./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc31ed3-cc91-4e94-8512-062e6ce7ff88/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc31ed3-cc91-4e94-8512-062e6ce7ff88/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc31ed3-cc91-4e94-8512-062e6ce7ff88/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc31ed3-cc91-4e94-8512-062e6ce7ff88/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc31ed3-cc91-4e94-8512-062e6ce7ff88/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc31ed3-cc91-4e94-8512-062e6ce7ff88/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --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 c74d959057dcef9924c2fba34a5baac5be90cef6ad1eac335d6f9d2397fc60bb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:06:14,357 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:06:14,493 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc31ed3-cc91-4e94-8512-062e6ce7ff88/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:06:14,499 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:06:14,499 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:06:14,537 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:06:14,540 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:06:14,540 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:06:14,541 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:06:14,541 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:06:14,542 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:06:14,542 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:06:14,543 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:06:14,543 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:06:14,544 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:06:14,544 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:06:14,545 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:06:14,545 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:06:14,545 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:06:14,545 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:06:14,546 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:06:14,546 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:06:14,546 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:06:14,546 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:06:14,546 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:06:14,546 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:06:14,547 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:06:14,547 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:06:14,547 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:06:14,547 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:06:14,547 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:06:14,547 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:06:14,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:06:14,549 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:06:14,549 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:06:14,549 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:06:14,549 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:06:14,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:06:14,550 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:06:14,550 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:06:14,550 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:06:14,550 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:06:14,550 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:06:14,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:06:14,551 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:06:14,551 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:06:14,551 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:06:14,551 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:06:14,551 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_9cc31ed3-cc91-4e94-8512-062e6ce7ff88/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> c74d959057dcef9924c2fba34a5baac5be90cef6ad1eac335d6f9d2397fc60bb [2024-11-27 20:06:14,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:06:14,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:06:14,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:06:14,962 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:06:14,962 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:06:14,964 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc31ed3-cc91-4e94-8512-062e6ce7ff88/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c [2024-11-27 20:06:18,896 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc31ed3-cc91-4e94-8512-062e6ce7ff88/bin/uautomizer-verify-aQ6SnzHsRB/data/e0b4dc919/8f8be4fe258044959781eaca12742f2c/FLAG099d34db4 [2024-11-27 20:06:19,240 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:06:19,242 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc31ed3-cc91-4e94-8512-062e6ce7ff88/sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c [2024-11-27 20:06:19,254 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc31ed3-cc91-4e94-8512-062e6ce7ff88/bin/uautomizer-verify-aQ6SnzHsRB/data/e0b4dc919/8f8be4fe258044959781eaca12742f2c/FLAG099d34db4 [2024-11-27 20:06:19,276 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc31ed3-cc91-4e94-8512-062e6ce7ff88/bin/uautomizer-verify-aQ6SnzHsRB/data/e0b4dc919/8f8be4fe258044959781eaca12742f2c [2024-11-27 20:06:19,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:06:19,282 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:06:19,284 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:06:19,285 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:06:19,292 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:06:19,293 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:06:19" (1/1) ... [2024-11-27 20:06:19,295 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@181e8444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:19, skipping insertion in model container [2024-11-27 20:06:19,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:06:19" (1/1) ... [2024-11-27 20:06:19,330 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:06:19,593 WARN L250 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_9cc31ed3-cc91-4e94-8512-062e6ce7ff88/sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c[642,655] [2024-11-27 20:06:19,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:06:19,734 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:06:19,754 WARN L250 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_9cc31ed3-cc91-4e94-8512-062e6ce7ff88/sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c[642,655] [2024-11-27 20:06:19,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:06:19,872 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:06:19,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:19 WrapperNode [2024-11-27 20:06:19,875 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:06:19,876 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:06:19,877 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:06:19,877 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:06:19,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:19" (1/1) ... [2024-11-27 20:06:19,906 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:19" (1/1) ... [2024-11-27 20:06:19,956 INFO L138 Inliner]: procedures = 24, calls = 23, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 201 [2024-11-27 20:06:19,959 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:06:19,960 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:06:19,961 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:06:19,962 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:06:19,976 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:19" (1/1) ... [2024-11-27 20:06:19,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:19" (1/1) ... [2024-11-27 20:06:19,985 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:19" (1/1) ... [2024-11-27 20:06:20,015 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:06:20,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:19" (1/1) ... [2024-11-27 20:06:20,016 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:19" (1/1) ... [2024-11-27 20:06:20,022 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:19" (1/1) ... [2024-11-27 20:06:20,023 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:19" (1/1) ... [2024-11-27 20:06:20,029 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:19" (1/1) ... [2024-11-27 20:06:20,031 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:19" (1/1) ... [2024-11-27 20:06:20,033 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:19" (1/1) ... [2024-11-27 20:06:20,036 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:06:20,037 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:06:20,037 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:06:20,038 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:06:20,039 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:19" (1/1) ... [2024-11-27 20:06:20,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:06:20,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc31ed3-cc91-4e94-8512-062e6ce7ff88/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:20,103 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc31ed3-cc91-4e94-8512-062e6ce7ff88/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:06:20,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc31ed3-cc91-4e94-8512-062e6ce7ff88/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:06:20,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:06:20,166 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-27 20:06:20,167 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-27 20:06:20,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:06:20,167 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-27 20:06:20,167 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-27 20:06:20,167 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-11-27 20:06:20,167 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-11-27 20:06:20,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:06:20,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:06:20,285 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:06:20,288 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:06:20,814 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-27 20:06:20,814 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:06:20,833 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:06:20,834 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-27 20:06:20,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:06:20 BoogieIcfgContainer [2024-11-27 20:06:20,835 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:06:20,839 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:06:20,840 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:06:20,848 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:06:20,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:06:19" (1/3) ... [2024-11-27 20:06:20,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba2d6bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:06:20, skipping insertion in model container [2024-11-27 20:06:20,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:19" (2/3) ... [2024-11-27 20:06:20,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba2d6bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:06:20, skipping insertion in model container [2024-11-27 20:06:20,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:06:20" (3/3) ... [2024-11-27 20:06:20,852 INFO L128 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1.c [2024-11-27 20:06:20,876 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:06:20,878 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pc_sfifo_1.cil-1.c that has 4 procedures, 71 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-27 20:06:20,957 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:06:20,973 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3555d78c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:06:20,973 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:06:20,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 60 states have (on average 1.55) internal successors, (93), 63 states have internal predecessors, (93), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-27 20:06:20,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-27 20:06:20,988 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:20,988 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:20,989 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:20,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:20,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1339607916, now seen corresponding path program 1 times [2024-11-27 20:06:21,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:21,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042531560] [2024-11-27 20:06:21,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:21,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:06:21,173 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:06:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:06:21,253 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 20:06:21,256 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 20:06:21,257 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-27 20:06:21,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:06:21,267 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-27 20:06:21,343 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 20:06:21,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 08:06:21 BoogieIcfgContainer [2024-11-27 20:06:21,347 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 20:06:21,348 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:06:21,348 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:06:21,348 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:06:21,351 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:06:20" (3/4) ... [2024-11-27 20:06:21,352 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-27 20:06:21,462 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 16. [2024-11-27 20:06:21,554 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc31ed3-cc91-4e94-8512-062e6ce7ff88/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 20:06:21,556 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc31ed3-cc91-4e94-8512-062e6ce7ff88/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 20:06:21,557 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:06:21,558 INFO L158 Benchmark]: Toolchain (without parser) took 2276.80ms. Allocated memory is still 117.4MB. Free memory was 90.7MB in the beginning and 37.4MB in the end (delta: 53.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-11-27 20:06:21,559 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 83.9MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:06:21,560 INFO L158 Benchmark]: CACSL2BoogieTranslator took 591.32ms. Allocated memory is still 117.4MB. Free memory was 90.7MB in the beginning and 78.2MB in the end (delta: 12.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 20:06:21,560 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.25ms. Allocated memory is still 117.4MB. Free memory was 78.2MB in the beginning and 76.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:06:21,560 INFO L158 Benchmark]: Boogie Preprocessor took 75.85ms. Allocated memory is still 117.4MB. Free memory was 76.6MB in the beginning and 74.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:06:21,561 INFO L158 Benchmark]: RCFGBuilder took 797.67ms. Allocated memory is still 117.4MB. Free memory was 74.7MB in the beginning and 59.3MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 20:06:21,561 INFO L158 Benchmark]: TraceAbstraction took 507.56ms. Allocated memory is still 117.4MB. Free memory was 58.5MB in the beginning and 43.6MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 20:06:21,562 INFO L158 Benchmark]: Witness Printer took 209.09ms. Allocated memory is still 117.4MB. Free memory was 43.6MB in the beginning and 37.4MB in the end (delta: 6.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:06:21,567 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 83.9MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 591.32ms. Allocated memory is still 117.4MB. Free memory was 90.7MB in the beginning and 78.2MB in the end (delta: 12.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.25ms. Allocated memory is still 117.4MB. Free memory was 78.2MB in the beginning and 76.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 75.85ms. Allocated memory is still 117.4MB. Free memory was 76.6MB in the beginning and 74.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 797.67ms. Allocated memory is still 117.4MB. Free memory was 74.7MB in the beginning and 59.3MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 507.56ms. Allocated memory is still 117.4MB. Free memory was 58.5MB in the beginning and 43.6MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 209.09ms. Allocated memory is still 117.4MB. Free memory was 43.6MB in the beginning and 37.4MB in the end (delta: 6.2MB). 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 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int q_buf_0 ; [L25] int q_free ; [L26] int q_read_ev ; [L27] int q_write_ev ; [L28] int p_num_write ; [L29] int p_last_write ; [L30] int p_dw_st ; [L31] int p_dw_pc ; [L32] int p_dw_i ; [L33] int c_num_read ; [L34] int c_last_read ; [L35] int c_dr_st ; [L36] int c_dr_pc ; [L37] int c_dr_i ; [L144] static int a_t ; VAL [a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=0, q_read_ev=0, q_write_ev=0] [L360] int __retres1 ; [L364] CALL init_model() [L346] q_free = 1 [L347] q_write_ev = 2 [L348] q_read_ev = q_write_ev [L349] p_num_write = 0 [L350] p_dw_pc = 0 [L351] p_dw_i = 1 [L352] c_num_read = 0 [L353] c_dr_pc = 0 [L354] c_dr_i = 1 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L364] RET init_model() [L365] CALL start_simulation() [L314] int kernel_st ; [L315] int tmp ; [L319] kernel_st = 0 [L320] CALL init_threads() [L206] COND TRUE (int )p_dw_i == 1 [L207] p_dw_st = 0 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L211] COND TRUE (int )c_dr_i == 1 [L212] c_dr_st = 0 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L320] RET init_threads() [L326] kernel_st = 1 [L327] CALL eval() [L241] int tmp ; [L242] int tmp___0 ; [L243] int tmp___1 ; VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L250] CALL, EXPR exists_runnable_thread() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L221] int __retres1 ; VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L224] COND TRUE (int )p_dw_st == 0 [L225] __retres1 = 1 VAL [__retres1=1, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L237] return (__retres1); VAL [\result=1, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L250] RET, EXPR exists_runnable_thread() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L250] tmp___1 = exists_runnable_thread() [L252] COND TRUE \read(tmp___1) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L257] COND TRUE (int )p_dw_st == 0 [L259] tmp = __VERIFIER_nondet_int() [L261] COND FALSE !(\read(tmp)) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L267] CALL error() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L19] reach_error() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-27 20:06:21,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc31ed3-cc91-4e94-8512-062e6ce7ff88/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE