./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ef7fbb-190e-40c2-9aea-040fffde38ce/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ef7fbb-190e-40c2-9aea-040fffde38ce/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ef7fbb-190e-40c2-9aea-040fffde38ce/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ef7fbb-190e-40c2-9aea-040fffde38ce/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/bounded_buffer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ef7fbb-190e-40c2-9aea-040fffde38ce/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ef7fbb-190e-40c2-9aea-040fffde38ce/bin/uautomizer-Dbtcem3rbc --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-5e519f3 [2022-11-02 20:36:49,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:36:49,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:36:49,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:36:49,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:36:49,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:36:49,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:36:49,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:36:49,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:36:49,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:36:49,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:36:49,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:36:49,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:36:49,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:36:49,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:36:49,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:36:49,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:36:49,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:36:49,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:36:49,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:36:49,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:36:49,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:36:49,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:36:49,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:36:49,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:36:49,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:36:49,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:36:49,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:36:49,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:36:49,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:36:49,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:36:49,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:36:49,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:36:49,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:36:49,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:36:49,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:36:49,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:36:49,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:36:49,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:36:49,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:36:49,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:36:49,384 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ef7fbb-190e-40c2-9aea-040fffde38ce/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:36:49,432 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:36:49,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:36:49,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:36:49,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:36:49,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:36:49,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:36:49,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:36:49,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:36:49,435 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:36:49,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:36:49,436 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:36:49,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:36:49,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:36:49,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:36:49,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:36:49,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:36:49,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:36:49,439 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:36:49,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:36:49,439 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:36:49,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:36:49,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:36:49,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:36:49,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:36:49,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:36:49,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:36:49,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:36:49,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:36:49,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:36:49,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:36:49,443 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:36:49,443 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:36:49,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:36:49,444 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_53ef7fbb-190e-40c2-9aea-040fffde38ce/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ef7fbb-190e-40c2-9aea-040fffde38ce/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 [2022-11-02 20:36:49,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:36:49,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:36:49,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:36:49,762 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:36:49,763 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:36:49,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ef7fbb-190e-40c2-9aea-040fffde38ce/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-complex/bounded_buffer.i [2022-11-02 20:36:49,846 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ef7fbb-190e-40c2-9aea-040fffde38ce/bin/uautomizer-Dbtcem3rbc/data/8a4d9740c/684cad947aab45188e07c470b898118e/FLAG5f4e3d7e6 [2022-11-02 20:36:50,560 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:36:50,565 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ef7fbb-190e-40c2-9aea-040fffde38ce/sv-benchmarks/c/pthread-complex/bounded_buffer.i [2022-11-02 20:36:50,600 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ef7fbb-190e-40c2-9aea-040fffde38ce/bin/uautomizer-Dbtcem3rbc/data/8a4d9740c/684cad947aab45188e07c470b898118e/FLAG5f4e3d7e6 [2022-11-02 20:36:50,747 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ef7fbb-190e-40c2-9aea-040fffde38ce/bin/uautomizer-Dbtcem3rbc/data/8a4d9740c/684cad947aab45188e07c470b898118e [2022-11-02 20:36:50,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:36:50,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:36:50,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:36:50,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:36:50,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:36:50,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:36:50" (1/1) ... [2022-11-02 20:36:50,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16994d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:50, skipping insertion in model container [2022-11-02 20:36:50,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:36:50" (1/1) ... [2022-11-02 20:36:50,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:36:50,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:36:51,768 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ef7fbb-190e-40c2-9aea-040fffde38ce/sv-benchmarks/c/pthread-complex/bounded_buffer.i[70002,70015] [2022-11-02 20:36:51,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:36:51,843 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:36:51,939 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ef7fbb-190e-40c2-9aea-040fffde38ce/sv-benchmarks/c/pthread-complex/bounded_buffer.i[70002,70015] [2022-11-02 20:36:51,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:36:52,098 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:36:52,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:52 WrapperNode [2022-11-02 20:36:52,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:36:52,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:36:52,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:36:52,101 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:36:52,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:52" (1/1) ... [2022-11-02 20:36:52,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:52" (1/1) ... [2022-11-02 20:36:52,222 INFO L138 Inliner]: procedures = 428, calls = 126, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 478 [2022-11-02 20:36:52,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:36:52,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:36:52,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:36:52,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:36:52,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:52" (1/1) ... [2022-11-02 20:36:52,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:52" (1/1) ... [2022-11-02 20:36:52,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:52" (1/1) ... [2022-11-02 20:36:52,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:52" (1/1) ... [2022-11-02 20:36:52,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:52" (1/1) ... [2022-11-02 20:36:52,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:52" (1/1) ... [2022-11-02 20:36:52,321 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:52" (1/1) ... [2022-11-02 20:36:52,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:52" (1/1) ... [2022-11-02 20:36:52,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:36:52,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:36:52,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:36:52,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:36:52,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:52" (1/1) ... [2022-11-02 20:36:52,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:36:52,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ef7fbb-190e-40c2-9aea-040fffde38ce/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:36:52,378 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ef7fbb-190e-40c2-9aea-040fffde38ce/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:36:52,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ef7fbb-190e-40c2-9aea-040fffde38ce/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:36:52,436 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2022-11-02 20:36:52,436 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2022-11-02 20:36:52,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:36:52,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:36:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:36:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:36:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2022-11-02 20:36:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:36:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:36:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:36:52,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:36:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:36:52,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:36:52,439 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2022-11-02 20:36:52,439 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2022-11-02 20:36:52,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:36:52,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:36:52,441 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:36:52,621 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:36:52,624 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:36:53,500 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:36:53,519 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:36:53,521 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-02 20:36:53,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:36:53 BoogieIcfgContainer [2022-11-02 20:36:53,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:36:53,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:36:53,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:36:53,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:36:53,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:36:50" (1/3) ... [2022-11-02 20:36:53,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e33ca1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:36:53, skipping insertion in model container [2022-11-02 20:36:53,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:52" (2/3) ... [2022-11-02 20:36:53,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e33ca1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:36:53, skipping insertion in model container [2022-11-02 20:36:53,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:36:53" (3/3) ... [2022-11-02 20:36:53,534 INFO L112 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2022-11-02 20:36:53,549 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:36:53,560 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:36:53,561 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:36:53,561 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:36:53,736 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-02 20:36:53,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 455 places, 504 transitions, 1030 flow [2022-11-02 20:36:54,333 INFO L130 PetriNetUnfolder]: 122/1098 cut-off events. [2022-11-02 20:36:54,334 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-02 20:36:54,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1118 conditions, 1098 events. 122/1098 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6673 event pairs, 0 based on Foata normal form. 0/968 useless extension candidates. Maximal degree in co-relation 578. Up to 16 conditions per place. [2022-11-02 20:36:54,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 455 places, 504 transitions, 1030 flow [2022-11-02 20:36:54,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 455 places, 504 transitions, 1030 flow [2022-11-02 20:36:54,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:36:54,414 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;@7fb6d89d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:36:54,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:36:54,441 INFO L130 PetriNetUnfolder]: 19/190 cut-off events. [2022-11-02 20:36:54,442 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:36:54,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:36:54,444 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:54,444 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)] === [2022-11-02 20:36:54,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:54,451 INFO L85 PathProgramCache]: Analyzing trace with hash 13293357, now seen corresponding path program 1 times [2022-11-02 20:36:54,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:54,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367290151] [2022-11-02 20:36:54,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:54,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:55,122 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:36:55,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:55,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367290151] [2022-11-02 20:36:55,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367290151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:55,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:55,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:36:55,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200885350] [2022-11-02 20:36:55,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:55,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:36:55,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:55,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:36:55,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:36:55,202 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 461 out of 504 [2022-11-02 20:36:55,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 504 transitions, 1030 flow. Second operand has 5 states, 5 states have (on average 462.6) internal successors, (2313), 5 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:55,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:36:55,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 461 of 504 [2022-11-02 20:36:55,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:36:55,662 INFO L130 PetriNetUnfolder]: 87/1060 cut-off events. [2022-11-02 20:36:55,662 INFO L131 PetriNetUnfolder]: For 33/49 co-relation queries the response was YES. [2022-11-02 20:36:55,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 1060 events. 87/1060 cut-off events. For 33/49 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 6500 event pairs, 0 based on Foata normal form. 63/1028 useless extension candidates. Maximal degree in co-relation 571. Up to 39 conditions per place. [2022-11-02 20:36:55,698 INFO L137 encePairwiseOnDemand]: 487/504 looper letters, 25 selfloop transitions, 4 changer transitions 0/489 dead transitions. [2022-11-02 20:36:55,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 489 transitions, 1058 flow [2022-11-02 20:36:55,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:36:55,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:36:55,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2352 transitions. [2022-11-02 20:36:55,724 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-11-02 20:36:55,725 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2352 transitions. [2022-11-02 20:36:55,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2352 transitions. [2022-11-02 20:36:55,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:36:55,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2352 transitions. [2022-11-02 20:36:55,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 470.4) internal successors, (2352), 5 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:55,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 504.0) internal successors, (3024), 6 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:55,756 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 504.0) internal successors, (3024), 6 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:55,758 INFO L175 Difference]: Start difference. First operand has 455 places, 504 transitions, 1030 flow. Second operand 5 states and 2352 transitions. [2022-11-02 20:36:55,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 489 transitions, 1058 flow [2022-11-02 20:36:55,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 489 transitions, 1058 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:36:55,780 INFO L231 Difference]: Finished difference. Result has 457 places, 489 transitions, 1008 flow [2022-11-02 20:36:55,783 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1008, PETRI_PLACES=457, PETRI_TRANSITIONS=489} [2022-11-02 20:36:55,787 INFO L287 CegarLoopForPetriNet]: 455 programPoint places, 2 predicate places. [2022-11-02 20:36:55,787 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 489 transitions, 1008 flow [2022-11-02 20:36:55,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 462.6) internal successors, (2313), 5 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:55,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:36:55,789 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:55,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:36:55,790 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:36:55,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:55,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1703216025, now seen corresponding path program 1 times [2022-11-02 20:36:55,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:55,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547475865] [2022-11-02 20:36:55,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:55,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:55,939 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:36:55,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:55,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547475865] [2022-11-02 20:36:55,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547475865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:55,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:55,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:36:55,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236403558] [2022-11-02 20:36:55,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:55,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:36:55,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:55,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:36:55,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:36:55,947 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 471 out of 504 [2022-11-02 20:36:55,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 489 transitions, 1008 flow. Second operand has 3 states, 3 states have (on average 473.0) internal successors, (1419), 3 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:55,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:36:55,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 471 of 504 [2022-11-02 20:36:55,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:36:56,273 INFO L130 PetriNetUnfolder]: 84/1054 cut-off events. [2022-11-02 20:36:56,274 INFO L131 PetriNetUnfolder]: For 33/37 co-relation queries the response was YES. [2022-11-02 20:36:56,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1102 conditions, 1054 events. 84/1054 cut-off events. For 33/37 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 6394 event pairs, 0 based on Foata normal form. 0/962 useless extension candidates. Maximal degree in co-relation 1052. Up to 18 conditions per place. [2022-11-02 20:36:56,302 INFO L137 encePairwiseOnDemand]: 500/504 looper letters, 13 selfloop transitions, 1 changer transitions 0/483 dead transitions. [2022-11-02 20:36:56,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 483 transitions, 1024 flow [2022-11-02 20:36:56,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:36:56,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:36:56,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1430 transitions. [2022-11-02 20:36:56,306 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9457671957671958 [2022-11-02 20:36:56,306 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1430 transitions. [2022-11-02 20:36:56,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1430 transitions. [2022-11-02 20:36:56,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:36:56,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1430 transitions. [2022-11-02 20:36:56,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 476.6666666666667) internal successors, (1430), 3 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:56,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:56,316 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:56,316 INFO L175 Difference]: Start difference. First operand has 457 places, 489 transitions, 1008 flow. Second operand 3 states and 1430 transitions. [2022-11-02 20:36:56,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 483 transitions, 1024 flow [2022-11-02 20:36:56,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 483 transitions, 1016 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:36:56,328 INFO L231 Difference]: Finished difference. Result has 452 places, 483 transitions, 990 flow [2022-11-02 20:36:56,329 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=990, PETRI_PLACES=452, PETRI_TRANSITIONS=483} [2022-11-02 20:36:56,330 INFO L287 CegarLoopForPetriNet]: 455 programPoint places, -3 predicate places. [2022-11-02 20:36:56,330 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 483 transitions, 990 flow [2022-11-02 20:36:56,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 473.0) internal successors, (1419), 3 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:56,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:36:56,331 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:56,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:36:56,332 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:36:56,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:56,333 INFO L85 PathProgramCache]: Analyzing trace with hash 688471773, now seen corresponding path program 1 times [2022-11-02 20:36:56,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:56,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124528273] [2022-11-02 20:36:56,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:56,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:36:56,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:56,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124528273] [2022-11-02 20:36:56,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124528273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:56,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:56,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:36:56,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078115248] [2022-11-02 20:36:56,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:56,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:36:56,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:56,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:36:56,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:36:56,711 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 504 [2022-11-02 20:36:56,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 483 transitions, 990 flow. Second operand has 5 states, 5 states have (on average 438.8) internal successors, (2194), 5 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:56,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:36:56,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 504 [2022-11-02 20:36:56,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:37:00,622 INFO L130 PetriNetUnfolder]: 2919/15709 cut-off events. [2022-11-02 20:37:00,622 INFO L131 PetriNetUnfolder]: For 140/228 co-relation queries the response was YES. [2022-11-02 20:37:00,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18791 conditions, 15709 events. 2919/15709 cut-off events. For 140/228 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 182828 event pairs, 1464 based on Foata normal form. 0/14009 useless extension candidates. Maximal degree in co-relation 18760. Up to 2942 conditions per place. [2022-11-02 20:37:00,845 INFO L137 encePairwiseOnDemand]: 496/504 looper letters, 49 selfloop transitions, 6 changer transitions 1/483 dead transitions. [2022-11-02 20:37:00,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 483 transitions, 1102 flow [2022-11-02 20:37:00,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:37:00,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:37:00,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2232 transitions. [2022-11-02 20:37:00,852 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8857142857142857 [2022-11-02 20:37:00,852 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2232 transitions. [2022-11-02 20:37:00,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2232 transitions. [2022-11-02 20:37:00,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:37:00,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2232 transitions. [2022-11-02 20:37:00,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 446.4) internal successors, (2232), 5 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:00,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 504.0) internal successors, (3024), 6 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:00,869 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 504.0) internal successors, (3024), 6 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:00,869 INFO L175 Difference]: Start difference. First operand has 452 places, 483 transitions, 990 flow. Second operand 5 states and 2232 transitions. [2022-11-02 20:37:00,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 483 transitions, 1102 flow [2022-11-02 20:37:00,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 483 transitions, 1101 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:37:00,882 INFO L231 Difference]: Finished difference. Result has 454 places, 482 transitions, 1010 flow [2022-11-02 20:37:00,883 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1010, PETRI_PLACES=454, PETRI_TRANSITIONS=482} [2022-11-02 20:37:00,884 INFO L287 CegarLoopForPetriNet]: 455 programPoint places, -1 predicate places. [2022-11-02 20:37:00,885 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 482 transitions, 1010 flow [2022-11-02 20:37:00,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 438.8) internal successors, (2194), 5 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:00,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:37:00,887 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:00,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:37:00,888 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:37:00,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:00,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1704620567, now seen corresponding path program 1 times [2022-11-02 20:37:00,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:00,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682881264] [2022-11-02 20:37:00,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:00,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:37:00,957 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:37:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:37:01,024 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:37:01,024 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:37:01,025 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-11-02 20:37:01,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-11-02 20:37:01,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-02 20:37:01,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-11-02 20:37:01,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:37:01,029 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-02 20:37:01,032 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:37:01,032 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:37:01,180 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-02 20:37:01,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 697 places, 774 transitions, 1596 flow [2022-11-02 20:37:02,814 INFO L130 PetriNetUnfolder]: 430/3582 cut-off events. [2022-11-02 20:37:02,814 INFO L131 PetriNetUnfolder]: For 72/84 co-relation queries the response was YES. [2022-11-02 20:37:02,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3679 conditions, 3582 events. 430/3582 cut-off events. For 72/84 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 29312 event pairs, 2 based on Foata normal form. 0/3159 useless extension candidates. Maximal degree in co-relation 2004. Up to 64 conditions per place. [2022-11-02 20:37:02,912 INFO L82 GeneralOperation]: Start removeDead. Operand has 697 places, 774 transitions, 1596 flow [2022-11-02 20:37:02,960 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 697 places, 774 transitions, 1596 flow [2022-11-02 20:37:02,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:37:02,963 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;@7fb6d89d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:37:02,963 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:37:03,002 INFO L130 PetriNetUnfolder]: 39/416 cut-off events. [2022-11-02 20:37:03,002 INFO L131 PetriNetUnfolder]: For 11/13 co-relation queries the response was YES. [2022-11-02 20:37:03,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:37:03,003 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:03,003 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 2 more)] === [2022-11-02 20:37:03,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:03,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1094861806, now seen corresponding path program 1 times [2022-11-02 20:37:03,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:03,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481187312] [2022-11-02 20:37:03,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:03,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:03,117 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-02 20:37:03,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:03,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481187312] [2022-11-02 20:37:03,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481187312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:03,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:37:03,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:37:03,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783010660] [2022-11-02 20:37:03,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:03,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:37:03,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:03,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:37:03,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:37:03,133 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 719 out of 774 [2022-11-02 20:37:03,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 774 transitions, 1596 flow. Second operand has 5 states, 5 states have (on average 720.8) internal successors, (3604), 5 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:03,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:37:03,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 719 of 774 [2022-11-02 20:37:03,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:37:04,756 INFO L130 PetriNetUnfolder]: 315/3460 cut-off events. [2022-11-02 20:37:04,756 INFO L131 PetriNetUnfolder]: For 230/287 co-relation queries the response was YES. [2022-11-02 20:37:04,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3708 conditions, 3460 events. 315/3460 cut-off events. For 230/287 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 28788 event pairs, 1 based on Foata normal form. 411/3563 useless extension candidates. Maximal degree in co-relation 2017. Up to 130 conditions per place. [2022-11-02 20:37:04,961 INFO L137 encePairwiseOnDemand]: 752/774 looper letters, 31 selfloop transitions, 4 changer transitions 0/753 dead transitions. [2022-11-02 20:37:04,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 753 transitions, 1624 flow [2022-11-02 20:37:04,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:37:04,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:37:04,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3658 transitions. [2022-11-02 20:37:04,976 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.945219638242894 [2022-11-02 20:37:04,976 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3658 transitions. [2022-11-02 20:37:04,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3658 transitions. [2022-11-02 20:37:04,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:37:04,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3658 transitions. [2022-11-02 20:37:04,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 731.6) internal successors, (3658), 5 states have internal predecessors, (3658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:05,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 774.0) internal successors, (4644), 6 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:05,003 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 774.0) internal successors, (4644), 6 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:05,004 INFO L175 Difference]: Start difference. First operand has 697 places, 774 transitions, 1596 flow. Second operand 5 states and 3658 transitions. [2022-11-02 20:37:05,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 698 places, 753 transitions, 1624 flow [2022-11-02 20:37:05,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 698 places, 753 transitions, 1624 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:37:05,023 INFO L231 Difference]: Finished difference. Result has 698 places, 753 transitions, 1562 flow [2022-11-02 20:37:05,025 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=694, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=753, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=749, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1562, PETRI_PLACES=698, PETRI_TRANSITIONS=753} [2022-11-02 20:37:05,027 INFO L287 CegarLoopForPetriNet]: 697 programPoint places, 1 predicate places. [2022-11-02 20:37:05,027 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 753 transitions, 1562 flow [2022-11-02 20:37:05,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 720.8) internal successors, (3604), 5 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:05,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:37:05,031 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:05,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:37:05,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:37:05,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:05,032 INFO L85 PathProgramCache]: Analyzing trace with hash -409247448, now seen corresponding path program 1 times [2022-11-02 20:37:05,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:05,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255844597] [2022-11-02 20:37:05,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:05,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:05,127 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-02 20:37:05,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:05,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255844597] [2022-11-02 20:37:05,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255844597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:05,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:37:05,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:37:05,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598321720] [2022-11-02 20:37:05,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:05,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:37:05,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:05,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:37:05,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:37:05,137 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 729 out of 774 [2022-11-02 20:37:05,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 753 transitions, 1562 flow. Second operand has 3 states, 3 states have (on average 731.3333333333334) internal successors, (2194), 3 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:05,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:37:05,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 729 of 774 [2022-11-02 20:37:05,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:37:06,789 INFO L130 PetriNetUnfolder]: 312/3454 cut-off events. [2022-11-02 20:37:06,789 INFO L131 PetriNetUnfolder]: For 224/245 co-relation queries the response was YES. [2022-11-02 20:37:06,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3652 conditions, 3454 events. 312/3454 cut-off events. For 224/245 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 28714 event pairs, 1 based on Foata normal form. 0/3149 useless extension candidates. Maximal degree in co-relation 3540. Up to 79 conditions per place. [2022-11-02 20:37:06,933 INFO L137 encePairwiseOnDemand]: 770/774 looper letters, 19 selfloop transitions, 1 changer transitions 0/747 dead transitions. [2022-11-02 20:37:06,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 697 places, 747 transitions, 1590 flow [2022-11-02 20:37:06,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:37:06,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:37:06,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2210 transitions. [2022-11-02 20:37:06,939 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9517657192075797 [2022-11-02 20:37:06,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2210 transitions. [2022-11-02 20:37:06,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2210 transitions. [2022-11-02 20:37:06,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:37:06,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2210 transitions. [2022-11-02 20:37:06,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 736.6666666666666) internal successors, (2210), 3 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:06,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 774.0) internal successors, (3096), 4 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:06,953 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 774.0) internal successors, (3096), 4 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:06,954 INFO L175 Difference]: Start difference. First operand has 698 places, 753 transitions, 1562 flow. Second operand 3 states and 2210 transitions. [2022-11-02 20:37:06,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 697 places, 747 transitions, 1590 flow [2022-11-02 20:37:06,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 693 places, 747 transitions, 1582 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:37:06,968 INFO L231 Difference]: Finished difference. Result has 693 places, 747 transitions, 1544 flow [2022-11-02 20:37:06,970 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=691, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=746, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1544, PETRI_PLACES=693, PETRI_TRANSITIONS=747} [2022-11-02 20:37:06,971 INFO L287 CegarLoopForPetriNet]: 697 programPoint places, -4 predicate places. [2022-11-02 20:37:06,971 INFO L495 AbstractCegarLoop]: Abstraction has has 693 places, 747 transitions, 1544 flow [2022-11-02 20:37:06,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 731.3333333333334) internal successors, (2194), 3 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:06,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:37:06,973 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:06,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:37:06,974 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:37:06,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:06,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1207477274, now seen corresponding path program 1 times [2022-11-02 20:37:06,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:06,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39897641] [2022-11-02 20:37:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:06,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:07,197 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-02 20:37:07,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:07,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39897641] [2022-11-02 20:37:07,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39897641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:07,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:37:07,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:37:07,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139640590] [2022-11-02 20:37:07,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:07,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:37:07,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:07,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:37:07,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:37:07,205 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 679 out of 774 [2022-11-02 20:37:07,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 693 places, 747 transitions, 1544 flow. Second operand has 5 states, 5 states have (on average 683.0) internal successors, (3415), 5 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:07,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:37:07,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 679 of 774 [2022-11-02 20:37:07,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand