./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.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_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/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_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/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_fc137d1e-a5bf-43a8-96da-6517d98044fa/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 dbdff9d5cdb7ffcae57151b3d045900600728670d8aad942a459f8d05b6221fb --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:45:16,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:45:16,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:45:16,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:45:16,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:45:16,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:45:16,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:45:16,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:45:17,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:45:17,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:45:17,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:45:17,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:45:17,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:45:17,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:45:17,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:45:17,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:45:17,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:45:17,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:45:17,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:45:17,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:45:17,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:45:17,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:45:17,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:45:17,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:45:17,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:45:17,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:45:17,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:45:17,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:45:17,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:45:17,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:45:17,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:45:17,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:45:17,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:45:17,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:45:17,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:45:17,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:45:17,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:45:17,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:45:17,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:45:17,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:45:17,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:45:17,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:45:17,114 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:45:17,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:45:17,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:45:17,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:45:17,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:45:17,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:45:17,117 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:45:17,117 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:45:17,118 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:45:17,118 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:45:17,119 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:45:17,119 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:45:17,119 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:45:17,120 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:45:17,120 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:45:17,120 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:45:17,120 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:45:17,121 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:45:17,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:45:17,122 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:45:17,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:45:17,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:45:17,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:45:17,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:45:17,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:45:17,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:45:17,124 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:45:17,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:45:17,124 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:45:17,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:45:17,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:45:17,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:45:17,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:45:17,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:45:17,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:45:17,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:45:17,127 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:45:17,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:45:17,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:45:17,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:45:17,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:45:17,128 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_fc137d1e-a5bf-43a8-96da-6517d98044fa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbdff9d5cdb7ffcae57151b3d045900600728670d8aad942a459f8d05b6221fb [2021-11-23 16:45:17,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:45:17,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:45:17,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:45:17,467 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:45:17,468 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:45:17,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c [2021-11-23 16:45:17,543 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/data/c64ba6f98/d3cd41a8006246a7b80488b726f21e20/FLAGc5063d6e5 [2021-11-23 16:45:18,022 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:45:18,023 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c [2021-11-23 16:45:18,054 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/data/c64ba6f98/d3cd41a8006246a7b80488b726f21e20/FLAGc5063d6e5 [2021-11-23 16:45:18,370 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/data/c64ba6f98/d3cd41a8006246a7b80488b726f21e20 [2021-11-23 16:45:18,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:45:18,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:45:18,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:45:18,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:45:18,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:45:18,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:18" (1/1) ... [2021-11-23 16:45:18,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68d265bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:18, skipping insertion in model container [2021-11-23 16:45:18,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:18" (1/1) ... [2021-11-23 16:45:18,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:45:18,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:45:18,698 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_fc137d1e-a5bf-43a8-96da-6517d98044fa/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c[914,927] [2021-11-23 16:45:18,752 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_fc137d1e-a5bf-43a8-96da-6517d98044fa/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c[7115,7128] [2021-11-23 16:45:18,872 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:45:18,896 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:45:18,908 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_fc137d1e-a5bf-43a8-96da-6517d98044fa/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c[914,927] [2021-11-23 16:45:18,926 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_fc137d1e-a5bf-43a8-96da-6517d98044fa/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c[7115,7128] [2021-11-23 16:45:19,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:45:19,053 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:45:19,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:19 WrapperNode [2021-11-23 16:45:19,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:45:19,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:45:19,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:45:19,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:45:19,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:19" (1/1) ... [2021-11-23 16:45:19,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:19" (1/1) ... [2021-11-23 16:45:19,156 INFO L137 Inliner]: procedures = 73, calls = 87, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 924 [2021-11-23 16:45:19,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:45:19,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:45:19,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:45:19,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:45:19,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:19" (1/1) ... [2021-11-23 16:45:19,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:19" (1/1) ... [2021-11-23 16:45:19,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:19" (1/1) ... [2021-11-23 16:45:19,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:19" (1/1) ... [2021-11-23 16:45:19,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:19" (1/1) ... [2021-11-23 16:45:19,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:19" (1/1) ... [2021-11-23 16:45:19,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:19" (1/1) ... [2021-11-23 16:45:19,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:45:19,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:45:19,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:45:19,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:45:19,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:19" (1/1) ... [2021-11-23 16:45:19,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:45:19,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:45:19,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:45:19,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:45:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:45:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 16:45:19,299 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 16:45:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-11-23 16:45:19,299 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-11-23 16:45:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 16:45:19,300 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 16:45:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 16:45:19,300 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 16:45:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-11-23 16:45:19,300 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-11-23 16:45:19,301 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 16:45:19,301 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 16:45:19,301 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 16:45:19,301 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 16:45:19,301 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-11-23 16:45:19,302 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-11-23 16:45:19,302 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-11-23 16:45:19,302 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-11-23 16:45:19,302 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-11-23 16:45:19,302 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-11-23 16:45:19,303 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 16:45:19,303 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 16:45:19,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:45:19,303 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 16:45:19,303 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 16:45:19,304 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-11-23 16:45:19,304 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-11-23 16:45:19,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:45:19,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:45:19,305 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 16:45:19,305 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 16:45:19,512 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:45:19,514 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:45:20,417 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:45:20,497 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 16:45:20,507 INFO L158 Benchmark]: Toolchain (without parser) took 2128.44ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 66.6MB in the beginning and 88.3MB in the end (delta: -21.7MB). Peak memory consumption was 33.8MB. Max. memory is 16.1GB. [2021-11-23 16:45:20,509 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 98.6MB. Free memory was 53.1MB in the beginning and 53.1MB in the end (delta: 47.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:45:20,510 INFO L158 Benchmark]: CACSL2BoogieTranslator took 679.06ms. Allocated memory is still 98.6MB. Free memory was 66.4MB in the beginning and 62.6MB in the end (delta: 3.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 16:45:20,511 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.59ms. Allocated memory is still 98.6MB. Free memory was 62.6MB in the beginning and 58.2MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:45:20,512 INFO L158 Benchmark]: Boogie Preprocessor took 61.98ms. Allocated memory is still 98.6MB. Free memory was 58.2MB in the beginning and 54.3MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:45:20,514 INFO L158 Benchmark]: RCFGBuilder took 1283.67ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 54.3MB in the beginning and 88.3MB in the end (delta: -34.0MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2021-11-23 16:45:20,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 98.6MB. Free memory was 53.1MB in the beginning and 53.1MB in the end (delta: 47.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 679.06ms. Allocated memory is still 98.6MB. Free memory was 66.4MB in the beginning and 62.6MB in the end (delta: 3.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.59ms. Allocated memory is still 98.6MB. Free memory was 62.6MB in the beginning and 58.2MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.98ms. Allocated memory is still 98.6MB. Free memory was 58.2MB in the beginning and 54.3MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1283.67ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 54.3MB in the beginning and 88.3MB in the end (delta: -34.0MB). Peak memory consumption was 21.8MB. 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 16:45:20,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/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_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/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_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/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_fc137d1e-a5bf-43a8-96da-6517d98044fa/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 dbdff9d5cdb7ffcae57151b3d045900600728670d8aad942a459f8d05b6221fb --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:45:22,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:45:22,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:45:22,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:45:22,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:45:22,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:45:22,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:45:22,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:45:22,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:45:22,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:45:22,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:45:22,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:45:22,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:45:22,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:45:22,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:45:22,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:45:22,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:45:22,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:45:22,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:45:22,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:45:22,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:45:22,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:45:22,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:45:22,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:45:22,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:45:22,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:45:22,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:45:23,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:45:23,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:45:23,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:45:23,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:45:23,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:45:23,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:45:23,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:45:23,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:45:23,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:45:23,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:45:23,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:45:23,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:45:23,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:45:23,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:45:23,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:45:23,089 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:45:23,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:45:23,090 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:45:23,090 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:45:23,091 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:45:23,091 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:45:23,091 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:45:23,091 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:45:23,092 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:45:23,092 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:45:23,093 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:45:23,093 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:45:23,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:45:23,095 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:45:23,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:45:23,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:45:23,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:45:23,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:45:23,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:45:23,096 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:45:23,096 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:45:23,096 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:45:23,097 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:45:23,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:45:23,097 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:45:23,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:45:23,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:45:23,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:45:23,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:45:23,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:45:23,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:45:23,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:45:23,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:45:23,099 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:45:23,100 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:45:23,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:45:23,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:45:23,100 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:45:23,100 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_fc137d1e-a5bf-43a8-96da-6517d98044fa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbdff9d5cdb7ffcae57151b3d045900600728670d8aad942a459f8d05b6221fb [2021-11-23 16:45:23,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:45:23,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:45:23,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:45:23,491 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:45:23,491 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:45:23,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c [2021-11-23 16:45:23,563 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/data/1c91695cc/62e75934e2e24c07b9638f0410011a63/FLAGee084a395 [2021-11-23 16:45:24,214 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:45:24,215 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c [2021-11-23 16:45:24,234 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/data/1c91695cc/62e75934e2e24c07b9638f0410011a63/FLAGee084a395 [2021-11-23 16:45:24,505 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/data/1c91695cc/62e75934e2e24c07b9638f0410011a63 [2021-11-23 16:45:24,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:45:24,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:45:24,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:45:24,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:45:24,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:45:24,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:24" (1/1) ... [2021-11-23 16:45:24,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25aaee9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:24, skipping insertion in model container [2021-11-23 16:45:24,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:24" (1/1) ... [2021-11-23 16:45:24,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:45:24,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:45:24,792 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_fc137d1e-a5bf-43a8-96da-6517d98044fa/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c[914,927] [2021-11-23 16:45:24,854 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_fc137d1e-a5bf-43a8-96da-6517d98044fa/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c[7115,7128] [2021-11-23 16:45:25,006 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:45:25,040 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:45:25,054 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_fc137d1e-a5bf-43a8-96da-6517d98044fa/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c[914,927] [2021-11-23 16:45:25,099 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_fc137d1e-a5bf-43a8-96da-6517d98044fa/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c[7115,7128] [2021-11-23 16:45:25,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:45:25,199 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:45:25,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:25 WrapperNode [2021-11-23 16:45:25,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:45:25,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:45:25,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:45:25,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:45:25,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:25" (1/1) ... [2021-11-23 16:45:25,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:25" (1/1) ... [2021-11-23 16:45:25,330 INFO L137 Inliner]: procedures = 74, calls = 87, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 889 [2021-11-23 16:45:25,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:45:25,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:45:25,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:45:25,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:45:25,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:25" (1/1) ... [2021-11-23 16:45:25,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:25" (1/1) ... [2021-11-23 16:45:25,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:25" (1/1) ... [2021-11-23 16:45:25,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:25" (1/1) ... [2021-11-23 16:45:25,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:25" (1/1) ... [2021-11-23 16:45:25,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:25" (1/1) ... [2021-11-23 16:45:25,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:25" (1/1) ... [2021-11-23 16:45:25,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:45:25,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:45:25,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:45:25,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:45:25,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:25" (1/1) ... [2021-11-23 16:45:25,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:45:25,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:45:25,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:45:25,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:45:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:45:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 16:45:25,495 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 16:45:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-11-23 16:45:25,495 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-11-23 16:45:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 16:45:25,496 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 16:45:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 16:45:25,496 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 16:45:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-11-23 16:45:25,496 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-11-23 16:45:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 16:45:25,496 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 16:45:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 16:45:25,497 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 16:45:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-11-23 16:45:25,497 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-11-23 16:45:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:45:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-11-23 16:45:25,497 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-11-23 16:45:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-11-23 16:45:25,498 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-11-23 16:45:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 16:45:25,498 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 16:45:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 16:45:25,498 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 16:45:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-11-23 16:45:25,499 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-11-23 16:45:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:45:25,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:45:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 16:45:25,499 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 16:45:25,641 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:45:25,643 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:45:26,635 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:45:26,655 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:45:26,656 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-23 16:45:26,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:45:26 BoogieIcfgContainer [2021-11-23 16:45:26,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:45:26,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:45:26,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:45:26,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:45:26,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:45:24" (1/3) ... [2021-11-23 16:45:26,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ac10e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:45:26, skipping insertion in model container [2021-11-23 16:45:26,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:25" (2/3) ... [2021-11-23 16:45:26,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ac10e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:45:26, skipping insertion in model container [2021-11-23 16:45:26,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:45:26" (3/3) ... [2021-11-23 16:45:26,670 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.10.cil-2.c [2021-11-23 16:45:26,676 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:45:26,677 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 16:45:26,733 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:45:26,739 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 16:45:26,739 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 16:45:26,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 433 states, 378 states have (on average 1.6322751322751323) internal successors, (617), 384 states have internal predecessors, (617), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2021-11-23 16:45:26,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 16:45:26,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:26,794 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 16:45:26,795 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:45:26,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:26,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1844920847, now seen corresponding path program 1 times [2021-11-23 16:45:26,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:26,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099362346] [2021-11-23 16:45:26,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:26,815 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:26,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:26,818 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:26,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:45:26,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 16:45:27,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:27,093 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 16:45:27,097 INFO L158 Benchmark]: Toolchain (without parser) took 2586.49ms. Allocated memory was 73.4MB in the beginning and 96.5MB in the end (delta: 23.1MB). Free memory was 37.1MB in the beginning and 52.1MB in the end (delta: -15.0MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2021-11-23 16:45:27,098 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 73.4MB. Free memory is still 54.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:45:27,098 INFO L158 Benchmark]: CACSL2BoogieTranslator took 673.31ms. Allocated memory is still 73.4MB. Free memory was 58.6MB in the beginning and 45.9MB in the end (delta: 12.7MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2021-11-23 16:45:27,100 INFO L158 Benchmark]: Boogie Procedure Inliner took 129.75ms. Allocated memory is still 73.4MB. Free memory was 45.9MB in the beginning and 41.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:45:27,100 INFO L158 Benchmark]: Boogie Preprocessor took 70.07ms. Allocated memory is still 73.4MB. Free memory was 41.8MB in the beginning and 37.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:45:27,101 INFO L158 Benchmark]: RCFGBuilder took 1257.62ms. Allocated memory was 73.4MB in the beginning and 96.5MB in the end (delta: 23.1MB). Free memory was 37.5MB in the beginning and 64.2MB in the end (delta: -26.7MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2021-11-23 16:45:27,102 INFO L158 Benchmark]: TraceAbstraction took 433.02ms. Allocated memory is still 96.5MB. Free memory was 63.7MB in the beginning and 52.1MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 16:45:27,105 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 73.4MB. Free memory is still 54.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 673.31ms. Allocated memory is still 73.4MB. Free memory was 58.6MB in the beginning and 45.9MB in the end (delta: 12.7MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 129.75ms. Allocated memory is still 73.4MB. Free memory was 45.9MB in the beginning and 41.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.07ms. Allocated memory is still 73.4MB. Free memory was 41.8MB in the beginning and 37.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1257.62ms. Allocated memory was 73.4MB in the beginning and 96.5MB in the end (delta: 23.1MB). Free memory was 37.5MB in the beginning and 64.2MB in the end (delta: -26.7MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. * TraceAbstraction took 433.02ms. Allocated memory is still 96.5MB. Free memory was 63.7MB in the beginning and 52.1MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 16:45:27,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc137d1e-a5bf-43a8-96da-6517d98044fa/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