56,899 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:30:56,900 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:30:56,900 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:30:56,900 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:30:56,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:30:56,902 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:30:56,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:30:56,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:30:56,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:30:56,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:30:56,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:30:56,903 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:30:56,904 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:30:56,904 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:30:56,904 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:30:56,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:30:56,905 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:30:56,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:30:56,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:30:56,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:30:56,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:30:56,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:30:56,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:30:56,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:30:56,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:30:56,908 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:30:56,908 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:30:56,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:30:56,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:30:56,909 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:30:56,909 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_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a46e7920fd800fb5978581c250ecd4216776e6eac1b8dfb89d2f8a9c2732a33c [2021-11-23 17:30:57,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:30:57,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:30:57,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:30:57,412 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:30:57,413 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:30:57,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c [2021-11-23 17:30:57,503 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/data/789229879/344e5f226f434791a0702f35775dce6d/FLAG4a5dcba61 [2021-11-23 17:30:58,339 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:30:58,340 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c [2021-11-23 17:30:58,366 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/data/789229879/344e5f226f434791a0702f35775dce6d/FLAG4a5dcba61 [2021-11-23 17:30:58,568 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/data/789229879/344e5f226f434791a0702f35775dce6d [2021-11-23 17:30:58,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:30:58,572 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:30:58,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:30:58,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:30:58,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:30:58,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:30:58" (1/1) ... [2021-11-23 17:30:58,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57633a77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:58, skipping insertion in model container [2021-11-23 17:30:58,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:30:58" (1/1) ... [2021-11-23 17:30:58,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:30:58,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:30:58,910 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_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c[914,927] [2021-11-23 17:30:59,052 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_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c[7115,7128] [2021-11-23 17:30:59,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:30:59,258 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:30:59,278 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_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c[914,927] [2021-11-23 17:30:59,327 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_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c[7115,7128] [2021-11-23 17:30:59,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:30:59,488 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:30:59,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:59 WrapperNode [2021-11-23 17:30:59,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:30:59,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:30:59,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:30:59,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:30:59,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:59" (1/1) ... [2021-11-23 17:30:59,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:59" (1/1) ... [2021-11-23 17:30:59,658 INFO L137 Inliner]: procedures = 78, calls = 93, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 1001 [2021-11-23 17:30:59,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:30:59,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:30:59,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:30:59,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:30:59,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:59" (1/1) ... [2021-11-23 17:30:59,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:59" (1/1) ... [2021-11-23 17:30:59,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:59" (1/1) ... [2021-11-23 17:30:59,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:59" (1/1) ... [2021-11-23 17:30:59,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:59" (1/1) ... [2021-11-23 17:30:59,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:59" (1/1) ... [2021-11-23 17:30:59,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:59" (1/1) ... [2021-11-23 17:30:59,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:30:59,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:30:59,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:30:59,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:30:59,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:59" (1/1) ... [2021-11-23 17:30:59,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:30:59,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:30:59,874 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:30:59,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:30:59,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:30:59,936 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 17:30:59,936 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 17:30:59,936 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-11-23 17:30:59,936 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-11-23 17:30:59,936 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 17:30:59,937 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 17:30:59,937 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 17:30:59,937 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 17:30:59,937 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-11-23 17:30:59,937 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-11-23 17:30:59,937 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 17:30:59,938 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 17:30:59,938 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 17:30:59,938 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 17:30:59,939 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-11-23 17:30:59,939 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-11-23 17:30:59,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:30:59,939 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-11-23 17:30:59,939 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-11-23 17:30:59,940 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-11-23 17:30:59,940 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-11-23 17:30:59,940 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 17:30:59,940 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 17:30:59,940 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 17:30:59,940 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 17:30:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-11-23 17:30:59,941 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-11-23 17:30:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:30:59,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:30:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 17:30:59,942 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 17:31:00,221 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:31:00,224 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:31:01,414 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:31:01,433 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:31:01,433 INFO L301 CfgBuilder]: Removed 19 assume(true) statements. [2021-11-23 17:31:01,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:31:01 BoogieIcfgContainer [2021-11-23 17:31:01,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:31:01,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:31:01,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:31:01,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:31:01,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:30:58" (1/3) ... [2021-11-23 17:31:01,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5e1fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:31:01, skipping insertion in model container [2021-11-23 17:31:01,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:30:59" (2/3) ... [2021-11-23 17:31:01,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5e1fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:31:01, skipping insertion in model container [2021-11-23 17:31:01,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:31:01" (3/3) ... [2021-11-23 17:31:01,463 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.12.cil-2.c [2021-11-23 17:31:01,470 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:31:01,470 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 17:31:01,616 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:31:01,628 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 17:31:01,628 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 17:31:01,694 INFO L276 IsEmpty]: Start isEmpty. Operand has 483 states, 426 states have (on average 1.6408450704225352) internal successors, (699), 432 states have internal predecessors, (699), 40 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-23 17:31:01,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 17:31:01,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:31:01,716 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:31:01,717 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:31:01,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:31:01,724 INFO L85 PathProgramCache]: Analyzing trace with hash -353968614, now seen corresponding path program 1 times [2021-11-23 17:31:01,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:31:01,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779435084] [2021-11-23 17:31:01,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:31:01,747 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:31:01,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:31:01,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:31:01,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:31:01,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-23 17:31:02,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:31:02,053 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 17:31:02,059 INFO L158 Benchmark]: Toolchain (without parser) took 3485.56ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 33.8MB in the beginning and 52.6MB in the end (delta: -18.8MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2021-11-23 17:31:02,060 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 56.6MB. Free memory was 37.6MB in the beginning and 37.5MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:31:02,061 INFO L158 Benchmark]: CACSL2BoogieTranslator took 908.41ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 33.6MB in the beginning and 38.8MB in the end (delta: -5.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:31:02,062 INFO L158 Benchmark]: Boogie Procedure Inliner took 167.96ms. Allocated memory is still 69.2MB. Free memory was 38.8MB in the beginning and 51.0MB in the end (delta: -12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:31:02,063 INFO L158 Benchmark]: Boogie Preprocessor took 167.10ms. Allocated memory is still 69.2MB. Free memory was 50.7MB in the beginning and 46.3MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:31:02,064 INFO L158 Benchmark]: RCFGBuilder took 1609.89ms. Allocated memory is still 69.2MB. Free memory was 46.3MB in the beginning and 32.0MB in the end (delta: 14.3MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2021-11-23 17:31:02,065 INFO L158 Benchmark]: TraceAbstraction took 600.98ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 31.3MB in the beginning and 52.6MB in the end (delta: -21.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:31:02,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 56.6MB. Free memory was 37.6MB in the beginning and 37.5MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 908.41ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 33.6MB in the beginning and 38.8MB in the end (delta: -5.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 167.96ms. Allocated memory is still 69.2MB. Free memory was 38.8MB in the beginning and 51.0MB in the end (delta: -12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 167.10ms. Allocated memory is still 69.2MB. Free memory was 50.7MB in the beginning and 46.3MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1609.89ms. Allocated memory is still 69.2MB. Free memory was 46.3MB in the beginning and 32.0MB in the end (delta: 14.3MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. * TraceAbstraction took 600.98ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 31.3MB in the beginning and 52.6MB in the end (delta: -21.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:31:02,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b9d5f7-3ccf-495d-a1e4-edeadf1be112/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