./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 dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f60a29e-ba65-47fd-aedc-710a74ddc875/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f60a29e-ba65-47fd-aedc-710a74ddc875/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f60a29e-ba65-47fd-aedc-710a74ddc875/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f60a29e-ba65-47fd-aedc-710a74ddc875/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/bounded_buffer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f60a29e-ba65-47fd-aedc-710a74ddc875/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f60a29e-ba65-47fd-aedc-710a74ddc875/bin/uautomizer-J5u9QxTXDZ --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-dbf71c6-m [2022-10-17 10:25:03,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:25:03,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:25:03,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:25:03,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:25:03,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:25:03,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:25:03,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:25:03,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:25:03,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:25:03,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:25:03,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:25:03,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:25:03,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:25:03,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:25:03,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:25:03,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:25:03,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:25:03,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:25:03,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:25:03,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:25:03,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:25:03,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:25:03,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:25:03,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:25:03,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:25:03,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:25:03,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:25:03,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:25:03,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:25:03,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:25:03,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:25:03,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:25:03,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:25:03,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:25:03,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:25:03,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:25:03,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:25:03,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:25:03,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:25:03,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:25:03,451 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f60a29e-ba65-47fd-aedc-710a74ddc875/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:25:03,485 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:25:03,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:25:03,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:25:03,485 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:25:03,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:25:03,486 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:25:03,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:25:03,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:25:03,488 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:25:03,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:25:03,488 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:25:03,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:25:03,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:25:03,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:25:03,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:25:03,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:25:03,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:25:03,490 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:25:03,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:25:03,490 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:25:03,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:25:03,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:25:03,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:25:03,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:25:03,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:25:03,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:25:03,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:25:03,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:25:03,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:25:03,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:25:03,493 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:25:03,493 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:25:03,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:25:03,493 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_9f60a29e-ba65-47fd-aedc-710a74ddc875/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f60a29e-ba65-47fd-aedc-710a74ddc875/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 [2022-10-17 10:25:03,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:25:03,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:25:03,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:25:03,777 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:25:03,778 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:25:03,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f60a29e-ba65-47fd-aedc-710a74ddc875/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-complex/bounded_buffer.i [2022-10-17 10:25:03,849 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f60a29e-ba65-47fd-aedc-710a74ddc875/bin/uautomizer-J5u9QxTXDZ/data/38c989b0c/f22e5cfbfb3c423a8f43d8cb4eefd394/FLAGd16e3a5e1 [2022-10-17 10:25:04,520 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:25:04,522 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f60a29e-ba65-47fd-aedc-710a74ddc875/sv-benchmarks/c/pthread-complex/bounded_buffer.i [2022-10-17 10:25:04,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f60a29e-ba65-47fd-aedc-710a74ddc875/bin/uautomizer-J5u9QxTXDZ/data/38c989b0c/f22e5cfbfb3c423a8f43d8cb4eefd394/FLAGd16e3a5e1 [2022-10-17 10:25:04,706 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f60a29e-ba65-47fd-aedc-710a74ddc875/bin/uautomizer-J5u9QxTXDZ/data/38c989b0c/f22e5cfbfb3c423a8f43d8cb4eefd394 [2022-10-17 10:25:04,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:25:04,710 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:25:04,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:25:04,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:25:04,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:25:04,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:25:04" (1/1) ... [2022-10-17 10:25:04,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d83177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:04, skipping insertion in model container [2022-10-17 10:25:04,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:25:04" (1/1) ... [2022-10-17 10:25:04,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:25:04,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:25:05,497 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_9f60a29e-ba65-47fd-aedc-710a74ddc875/sv-benchmarks/c/pthread-complex/bounded_buffer.i[70002,70015] [2022-10-17 10:25:05,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:25:05,543 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:25:05,599 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_9f60a29e-ba65-47fd-aedc-710a74ddc875/sv-benchmarks/c/pthread-complex/bounded_buffer.i[70002,70015] [2022-10-17 10:25:05,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:25:05,765 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:25:05,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:05 WrapperNode [2022-10-17 10:25:05,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:25:05,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:25:05,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:25:05,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:25:05,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:05" (1/1) ... [2022-10-17 10:25:05,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:05" (1/1) ... [2022-10-17 10:25:05,907 INFO L138 Inliner]: procedures = 428, calls = 126, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 478 [2022-10-17 10:25:05,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:25:05,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:25:05,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:25:05,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:25:05,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:05" (1/1) ... [2022-10-17 10:25:05,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:05" (1/1) ... [2022-10-17 10:25:05,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:05" (1/1) ... [2022-10-17 10:25:05,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:05" (1/1) ... [2022-10-17 10:25:05,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:05" (1/1) ... [2022-10-17 10:25:05,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:05" (1/1) ... [2022-10-17 10:25:05,972 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:05" (1/1) ... [2022-10-17 10:25:05,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:05" (1/1) ... [2022-10-17 10:25:05,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:25:05,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:25:05,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:25:05,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:25:05,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:05" (1/1) ... [2022-10-17 10:25:06,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:25:06,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f60a29e-ba65-47fd-aedc-710a74ddc875/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:25:06,051 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f60a29e-ba65-47fd-aedc-710a74ddc875/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:25:06,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f60a29e-ba65-47fd-aedc-710a74ddc875/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:25:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2022-10-17 10:25:06,092 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2022-10-17 10:25:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:25:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:25:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-10-17 10:25:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:25:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2022-10-17 10:25:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:25:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:25:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:25:06,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:25:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:25:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:25:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2022-10-17 10:25:06,093 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2022-10-17 10:25:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:25:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:25:06,095 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:25:06,357 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:25:06,359 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:25:07,091 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:25:07,112 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:25:07,112 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-10-17 10:25:07,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:25:07 BoogieIcfgContainer [2022-10-17 10:25:07,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:25:07,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:25:07,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:25:07,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:25:07,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:25:04" (1/3) ... [2022-10-17 10:25:07,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fe8e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:25:07, skipping insertion in model container [2022-10-17 10:25:07,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:05" (2/3) ... [2022-10-17 10:25:07,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fe8e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:25:07, skipping insertion in model container [2022-10-17 10:25:07,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:25:07" (3/3) ... [2022-10-17 10:25:07,135 INFO L112 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2022-10-17 10:25:07,181 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:25:07,195 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:25:07,195 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:25:07,195 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:25:07,394 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-10-17 10:25:07,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 455 places, 504 transitions, 1030 flow [2022-10-17 10:25:07,914 INFO L130 PetriNetUnfolder]: 122/1098 cut-off events. [2022-10-17 10:25:07,914 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-10-17 10:25:07,948 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. [2022-10-17 10:25:07,948 INFO L82 GeneralOperation]: Start removeDead. Operand has 455 places, 504 transitions, 1030 flow [2022-10-17 10:25:07,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 455 places, 504 transitions, 1030 flow [2022-10-17 10:25:07,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:25:08,002 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;@27f2d9e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:25:08,003 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 10:25:08,032 INFO L130 PetriNetUnfolder]: 19/190 cut-off events. [2022-10-17 10:25:08,032 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-10-17 10:25:08,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:25:08,034 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] [2022-10-17 10:25:08,035 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)] === [2022-10-17 10:25:08,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:08,042 INFO L85 PathProgramCache]: Analyzing trace with hash 13293357, now seen corresponding path program 1 times [2022-10-17 10:25:08,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:08,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231122480] [2022-10-17 10:25:08,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:08,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:08,699 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 10:25:08,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:08,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231122480] [2022-10-17 10:25:08,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231122480] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:08,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:08,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:25:08,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56245915] [2022-10-17 10:25:08,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:08,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:25:08,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:08,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:25:08,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:25:08,750 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 461 out of 504 [2022-10-17 10:25:08,762 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) [2022-10-17 10:25:08,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:25:08,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 461 of 504 [2022-10-17 10:25:08,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:25:09,190 INFO L130 PetriNetUnfolder]: 87/1060 cut-off events. [2022-10-17 10:25:09,190 INFO L131 PetriNetUnfolder]: For 33/49 co-relation queries the response was YES. [2022-10-17 10:25:09,215 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. [2022-10-17 10:25:09,225 INFO L137 encePairwiseOnDemand]: 487/504 looper letters, 25 selfloop transitions, 4 changer transitions 0/489 dead transitions. [2022-10-17 10:25:09,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 489 transitions, 1058 flow [2022-10-17 10:25:09,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:25:09,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 10:25:09,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2352 transitions. [2022-10-17 10:25:09,255 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-10-17 10:25:09,256 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2352 transitions. [2022-10-17 10:25:09,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2352 transitions. [2022-10-17 10:25:09,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:25:09,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2352 transitions. [2022-10-17 10:25:09,277 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) [2022-10-17 10:25:09,292 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) [2022-10-17 10:25:09,295 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) [2022-10-17 10:25:09,297 INFO L175 Difference]: Start difference. First operand has 455 places, 504 transitions, 1030 flow. Second operand 5 states and 2352 transitions. [2022-10-17 10:25:09,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 489 transitions, 1058 flow [2022-10-17 10:25:09,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 489 transitions, 1058 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:25:09,351 INFO L231 Difference]: Finished difference. Result has 457 places, 489 transitions, 1008 flow [2022-10-17 10:25:09,354 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} [2022-10-17 10:25:09,358 INFO L287 CegarLoopForPetriNet]: 455 programPoint places, 2 predicate places. [2022-10-17 10:25:09,359 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 489 transitions, 1008 flow [2022-10-17 10:25:09,361 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) [2022-10-17 10:25:09,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:25:09,362 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] [2022-10-17 10:25:09,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:25:09,362 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)] === [2022-10-17 10:25:09,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:09,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1703216025, now seen corresponding path program 1 times [2022-10-17 10:25:09,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:09,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676111296] [2022-10-17 10:25:09,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:09,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:09,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 10:25:09,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:09,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676111296] [2022-10-17 10:25:09,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676111296] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:09,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:09,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:25:09,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740633050] [2022-10-17 10:25:09,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:09,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:25:09,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:09,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:25:09,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:25:09,452 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 471 out of 504 [2022-10-17 10:25:09,459 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) [2022-10-17 10:25:09,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:25:09,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 471 of 504 [2022-10-17 10:25:09,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:25:09,869 INFO L130 PetriNetUnfolder]: 84/1054 cut-off events. [2022-10-17 10:25:09,869 INFO L131 PetriNetUnfolder]: For 33/37 co-relation queries the response was YES. [2022-10-17 10:25:09,891 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. [2022-10-17 10:25:09,899 INFO L137 encePairwiseOnDemand]: 500/504 looper letters, 13 selfloop transitions, 1 changer transitions 0/483 dead transitions. [2022-10-17 10:25:09,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 483 transitions, 1024 flow [2022-10-17 10:25:09,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:25:09,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:25:09,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1430 transitions. [2022-10-17 10:25:09,904 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9457671957671958 [2022-10-17 10:25:09,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1430 transitions. [2022-10-17 10:25:09,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1430 transitions. [2022-10-17 10:25:09,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:25:09,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1430 transitions. [2022-10-17 10:25:09,910 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) [2022-10-17 10:25:09,915 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) [2022-10-17 10:25:09,917 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) [2022-10-17 10:25:09,917 INFO L175 Difference]: Start difference. First operand has 457 places, 489 transitions, 1008 flow. Second operand 3 states and 1430 transitions. [2022-10-17 10:25:09,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 483 transitions, 1024 flow [2022-10-17 10:25:09,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 483 transitions, 1016 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:25:09,930 INFO L231 Difference]: Finished difference. Result has 452 places, 483 transitions, 990 flow [2022-10-17 10:25:09,931 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} [2022-10-17 10:25:09,932 INFO L287 CegarLoopForPetriNet]: 455 programPoint places, -3 predicate places. [2022-10-17 10:25:09,932 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 483 transitions, 990 flow [2022-10-17 10:25:09,934 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) [2022-10-17 10:25:09,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:25:09,934 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] [2022-10-17 10:25:09,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:25:09,935 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)] === [2022-10-17 10:25:09,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:09,935 INFO L85 PathProgramCache]: Analyzing trace with hash 688471773, now seen corresponding path program 1 times [2022-10-17 10:25:09,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:09,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084081218] [2022-10-17 10:25:09,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:09,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 10:25:10,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:10,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084081218] [2022-10-17 10:25:10,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084081218] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:10,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:10,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:25:10,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414235134] [2022-10-17 10:25:10,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:10,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:25:10,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:10,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:25:10,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:25:10,259 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 504 [2022-10-17 10:25:10,263 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) [2022-10-17 10:25:10,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:25:10,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 504 [2022-10-17 10:25:10,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:25:14,400 INFO L130 PetriNetUnfolder]: 2919/15709 cut-off events. [2022-10-17 10:25:14,400 INFO L131 PetriNetUnfolder]: For 140/228 co-relation queries the response was YES. [2022-10-17 10:25:14,566 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. [2022-10-17 10:25:14,725 INFO L137 encePairwiseOnDemand]: 496/504 looper letters, 49 selfloop transitions, 6 changer transitions 1/483 dead transitions. [2022-10-17 10:25:14,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 483 transitions, 1102 flow [2022-10-17 10:25:14,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:25:14,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 10:25:14,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2232 transitions. [2022-10-17 10:25:14,733 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8857142857142857 [2022-10-17 10:25:14,733 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2232 transitions. [2022-10-17 10:25:14,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2232 transitions. [2022-10-17 10:25:14,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:25:14,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2232 transitions. [2022-10-17 10:25:14,742 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) [2022-10-17 10:25:14,750 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) [2022-10-17 10:25:14,752 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) [2022-10-17 10:25:14,753 INFO L175 Difference]: Start difference. First operand has 452 places, 483 transitions, 990 flow. Second operand 5 states and 2232 transitions. [2022-10-17 10:25:14,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 483 transitions, 1102 flow [2022-10-17 10:25:14,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 483 transitions, 1101 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:25:14,766 INFO L231 Difference]: Finished difference. Result has 454 places, 482 transitions, 1010 flow [2022-10-17 10:25:14,767 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} [2022-10-17 10:25:14,768 INFO L287 CegarLoopForPetriNet]: 455 programPoint places, -1 predicate places. [2022-10-17 10:25:14,768 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 482 transitions, 1010 flow [2022-10-17 10:25:14,770 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) [2022-10-17 10:25:14,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:25:14,771 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] [2022-10-17 10:25:14,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:25:14,772 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)] === [2022-10-17 10:25:14,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:14,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1704620567, now seen corresponding path program 1 times [2022-10-17 10:25:14,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:14,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280456871] [2022-10-17 10:25:14,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:14,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:25:14,849 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:25:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:25:14,927 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:25:14,927 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:25:14,928 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-10-17 10:25:14,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-10-17 10:25:14,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-10-17 10:25:14,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-10-17 10:25:14,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:25:14,932 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-10-17 10:25:14,934 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 10:25:14,935 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-10-17 10:25:15,090 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-10-17 10:25:15,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 697 places, 774 transitions, 1596 flow [2022-10-17 10:25:16,633 INFO L130 PetriNetUnfolder]: 430/3582 cut-off events. [2022-10-17 10:25:16,633 INFO L131 PetriNetUnfolder]: For 72/84 co-relation queries the response was YES. [2022-10-17 10:25:16,744 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. [2022-10-17 10:25:16,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 697 places, 774 transitions, 1596 flow [2022-10-17 10:25:16,793 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 697 places, 774 transitions, 1596 flow [2022-10-17 10:25:16,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:25:16,796 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;@27f2d9e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:25:16,796 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-10-17 10:25:16,836 INFO L130 PetriNetUnfolder]: 39/416 cut-off events. [2022-10-17 10:25:16,837 INFO L131 PetriNetUnfolder]: For 11/13 co-relation queries the response was YES. [2022-10-17 10:25:16,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:25:16,837 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] [2022-10-17 10:25:16,838 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)] === [2022-10-17 10:25:16,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:16,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1094861806, now seen corresponding path program 1 times [2022-10-17 10:25:16,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:16,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520179603] [2022-10-17 10:25:16,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:16,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:16,977 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-17 10:25:16,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:16,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520179603] [2022-10-17 10:25:16,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520179603] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:16,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:16,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:25:16,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025992963] [2022-10-17 10:25:16,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:16,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:25:16,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:16,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:25:16,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:25:16,987 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 719 out of 774 [2022-10-17 10:25:16,992 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) [2022-10-17 10:25:16,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:25:16,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 719 of 774 [2022-10-17 10:25:16,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:25:18,681 INFO L130 PetriNetUnfolder]: 315/3460 cut-off events. [2022-10-17 10:25:18,682 INFO L131 PetriNetUnfolder]: For 230/287 co-relation queries the response was YES. [2022-10-17 10:25:18,777 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. [2022-10-17 10:25:18,808 INFO L137 encePairwiseOnDemand]: 752/774 looper letters, 31 selfloop transitions, 4 changer transitions 0/753 dead transitions. [2022-10-17 10:25:18,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 753 transitions, 1624 flow [2022-10-17 10:25:18,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:25:18,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 10:25:18,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3658 transitions. [2022-10-17 10:25:18,820 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.945219638242894 [2022-10-17 10:25:18,820 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3658 transitions. [2022-10-17 10:25:18,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3658 transitions. [2022-10-17 10:25:18,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:25:18,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3658 transitions. [2022-10-17 10:25:18,835 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) [2022-10-17 10:25:18,846 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) [2022-10-17 10:25:18,850 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) [2022-10-17 10:25:18,850 INFO L175 Difference]: Start difference. First operand has 697 places, 774 transitions, 1596 flow. Second operand 5 states and 3658 transitions. [2022-10-17 10:25:18,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 698 places, 753 transitions, 1624 flow [2022-10-17 10:25:18,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 698 places, 753 transitions, 1624 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:25:18,868 INFO L231 Difference]: Finished difference. Result has 698 places, 753 transitions, 1562 flow [2022-10-17 10:25:18,869 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} [2022-10-17 10:25:18,870 INFO L287 CegarLoopForPetriNet]: 697 programPoint places, 1 predicate places. [2022-10-17 10:25:18,871 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 753 transitions, 1562 flow [2022-10-17 10:25:18,874 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) [2022-10-17 10:25:18,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:25:18,874 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] [2022-10-17 10:25:18,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:25:18,875 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)] === [2022-10-17 10:25:18,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:18,875 INFO L85 PathProgramCache]: Analyzing trace with hash -409247448, now seen corresponding path program 1 times [2022-10-17 10:25:18,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:18,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041450769] [2022-10-17 10:25:18,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:18,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:18,936 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-17 10:25:18,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:18,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041450769] [2022-10-17 10:25:18,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041450769] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:18,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:18,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:25:18,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211969643] [2022-10-17 10:25:18,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:18,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:25:18,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:18,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:25:18,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:25:18,942 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 729 out of 774 [2022-10-17 10:25:18,946 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) [2022-10-17 10:25:18,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:25:18,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 729 of 774 [2022-10-17 10:25:18,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:25:20,690 INFO L130 PetriNetUnfolder]: 312/3454 cut-off events. [2022-10-17 10:25:20,691 INFO L131 PetriNetUnfolder]: For 224/245 co-relation queries the response was YES. [2022-10-17 10:25:20,825 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. [2022-10-17 10:25:20,846 INFO L137 encePairwiseOnDemand]: 770/774 looper letters, 19 selfloop transitions, 1 changer transitions 0/747 dead transitions. [2022-10-17 10:25:20,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 697 places, 747 transitions, 1590 flow [2022-10-17 10:25:20,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:25:20,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:25:20,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2210 transitions. [2022-10-17 10:25:20,854 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9517657192075797 [2022-10-17 10:25:20,854 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2210 transitions. [2022-10-17 10:25:20,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2210 transitions. [2022-10-17 10:25:20,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:25:20,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2210 transitions. [2022-10-17 10:25:20,864 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) [2022-10-17 10:25:20,870 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) [2022-10-17 10:25:20,872 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) [2022-10-17 10:25:20,872 INFO L175 Difference]: Start difference. First operand has 698 places, 753 transitions, 1562 flow. Second operand 3 states and 2210 transitions. [2022-10-17 10:25:20,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 697 places, 747 transitions, 1590 flow [2022-10-17 10:25:20,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 693 places, 747 transitions, 1582 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:25:20,890 INFO L231 Difference]: Finished difference. Result has 693 places, 747 transitions, 1544 flow [2022-10-17 10:25:20,891 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} [2022-10-17 10:25:20,892 INFO L287 CegarLoopForPetriNet]: 697 programPoint places, -4 predicate places. [2022-10-17 10:25:20,893 INFO L495 AbstractCegarLoop]: Abstraction has has 693 places, 747 transitions, 1544 flow [2022-10-17 10:25:20,894 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) [2022-10-17 10:25:20,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:25:20,895 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] [2022-10-17 10:25:20,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:25:20,895 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)] === [2022-10-17 10:25:20,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:20,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1207477274, now seen corresponding path program 1 times [2022-10-17 10:25:20,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:20,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771240870] [2022-10-17 10:25:20,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:20,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:21,107 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-17 10:25:21,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:21,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771240870] [2022-10-17 10:25:21,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771240870] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:21,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:21,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:25:21,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457303178] [2022-10-17 10:25:21,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:21,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:25:21,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:21,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:25:21,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:25:21,114 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 679 out of 774 [2022-10-17 10:25:21,119 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) [2022-10-17 10:25:21,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:25:21,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 679 of 774 [2022-10-17 10:25:21,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand