./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.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_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/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_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/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_16cbf764-7044-4549-a4e6-146c6fdb35a6/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 c8331ae1a542eb033e77244b050255025a53bdff6172fe7667dd71867965088c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:09:08,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:09:08,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:09:09,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:09:09,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:09:09,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:09:09,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:09:09,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:09:09,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:09:09,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:09:09,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:09:09,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:09:09,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:09:09,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:09:09,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:09:09,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:09:09,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:09:09,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:09:09,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:09:09,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:09:09,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:09:09,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:09:09,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:09:09,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:09:09,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:09:09,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:09:09,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:09:09,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:09:09,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:09:09,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:09:09,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:09:09,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:09:09,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:09:09,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:09:09,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:09:09,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:09:09,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:09:09,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:09:09,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:09:09,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:09:09,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:09:09,057 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:09:09,082 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:09:09,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:09:09,083 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:09:09,083 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:09:09,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:09:09,084 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:09:09,084 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:09:09,084 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:09:09,084 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:09:09,085 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:09:09,085 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:09:09,085 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:09:09,085 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:09:09,085 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:09:09,085 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:09:09,086 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:09:09,086 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:09:09,086 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:09:09,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:09:09,087 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:09:09,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:09:09,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:09:09,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:09:09,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:09:09,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:09:09,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:09:09,094 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:09:09,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:09:09,095 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:09:09,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:09:09,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:09:09,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:09:09,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:09:09,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:09:09,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:09:09,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:09:09,099 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:09:09,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:09:09,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:09:09,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:09:09,100 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:09:09,100 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_16cbf764-7044-4549-a4e6-146c6fdb35a6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8331ae1a542eb033e77244b050255025a53bdff6172fe7667dd71867965088c [2021-11-23 17:09:09,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:09:09,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:09:09,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:09:09,396 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:09:09,397 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:09:09,398 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c [2021-11-23 17:09:09,488 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/data/de6c37d28/8a7736282bc640c59b78f2fd8aef1b9b/FLAG5232c97df [2021-11-23 17:09:10,032 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:09:10,033 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c [2021-11-23 17:09:10,051 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/data/de6c37d28/8a7736282bc640c59b78f2fd8aef1b9b/FLAG5232c97df [2021-11-23 17:09:10,333 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/data/de6c37d28/8a7736282bc640c59b78f2fd8aef1b9b [2021-11-23 17:09:10,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:09:10,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:09:10,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:09:10,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:09:10,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:09:10,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:09:10" (1/1) ... [2021-11-23 17:09:10,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd8db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:10, skipping insertion in model container [2021-11-23 17:09:10,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:09:10" (1/1) ... [2021-11-23 17:09:10,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:09:10,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:09:10,613 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_16cbf764-7044-4549-a4e6-146c6fdb35a6/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c[911,924] [2021-11-23 17:09:10,683 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_16cbf764-7044-4549-a4e6-146c6fdb35a6/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c[8416,8429] [2021-11-23 17:09:10,832 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:09:10,842 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:09:10,854 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_16cbf764-7044-4549-a4e6-146c6fdb35a6/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c[911,924] [2021-11-23 17:09:10,873 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_16cbf764-7044-4549-a4e6-146c6fdb35a6/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c[8416,8429] [2021-11-23 17:09:10,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:09:10,945 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:09:10,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:10 WrapperNode [2021-11-23 17:09:10,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:09:10,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:09:10,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:09:10,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:09:10,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:10" (1/1) ... [2021-11-23 17:09:10,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:10" (1/1) ... [2021-11-23 17:09:11,055 INFO L137 Inliner]: procedures = 77, calls = 94, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 1020 [2021-11-23 17:09:11,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:09:11,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:09:11,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:09:11,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:09:11,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:10" (1/1) ... [2021-11-23 17:09:11,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:10" (1/1) ... [2021-11-23 17:09:11,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:10" (1/1) ... [2021-11-23 17:09:11,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:10" (1/1) ... [2021-11-23 17:09:11,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:10" (1/1) ... [2021-11-23 17:09:11,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:10" (1/1) ... [2021-11-23 17:09:11,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:10" (1/1) ... [2021-11-23 17:09:11,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:09:11,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:09:11,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:09:11,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:09:11,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:10" (1/1) ... [2021-11-23 17:09:11,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:09:11,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:09:11,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:09:11,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:09:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:09:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 17:09:11,236 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 17:09:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-11-23 17:09:11,237 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-11-23 17:09:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 17:09:11,237 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 17:09:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 17:09:11,237 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 17:09:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-11-23 17:09:11,237 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-11-23 17:09:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 17:09:11,238 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 17:09:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 17:09:11,238 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 17:09:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-11-23 17:09:11,238 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-11-23 17:09:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-11-23 17:09:11,239 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-11-23 17:09:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-11-23 17:09:11,239 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-11-23 17:09:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 17:09:11,239 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 17:09:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:09:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 17:09:11,240 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 17:09:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-11-23 17:09:11,240 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-11-23 17:09:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:09:11,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:09:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 17:09:11,242 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 17:09:11,374 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:09:11,375 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:09:12,258 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2021-11-23 17:09:12,258 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2021-11-23 17:09:12,381 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:09:12,463 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$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 17:09:12,472 INFO L158 Benchmark]: Toolchain (without parser) took 2133.23ms. Allocated memory is still 96.5MB. Free memory was 68.1MB in the beginning and 61.5MB in the end (delta: 6.6MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2021-11-23 17:09:12,473 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 79.7MB. Free memory is still 37.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:09:12,474 INFO L158 Benchmark]: CACSL2BoogieTranslator took 605.23ms. Allocated memory is still 96.5MB. Free memory was 67.8MB in the beginning and 58.7MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:09:12,476 INFO L158 Benchmark]: Boogie Procedure Inliner took 108.26ms. Allocated memory is still 96.5MB. Free memory was 58.7MB in the beginning and 54.1MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:09:12,477 INFO L158 Benchmark]: Boogie Preprocessor took 67.63ms. Allocated memory is still 96.5MB. Free memory was 54.1MB in the beginning and 49.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:09:12,478 INFO L158 Benchmark]: RCFGBuilder took 1345.25ms. Allocated memory is still 96.5MB. Free memory was 49.9MB in the beginning and 61.5MB in the end (delta: -11.7MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2021-11-23 17:09:12,483 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 79.7MB. Free memory is still 37.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 605.23ms. Allocated memory is still 96.5MB. Free memory was 67.8MB in the beginning and 58.7MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 108.26ms. Allocated memory is still 96.5MB. Free memory was 58.7MB in the beginning and 54.1MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.63ms. Allocated memory is still 96.5MB. Free memory was 54.1MB in the beginning and 49.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1345.25ms. Allocated memory is still 96.5MB. Free memory was 49.9MB in the beginning and 61.5MB in the end (delta: -11.7MB). Peak memory consumption was 22.0MB. 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 17:09:12,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/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_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/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_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/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_16cbf764-7044-4549-a4e6-146c6fdb35a6/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 c8331ae1a542eb033e77244b050255025a53bdff6172fe7667dd71867965088c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:09:15,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:09:15,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:09:15,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:09:15,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:09:15,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:09:15,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:09:15,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:09:15,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:09:15,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:09:15,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:09:15,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:09:15,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:09:15,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:09:15,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:09:15,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:09:15,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:09:15,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:09:15,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:09:15,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:09:15,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:09:15,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:09:15,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:09:15,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:09:15,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:09:15,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:09:15,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:09:15,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:09:15,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:09:15,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:09:15,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:09:15,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:09:15,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:09:15,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:09:15,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:09:15,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:09:15,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:09:15,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:09:15,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:09:15,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:09:15,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:09:15,261 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:09:15,325 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:09:15,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:09:15,326 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:09:15,326 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:09:15,327 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:09:15,328 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:09:15,328 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:09:15,328 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:09:15,329 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:09:15,329 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:09:15,330 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:09:15,330 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:09:15,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:09:15,333 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:09:15,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:09:15,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:09:15,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:09:15,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:09:15,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:09:15,335 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:09:15,335 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:09:15,335 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:09:15,335 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:09:15,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:09:15,336 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:09:15,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:09:15,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:09:15,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:09:15,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:09:15,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:09:15,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:09:15,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:09:15,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:09:15,339 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:09:15,340 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:09:15,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:09:15,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:09:15,341 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:09:15,341 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_16cbf764-7044-4549-a4e6-146c6fdb35a6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8331ae1a542eb033e77244b050255025a53bdff6172fe7667dd71867965088c [2021-11-23 17:09:15,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:09:15,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:09:15,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:09:15,774 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:09:15,774 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:09:15,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c [2021-11-23 17:09:15,866 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/data/d45353f4f/4c52f12f739447169b3a930a767bd9eb/FLAG71c94a8cd [2021-11-23 17:09:16,508 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:09:16,512 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c [2021-11-23 17:09:16,534 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/data/d45353f4f/4c52f12f739447169b3a930a767bd9eb/FLAG71c94a8cd [2021-11-23 17:09:16,796 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/data/d45353f4f/4c52f12f739447169b3a930a767bd9eb [2021-11-23 17:09:16,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:09:16,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:09:16,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:09:16,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:09:16,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:09:16,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:09:16" (1/1) ... [2021-11-23 17:09:16,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3687acf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:16, skipping insertion in model container [2021-11-23 17:09:16,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:09:16" (1/1) ... [2021-11-23 17:09:16,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:09:16,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:09:17,058 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_16cbf764-7044-4549-a4e6-146c6fdb35a6/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c[911,924] [2021-11-23 17:09:17,136 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_16cbf764-7044-4549-a4e6-146c6fdb35a6/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c[8416,8429] [2021-11-23 17:09:17,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:09:17,348 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:09:17,361 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_16cbf764-7044-4549-a4e6-146c6fdb35a6/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c[911,924] [2021-11-23 17:09:17,379 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_16cbf764-7044-4549-a4e6-146c6fdb35a6/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c[8416,8429] [2021-11-23 17:09:17,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:09:17,450 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:09:17,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:17 WrapperNode [2021-11-23 17:09:17,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:09:17,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:09:17,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:09:17,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:09:17,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:17" (1/1) ... [2021-11-23 17:09:17,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:17" (1/1) ... [2021-11-23 17:09:17,578 INFO L137 Inliner]: procedures = 78, calls = 94, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 982 [2021-11-23 17:09:17,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:09:17,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:09:17,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:09:17,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:09:17,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:17" (1/1) ... [2021-11-23 17:09:17,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:17" (1/1) ... [2021-11-23 17:09:17,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:17" (1/1) ... [2021-11-23 17:09:17,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:17" (1/1) ... [2021-11-23 17:09:17,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:17" (1/1) ... [2021-11-23 17:09:17,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:17" (1/1) ... [2021-11-23 17:09:17,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:17" (1/1) ... [2021-11-23 17:09:17,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:09:17,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:09:17,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:09:17,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:09:17,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:17" (1/1) ... [2021-11-23 17:09:17,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:09:17,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:09:17,758 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:09:17,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:09:17,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:09:17,810 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 17:09:17,810 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 17:09:17,810 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-11-23 17:09:17,810 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-11-23 17:09:17,811 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 17:09:17,811 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 17:09:17,811 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 17:09:17,811 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 17:09:17,811 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-11-23 17:09:17,812 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-11-23 17:09:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 17:09:17,812 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 17:09:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 17:09:17,812 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 17:09:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-11-23 17:09:17,813 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-11-23 17:09:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:09:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-11-23 17:09:17,813 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-11-23 17:09:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-11-23 17:09:17,813 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-11-23 17:09:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 17:09:17,814 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 17:09:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 17:09:17,814 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 17:09:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-11-23 17:09:17,814 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-11-23 17:09:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:09:17,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:09:17,816 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 17:09:17,816 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 17:09:18,048 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:09:18,050 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:09:18,996 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1bv32 == ~q_free~0); [2021-11-23 17:09:18,996 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1bv32 == ~q_free~0;~c_dr_st~0 := 2bv32;~c_dr_pc~0 := 2bv32;~a_t~0 := do_read_c_~a~0#1; [2021-11-23 17:09:19,129 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:09:19,159 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:09:19,159 INFO L301 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-23 17:09:19,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:09:19 BoogieIcfgContainer [2021-11-23 17:09:19,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:09:19,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:09:19,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:09:19,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:09:19,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:09:16" (1/3) ... [2021-11-23 17:09:19,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6590094f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:09:19, skipping insertion in model container [2021-11-23 17:09:19,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:17" (2/3) ... [2021-11-23 17:09:19,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6590094f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:09:19, skipping insertion in model container [2021-11-23 17:09:19,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:09:19" (3/3) ... [2021-11-23 17:09:19,189 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.11.cil-2.c [2021-11-23 17:09:19,195 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:09:19,195 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 17:09:19,244 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:09:19,251 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 17:09:19,251 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 17:09:19,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 474 states, 416 states have (on average 1.6346153846153846) internal successors, (680), 422 states have internal predecessors, (680), 41 states have call successors, (41), 14 states have call predecessors, (41), 14 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2021-11-23 17:09:19,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 17:09:19,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:09:19,314 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 17:09:19,314 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:09:19,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:09:19,320 INFO L85 PathProgramCache]: Analyzing trace with hash 805759077, now seen corresponding path program 1 times [2021-11-23 17:09:19,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:09:19,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136771346] [2021-11-23 17:09:19,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:09:19,335 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:09:19,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:09:19,340 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:09:19,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:09:19,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-23 17:09:19,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:09:19,612 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 17:09:19,616 INFO L158 Benchmark]: Toolchain (without parser) took 2813.00ms. Allocated memory was 67.1MB in the beginning and 94.4MB in the end (delta: 27.3MB). Free memory was 48.9MB in the beginning and 63.9MB in the end (delta: -15.0MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2021-11-23 17:09:19,616 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 67.1MB. Free memory was 49.6MB in the beginning and 49.5MB in the end (delta: 95.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:09:19,617 INFO L158 Benchmark]: CACSL2BoogieTranslator took 647.92ms. Allocated memory is still 67.1MB. Free memory was 48.7MB in the beginning and 36.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 17:09:19,618 INFO L158 Benchmark]: Boogie Procedure Inliner took 126.45ms. Allocated memory is still 67.1MB. Free memory was 36.9MB in the beginning and 32.4MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:09:19,618 INFO L158 Benchmark]: Boogie Preprocessor took 133.60ms. Allocated memory is still 67.1MB. Free memory was 32.4MB in the beginning and 47.6MB in the end (delta: -15.3MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2021-11-23 17:09:19,619 INFO L158 Benchmark]: RCFGBuilder took 1449.00ms. Allocated memory was 67.1MB in the beginning and 94.4MB in the end (delta: 27.3MB). Free memory was 47.6MB in the beginning and 48.1MB in the end (delta: -456.7kB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2021-11-23 17:09:19,620 INFO L158 Benchmark]: TraceAbstraction took 441.00ms. Allocated memory is still 94.4MB. Free memory was 47.6MB in the beginning and 63.9MB in the end (delta: -16.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:09:19,623 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 67.1MB. Free memory was 49.6MB in the beginning and 49.5MB in the end (delta: 95.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 647.92ms. Allocated memory is still 67.1MB. Free memory was 48.7MB in the beginning and 36.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 126.45ms. Allocated memory is still 67.1MB. Free memory was 36.9MB in the beginning and 32.4MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 133.60ms. Allocated memory is still 67.1MB. Free memory was 32.4MB in the beginning and 47.6MB in the end (delta: -15.3MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1449.00ms. Allocated memory was 67.1MB in the beginning and 94.4MB in the end (delta: 27.3MB). Free memory was 47.6MB in the beginning and 48.1MB in the end (delta: -456.7kB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. * TraceAbstraction took 441.00ms. Allocated memory is still 94.4MB. Free memory was 47.6MB in the beginning and 63.9MB in the end (delta: -16.3MB). 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 17:09:19,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16cbf764-7044-4549-a4e6-146c6fdb35a6/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 Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable