./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-complex/bounded_buffer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3a902e-1feb-4b83-aed6-d6fcb81a6451/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3a902e-1feb-4b83-aed6-d6fcb81a6451/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3a902e-1feb-4b83-aed6-d6fcb81a6451/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3a902e-1feb-4b83-aed6-d6fcb81a6451/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/bounded_buffer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3a902e-1feb-4b83-aed6-d6fcb81a6451/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3a902e-1feb-4b83-aed6-d6fcb81a6451/bin/uautomizer-ZsLfNo2U6R --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 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:30:41,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:30:41,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:30:41,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:30:41,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:30:41,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:30:41,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:30:41,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:30:41,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:30:41,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:30:41,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:30:41,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:30:41,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:30:41,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:30:41,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:30:41,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:30:41,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:30:41,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:30:41,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:30:41,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:30:41,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:30:41,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:30:41,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:30:41,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:30:41,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:30:41,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:30:41,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:30:41,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:30:41,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:30:41,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:30:41,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:30:41,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:30:41,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:30:41,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:30:41,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:30:41,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:30:41,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:30:41,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:30:41,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:30:41,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:30:41,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:30:41,843 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3a902e-1feb-4b83-aed6-d6fcb81a6451/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:30:41,868 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:30:41,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:30:41,869 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:30:41,870 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:30:41,871 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:30:41,871 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:30:41,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:30:41,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:30:41,872 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:30:41,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:30:41,873 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:30:41,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:30:41,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:30:41,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:30:41,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:30:41,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:30:41,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:30:41,875 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:30:41,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:30:41,876 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:30:41,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:30:41,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:30:41,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:30:41,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:30:41,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:30:41,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:30:41,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:30:41,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:30:41,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:30:41,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:30:41,879 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:30:41,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:30:41,879 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:30:41,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:30:41,880 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_ed3a902e-1feb-4b83-aed6-d6fcb81a6451/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3a902e-1feb-4b83-aed6-d6fcb81a6451/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 [2022-11-25 17:30:42,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:30:42,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:30:42,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:30:42,267 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:30:42,267 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:30:42,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3a902e-1feb-4b83-aed6-d6fcb81a6451/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-complex/bounded_buffer.i [2022-11-25 17:30:45,921 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:30:46,411 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:30:46,412 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3a902e-1feb-4b83-aed6-d6fcb81a6451/sv-benchmarks/c/pthread-complex/bounded_buffer.i [2022-11-25 17:30:46,439 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3a902e-1feb-4b83-aed6-d6fcb81a6451/bin/uautomizer-ZsLfNo2U6R/data/6f63c622f/c4338585c64846c386c4a98da495b988/FLAGe7c50f95d [2022-11-25 17:30:46,462 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3a902e-1feb-4b83-aed6-d6fcb81a6451/bin/uautomizer-ZsLfNo2U6R/data/6f63c622f/c4338585c64846c386c4a98da495b988 [2022-11-25 17:30:46,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:30:46,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:30:46,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:30:46,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:30:46,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:30:46,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:30:46" (1/1) ... [2022-11-25 17:30:46,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26762fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:46, skipping insertion in model container [2022-11-25 17:30:46,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:30:46" (1/1) ... [2022-11-25 17:30:46,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:30:46,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:30:47,555 WARN L237 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_ed3a902e-1feb-4b83-aed6-d6fcb81a6451/sv-benchmarks/c/pthread-complex/bounded_buffer.i[70002,70015] [2022-11-25 17:30:47,590 WARN L623 FunctionHandler]: Unknown extern function fflush [2022-11-25 17:30:47,611 WARN L623 FunctionHandler]: Unknown extern function fflush [2022-11-25 17:30:47,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:30:47,658 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:30:47,734 WARN L237 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_ed3a902e-1feb-4b83-aed6-d6fcb81a6451/sv-benchmarks/c/pthread-complex/bounded_buffer.i[70002,70015] [2022-11-25 17:30:47,744 WARN L623 FunctionHandler]: Unknown extern function fflush [2022-11-25 17:30:47,768 WARN L623 FunctionHandler]: Unknown extern function fflush [2022-11-25 17:30:47,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:30:47,925 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:30:47,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:47 WrapperNode [2022-11-25 17:30:47,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:30:47,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:30:47,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:30:47,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:30:47,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:47" (1/1) ... [2022-11-25 17:30:48,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:47" (1/1) ... [2022-11-25 17:30:48,079 INFO L138 Inliner]: procedures = 428, calls = 126, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 458 [2022-11-25 17:30:48,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:30:48,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:30:48,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:30:48,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:30:48,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:47" (1/1) ... [2022-11-25 17:30:48,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:47" (1/1) ... [2022-11-25 17:30:48,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:47" (1/1) ... [2022-11-25 17:30:48,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:47" (1/1) ... [2022-11-25 17:30:48,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:47" (1/1) ... [2022-11-25 17:30:48,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:47" (1/1) ... [2022-11-25 17:30:48,185 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:47" (1/1) ... [2022-11-25 17:30:48,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:47" (1/1) ... [2022-11-25 17:30:48,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:30:48,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:30:48,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:30:48,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:30:48,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:47" (1/1) ... [2022-11-25 17:30:48,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:30:48,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3a902e-1feb-4b83-aed6-d6fcb81a6451/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:30:48,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3a902e-1feb-4b83-aed6-d6fcb81a6451/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:30:48,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3a902e-1feb-4b83-aed6-d6fcb81a6451/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:30:48,315 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2022-11-25 17:30:48,316 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2022-11-25 17:30:48,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:30:48,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:30:48,316 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 17:30:48,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:30:48,317 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2022-11-25 17:30:48,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:30:48,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 17:30:48,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:30:48,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:30:48,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:30:48,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 17:30:48,318 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2022-11-25 17:30:48,318 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2022-11-25 17:30:48,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:30:48,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:30:48,320 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:30:48,560 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:30:48,563 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:30:49,593 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:30:49,608 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:30:49,609 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-25 17:30:49,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:30:49 BoogieIcfgContainer [2022-11-25 17:30:49,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:30:49,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:30:49,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:30:49,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:30:49,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:30:46" (1/3) ... [2022-11-25 17:30:49,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1970f933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:30:49, skipping insertion in model container [2022-11-25 17:30:49,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:47" (2/3) ... [2022-11-25 17:30:49,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1970f933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:30:49, skipping insertion in model container [2022-11-25 17:30:49,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:30:49" (3/3) ... [2022-11-25 17:30:49,625 INFO L112 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2022-11-25 17:30:49,636 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:30:49,650 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:30:49,651 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:30:49,651 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:30:49,866 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 17:30:49,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 435 places, 479 transitions, 980 flow [2022-11-25 17:30:50,463 INFO L130 PetriNetUnfolder]: 109/1033 cut-off events. [2022-11-25 17:30:50,463 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-25 17:30:50,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 1033 events. 109/1033 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6124 event pairs, 0 based on Foata normal form. 0/916 useless extension candidates. Maximal degree in co-relation 543. Up to 16 conditions per place. [2022-11-25 17:30:50,499 INFO L82 GeneralOperation]: Start removeDead. Operand has 435 places, 479 transitions, 980 flow [2022-11-25 17:30:50,522 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 435 places, 479 transitions, 980 flow [2022-11-25 17:30:50,526 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:30:50,553 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 435 places, 479 transitions, 980 flow [2022-11-25 17:30:50,563 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 435 places, 479 transitions, 980 flow [2022-11-25 17:30:50,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 435 places, 479 transitions, 980 flow [2022-11-25 17:30:50,877 INFO L130 PetriNetUnfolder]: 109/1033 cut-off events. [2022-11-25 17:30:50,877 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-25 17:30:50,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 1033 events. 109/1033 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6124 event pairs, 0 based on Foata normal form. 0/916 useless extension candidates. Maximal degree in co-relation 543. Up to 16 conditions per place. [2022-11-25 17:30:50,976 INFO L119 LiptonReduction]: Number of co-enabled transitions 106902 [2022-11-25 17:32:27,764 WARN L233 SmtUtils]: Spent 10.01s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:32:36,293 WARN L233 SmtUtils]: Spent 8.52s on a formula simplification that was a NOOP. DAG size: 166 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:32:47,662 WARN L233 SmtUtils]: Spent 11.37s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:32:57,302 WARN L233 SmtUtils]: Spent 9.64s on a formula simplification that was a NOOP. DAG size: 166 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:34:36,041 WARN L233 SmtUtils]: Spent 1.54m on a formula simplification that was a NOOP. DAG size: 271 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:35:41,609 WARN L233 SmtUtils]: Spent 1.09m on a formula simplification that was a NOOP. DAG size: 263 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:38:02,621 WARN L233 SmtUtils]: Spent 2.35m on a formula simplification. DAG size of input: 277 DAG size of output: 275 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:39:15,434 WARN L233 SmtUtils]: Spent 1.21m on a formula simplification that was a NOOP. DAG size: 266 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:39:15,574 INFO L134 LiptonReduction]: Checked pairs total: 277655 [2022-11-25 17:39:15,574 INFO L136 LiptonReduction]: Total number of compositions: 493 [2022-11-25 17:39:15,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:39:15,613 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@13389894, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:39:15,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-25 17:39:15,625 INFO L130 PetriNetUnfolder]: 6/54 cut-off events. [2022-11-25 17:39:15,626 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:39:15,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:39:15,627 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2022-11-25 17:39:15,627 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:39:15,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:15,634 INFO L85 PathProgramCache]: Analyzing trace with hash -681931379, now seen corresponding path program 1 times [2022-11-25 17:39:15,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:39:15,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543452986] [2022-11-25 17:39:15,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:15,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:39:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:39:15,934 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:39:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:39:16,057 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:39:16,059 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:39:16,061 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-11-25 17:39:16,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-11-25 17:39:16,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-25 17:39:16,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-11-25 17:39:16,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:39:16,070 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 17:39:16,073 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:39:16,075 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 17:39:16,172 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-25 17:39:16,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 665 places, 734 transitions, 1516 flow [2022-11-25 17:39:17,920 INFO L130 PetriNetUnfolder]: 384/3352 cut-off events. [2022-11-25 17:39:17,921 INFO L131 PetriNetUnfolder]: For 72/84 co-relation queries the response was YES. [2022-11-25 17:39:18,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3449 conditions, 3352 events. 384/3352 cut-off events. For 72/84 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 26958 event pairs, 2 based on Foata normal form. 0/2975 useless extension candidates. Maximal degree in co-relation 1884. Up to 64 conditions per place. [2022-11-25 17:39:18,059 INFO L82 GeneralOperation]: Start removeDead. Operand has 665 places, 734 transitions, 1516 flow [2022-11-25 17:39:18,103 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 665 places, 734 transitions, 1516 flow [2022-11-25 17:39:18,103 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:39:18,104 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 665 places, 734 transitions, 1516 flow [2022-11-25 17:39:18,104 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 665 places, 734 transitions, 1516 flow [2022-11-25 17:39:18,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 665 places, 734 transitions, 1516 flow [2022-11-25 17:39:20,150 INFO L130 PetriNetUnfolder]: 384/3352 cut-off events. [2022-11-25 17:39:20,151 INFO L131 PetriNetUnfolder]: For 72/84 co-relation queries the response was YES. [2022-11-25 17:39:20,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3449 conditions, 3352 events. 384/3352 cut-off events. For 72/84 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 26958 event pairs, 2 based on Foata normal form. 0/2975 useless extension candidates. Maximal degree in co-relation 1884. Up to 64 conditions per place. [2022-11-25 17:39:20,766 INFO L119 LiptonReduction]: Number of co-enabled transitions 342760 [2022-11-25 17:41:44,490 WARN L233 SmtUtils]: Spent 1.55m on a formula simplification. DAG size of input: 194 DAG size of output: 192 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:42:21,786 WARN L233 SmtUtils]: Spent 37.29s on a formula simplification that was a NOOP. DAG size: 190 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:43:19,214 WARN L233 SmtUtils]: Spent 57.43s on a formula simplification. DAG size of input: 194 DAG size of output: 192 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:43:54,586 WARN L233 SmtUtils]: Spent 35.37s on a formula simplification that was a NOOP. DAG size: 190 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:45:10,051 WARN L233 SmtUtils]: Spent 1.15m on a formula simplification that was a NOOP. DAG size: 273 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)