./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.04.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7aa7bd07197bec95559c5698226af90cd1b90ff400e8df11e207de02b1c5b2da --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:56:59,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:56:59,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:56:59,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:56:59,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:56:59,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:56:59,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:56:59,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:56:59,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:56:59,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:56:59,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:56:59,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:56:59,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:56:59,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:56:59,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:56:59,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:56:59,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:56:59,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:56:59,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:56:59,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:56:59,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:56:59,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:56:59,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:56:59,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:56:59,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:56:59,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:56:59,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:56:59,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:56:59,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:56:59,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:56:59,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:56:59,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:56:59,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:56:59,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:56:59,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:56:59,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:56:59,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:56:59,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:56:59,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:56:59,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:56:59,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:56:59,255 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 17:56:59,277 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:56:59,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:56:59,278 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:56:59,278 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:56:59,279 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:56:59,279 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:56:59,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:56:59,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:56:59,281 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:56:59,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:56:59,281 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:56:59,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:56:59,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:56:59,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:56:59,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:56:59,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:56:59,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:56:59,283 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:56:59,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:56:59,283 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:56:59,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:56:59,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:56:59,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:56:59,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:56:59,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:56:59,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:56:59,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:56:59,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:56:59,285 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:56:59,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:56:59,286 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:56:59,286 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:56:59,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:56:59,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:56:59,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7aa7bd07197bec95559c5698226af90cd1b90ff400e8df11e207de02b1c5b2da [2021-11-13 17:56:59,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:56:59,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:56:59,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:56:59,573 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:56:59,574 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:56:59,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.04.cil-1.c [2021-11-13 17:56:59,670 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/data/fdcae12fc/8a946aba9d38424f85c2e4364ddc7bf3/FLAGa7670e9ca [2021-11-13 17:57:00,161 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:57:00,162 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.04.cil-1.c [2021-11-13 17:57:00,174 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/data/fdcae12fc/8a946aba9d38424f85c2e4364ddc7bf3/FLAGa7670e9ca [2021-11-13 17:57:00,517 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/data/fdcae12fc/8a946aba9d38424f85c2e4364ddc7bf3 [2021-11-13 17:57:00,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:57:00,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:57:00,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:57:00,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:57:00,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:57:00,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:57:00" (1/1) ... [2021-11-13 17:57:00,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd2b8b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:00, skipping insertion in model container [2021-11-13 17:57:00,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:57:00" (1/1) ... [2021-11-13 17:57:00,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:57:00,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:57:00,772 WARN L228 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_f1261737-e3f5-40ef-92f3-83722d895518/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.04.cil-1.c[913,926] [2021-11-13 17:57:00,813 WARN L228 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_f1261737-e3f5-40ef-92f3-83722d895518/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.04.cil-1.c[5994,6007] [2021-11-13 17:57:00,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:57:00,876 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:57:00,888 WARN L228 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_f1261737-e3f5-40ef-92f3-83722d895518/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.04.cil-1.c[913,926] [2021-11-13 17:57:00,904 WARN L228 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_f1261737-e3f5-40ef-92f3-83722d895518/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.04.cil-1.c[5994,6007] [2021-11-13 17:57:00,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:57:00,991 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:57:00,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:00 WrapperNode [2021-11-13 17:57:00,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:57:00,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:57:00,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:57:00,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:57:01,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:00" (1/1) ... [2021-11-13 17:57:01,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:00" (1/1) ... [2021-11-13 17:57:01,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:57:01,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:57:01,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:57:01,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:57:01,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:00" (1/1) ... [2021-11-13 17:57:01,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:00" (1/1) ... [2021-11-13 17:57:01,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:00" (1/1) ... [2021-11-13 17:57:01,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:00" (1/1) ... [2021-11-13 17:57:01,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:00" (1/1) ... [2021-11-13 17:57:01,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:00" (1/1) ... [2021-11-13 17:57:01,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:00" (1/1) ... [2021-11-13 17:57:01,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:57:01,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:57:01,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:57:01,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:57:01,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:00" (1/1) ... [2021-11-13 17:57:01,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:57:01,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:57:01,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:57:01,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:57:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:57:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-13 17:57:01,237 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-13 17:57:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2021-11-13 17:57:01,238 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2021-11-13 17:57:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-13 17:57:01,238 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-13 17:57:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-13 17:57:01,239 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-13 17:57:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-13 17:57:01,239 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-13 17:57:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-13 17:57:01,239 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-13 17:57:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-13 17:57:01,240 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-13 17:57:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:57:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-13 17:57:01,241 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-13 17:57:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:57:01,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:57:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-13 17:57:01,241 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-13 17:57:02,102 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:57:02,102 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-13 17:57:02,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:57:02 BoogieIcfgContainer [2021-11-13 17:57:02,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:57:02,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:57:02,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:57:02,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:57:02,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:57:00" (1/3) ... [2021-11-13 17:57:02,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3c7c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:57:02, skipping insertion in model container [2021-11-13 17:57:02,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:00" (2/3) ... [2021-11-13 17:57:02,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3c7c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:57:02, skipping insertion in model container [2021-11-13 17:57:02,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:57:02" (3/3) ... [2021-11-13 17:57:02,122 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1+token_ring.04.cil-1.c [2021-11-13 17:57:02,136 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:57:02,136 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 17:57:02,208 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:57:02,215 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=PETRI_NET, 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 [2021-11-13 17:57:02,215 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-13 17:57:02,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 218 states have (on average 1.5963302752293578) internal successors, (348), 224 states have internal predecessors, (348), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-13 17:57:02,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 17:57:02,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:57:02,252 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] [2021-11-13 17:57:02,252 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:57:02,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:57:02,257 INFO L85 PathProgramCache]: Analyzing trace with hash 310849250, now seen corresponding path program 1 times [2021-11-13 17:57:02,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:57:02,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375140903] [2021-11-13 17:57:02,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:57:02,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:57:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:57:02,384 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:57:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:57:02,462 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 17:57:02,465 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 17:57:02,466 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-13 17:57:02,468 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-13 17:57:02,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:57:02,474 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-13 17:57:02,478 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:57:02,521 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) 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) [2021-11-13 17:57:02,525 INFO L158 Benchmark]: Toolchain (without parser) took 2003.10ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 62.3MB in the beginning and 78.0MB in the end (delta: -15.7MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2021-11-13 17:57:02,526 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 100.7MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:57:02,527 INFO L158 Benchmark]: CACSL2BoogieTranslator took 470.49ms. Allocated memory is still 100.7MB. Free memory was 62.1MB in the beginning and 69.1MB in the end (delta: -7.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 17:57:02,528 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.39ms. Allocated memory is still 100.7MB. Free memory was 69.1MB in the beginning and 65.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 17:57:02,529 INFO L158 Benchmark]: Boogie Preprocessor took 69.35ms. Allocated memory is still 100.7MB. Free memory was 65.7MB in the beginning and 63.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 17:57:02,535 INFO L158 Benchmark]: RCFGBuilder took 967.69ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 63.0MB in the beginning and 96.9MB in the end (delta: -33.9MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2021-11-13 17:57:02,535 INFO L158 Benchmark]: TraceAbstraction took 408.78ms. Allocated memory is still 123.7MB. Free memory was 96.1MB in the beginning and 78.0MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-13 17:57:02,541 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 100.7MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 470.49ms. Allocated memory is still 100.7MB. Free memory was 62.1MB in the beginning and 69.1MB in the end (delta: -7.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.39ms. Allocated memory is still 100.7MB. Free memory was 69.1MB in the beginning and 65.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.35ms. Allocated memory is still 100.7MB. Free memory was 65.7MB in the beginning and 63.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 967.69ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 63.0MB in the beginning and 96.9MB in the end (delta: -33.9MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. * TraceAbstraction took 408.78ms. Allocated memory is still 123.7MB. Free memory was 96.1MB in the beginning and 78.0MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 17:57:02,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/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_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.04.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7aa7bd07197bec95559c5698226af90cd1b90ff400e8df11e207de02b1c5b2da --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:57:04,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:57:04,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:57:05,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:57:05,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:57:05,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:57:05,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:57:05,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:57:05,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:57:05,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:57:05,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:57:05,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:57:05,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:57:05,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:57:05,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:57:05,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:57:05,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:57:05,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:57:05,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:57:05,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:57:05,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:57:05,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:57:05,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:57:05,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:57:05,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:57:05,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:57:05,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:57:05,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:57:05,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:57:05,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:57:05,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:57:05,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:57:05,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:57:05,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:57:05,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:57:05,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:57:05,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:57:05,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:57:05,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:57:05,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:57:05,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:57:05,106 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-13 17:57:05,156 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:57:05,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:57:05,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:57:05,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:57:05,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:57:05,158 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:57:05,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:57:05,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:57:05,160 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:57:05,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:57:05,161 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:57:05,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:57:05,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:57:05,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:57:05,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:57:05,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:57:05,163 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 17:57:05,163 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 17:57:05,163 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:57:05,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:57:05,163 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:57:05,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:57:05,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:57:05,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:57:05,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:57:05,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:57:05,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:57:05,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:57:05,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:57:05,166 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 17:57:05,166 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 17:57:05,166 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:57:05,166 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:57:05,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:57:05,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:57:05,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 17:57:05,167 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_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7aa7bd07197bec95559c5698226af90cd1b90ff400e8df11e207de02b1c5b2da [2021-11-13 17:57:05,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:57:05,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:57:05,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:57:05,618 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:57:05,618 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:57:05,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.04.cil-1.c [2021-11-13 17:57:05,700 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/data/d519d64ad/7a0a4c0ca8d040418f60d41be268dd57/FLAG80a5f8171 [2021-11-13 17:57:06,287 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:57:06,288 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.04.cil-1.c [2021-11-13 17:57:06,300 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/data/d519d64ad/7a0a4c0ca8d040418f60d41be268dd57/FLAG80a5f8171 [2021-11-13 17:57:06,614 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/data/d519d64ad/7a0a4c0ca8d040418f60d41be268dd57 [2021-11-13 17:57:06,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:57:06,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:57:06,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:57:06,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:57:06,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:57:06,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:57:06" (1/1) ... [2021-11-13 17:57:06,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1063f16c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:06, skipping insertion in model container [2021-11-13 17:57:06,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:57:06" (1/1) ... [2021-11-13 17:57:06,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:57:06,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:57:06,824 WARN L228 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_f1261737-e3f5-40ef-92f3-83722d895518/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.04.cil-1.c[913,926] [2021-11-13 17:57:06,872 WARN L228 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_f1261737-e3f5-40ef-92f3-83722d895518/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.04.cil-1.c[5994,6007] [2021-11-13 17:57:06,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:57:07,024 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:57:07,039 WARN L228 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_f1261737-e3f5-40ef-92f3-83722d895518/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.04.cil-1.c[913,926] [2021-11-13 17:57:07,087 WARN L228 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_f1261737-e3f5-40ef-92f3-83722d895518/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.04.cil-1.c[5994,6007] [2021-11-13 17:57:07,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:57:07,138 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:57:07,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:07 WrapperNode [2021-11-13 17:57:07,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:57:07,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:57:07,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:57:07,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:57:07,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:07" (1/1) ... [2021-11-13 17:57:07,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:07" (1/1) ... [2021-11-13 17:57:07,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:57:07,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:57:07,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:57:07,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:57:07,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:07" (1/1) ... [2021-11-13 17:57:07,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:07" (1/1) ... [2021-11-13 17:57:07,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:07" (1/1) ... [2021-11-13 17:57:07,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:07" (1/1) ... [2021-11-13 17:57:07,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:07" (1/1) ... [2021-11-13 17:57:07,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:07" (1/1) ... [2021-11-13 17:57:07,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:07" (1/1) ... [2021-11-13 17:57:07,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:57:07,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:57:07,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:57:07,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:57:07,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:07" (1/1) ... [2021-11-13 17:57:07,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:57:07,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:57:07,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:57:07,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:57:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:57:07,377 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-13 17:57:07,378 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-13 17:57:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2021-11-13 17:57:07,379 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2021-11-13 17:57:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-13 17:57:07,380 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-13 17:57:07,380 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-13 17:57:07,380 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-13 17:57:07,380 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-13 17:57:07,380 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-13 17:57:07,380 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-13 17:57:07,381 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-13 17:57:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 17:57:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-13 17:57:07,381 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-13 17:57:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-13 17:57:07,381 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-13 17:57:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:57:07,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:57:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-13 17:57:07,382 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-13 17:57:08,221 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:57:08,222 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-13 17:57:08,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:57:08 BoogieIcfgContainer [2021-11-13 17:57:08,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:57:08,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:57:08,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:57:08,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:57:08,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:57:06" (1/3) ... [2021-11-13 17:57:08,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b89fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:57:08, skipping insertion in model container [2021-11-13 17:57:08,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:07" (2/3) ... [2021-11-13 17:57:08,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b89fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:57:08, skipping insertion in model container [2021-11-13 17:57:08,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:57:08" (3/3) ... [2021-11-13 17:57:08,232 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1+token_ring.04.cil-1.c [2021-11-13 17:57:08,237 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:57:08,237 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 17:57:08,305 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:57:08,312 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=PETRI_NET, 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 [2021-11-13 17:57:08,313 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-13 17:57:08,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 218 states have (on average 1.5963302752293578) internal successors, (348), 224 states have internal predecessors, (348), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-13 17:57:08,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 17:57:08,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:57:08,353 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] [2021-11-13 17:57:08,353 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:57:08,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:57:08,368 INFO L85 PathProgramCache]: Analyzing trace with hash 310849250, now seen corresponding path program 1 times [2021-11-13 17:57:08,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:57:08,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573163784] [2021-11-13 17:57:08,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:57:08,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:57:08,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:57:08,389 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:57:08,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 17:57:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:57:08,493 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:57:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:57:08,589 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-13 17:57:08,591 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 17:57:08,592 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-13 17:57:08,594 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-13 17:57:08,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:57:08,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:57:08,811 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-13 17:57:08,814 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:57:08,843 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) 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) [2021-11-13 17:57:08,846 INFO L158 Benchmark]: Toolchain (without parser) took 2227.61ms. Allocated memory was 54.5MB in the beginning and 75.5MB in the end (delta: 21.0MB). Free memory was 32.1MB in the beginning and 37.7MB in the end (delta: -5.5MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2021-11-13 17:57:08,846 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory was 35.8MB in the beginning and 35.8MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:57:08,847 INFO L158 Benchmark]: CACSL2BoogieTranslator took 519.92ms. Allocated memory was 54.5MB in the beginning and 75.5MB in the end (delta: 21.0MB). Free memory was 31.9MB in the beginning and 53.6MB in the end (delta: -21.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 17:57:08,848 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.88ms. Allocated memory is still 75.5MB. Free memory was 53.6MB in the beginning and 50.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 17:57:08,849 INFO L158 Benchmark]: Boogie Preprocessor took 58.67ms. Allocated memory is still 75.5MB. Free memory was 50.5MB in the beginning and 47.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 17:57:08,849 INFO L158 Benchmark]: RCFGBuilder took 965.25ms. Allocated memory is still 75.5MB. Free memory was 47.4MB in the beginning and 37.9MB in the end (delta: 9.5MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2021-11-13 17:57:08,850 INFO L158 Benchmark]: TraceAbstraction took 618.75ms. Allocated memory is still 75.5MB. Free memory was 37.3MB in the beginning and 37.7MB in the end (delta: -312.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:57:08,854 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory was 35.8MB in the beginning and 35.8MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 519.92ms. Allocated memory was 54.5MB in the beginning and 75.5MB in the end (delta: 21.0MB). Free memory was 31.9MB in the beginning and 53.6MB in the end (delta: -21.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.88ms. Allocated memory is still 75.5MB. Free memory was 53.6MB in the beginning and 50.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.67ms. Allocated memory is still 75.5MB. Free memory was 50.5MB in the beginning and 47.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 965.25ms. Allocated memory is still 75.5MB. Free memory was 47.4MB in the beginning and 37.9MB in the end (delta: 9.5MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * TraceAbstraction took 618.75ms. Allocated memory is still 75.5MB. Free memory was 37.3MB in the beginning and 37.7MB in the end (delta: -312.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 17:57:08,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1261737-e3f5-40ef-92f3-83722d895518/bin/uautomizer-YU5uOKAj3y/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: NullPointerException: null